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GMC 2015 Duramax LML V8 6.6L - DIC message SERVICE EXHAUST

FLUID SYSTEM - SEE OWNERS...
GMC 2015 Duramax LML V8 6.6L - DIC message SERVICE EXHAUST FLUID SYSTEM - SEE OWNERS MANUAL NOW -TRANSITIONING TO 7 KM/H(4 MPH) MAX SPEED displays. A flashing warning light and a chime also come on. Vehicle speed reduced to 4 MPH MAX SPEED. Truck won't move pass 10 Mph. I've added approx. 3.5 gallons of DEF and let the car ran for over 1 hour. DEF warning indicator still showing on DIC. My understanding is that it's supposed to reset itself. Fyi - the closet GMC service center is over*****from us.Further, using a Tech2 tool we've initiated the Diesel Regen. Diesel Regen seems to be running as normal based on the engine revving sounds and smoke coming out the tail pipe until 10 minutes passed then Diesel Regen and engine operation abruptly returned to normal state. Upon examining the Tech2 there is an error that says Diesel Particulate Filter Temperature Out of Range (Press [Exit to continue]. Issue still persists. Any thoughts what the solution could be?
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Answered in 13 minutes by:
3/23/2017
eric remington
Category: GMC
Satisfied Customers: 296
Experience: mechanic/service advisor at topline auto
Verified

ANY TROUBLE CODES

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Customer reply replied 8 months ago
P2510 - Engine controls ignition relay feedback circuit. Car will start but will not shut off unless you pull the ignition relay.

ok give me some time to research

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Customer reply replied 8 months ago
Do you have any updates?

tsb

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anoehr

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Customer reply replied 8 months ago
Thanks for the updates but the issue with the truck not switching off was resolved by replacing the ignition relay with a new one. We now have new codes that could possibly address the underlying issue. They are P0103 - Mass or volume air flow circuit high input. Module: Fuel and air metering.And P0098 - Intake air temperature sensor 2 circuit high input. Module: fuel and air metering and auxiliary emission controls.We are in the process of checking the air filter and sensors. Do you have any advice on how to monitor the intake air flow with the Tech2 and at what range we should look for to determine if the sensors are good or bad?

let me look up these codes and see

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the intake air sensor is integrated into mass air sensor

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DTC P0097 OR P0098 (ENGINE CONTROLS AND FUEL - 6.6L (L5P LGH LML))Document ID#(###) ###-####/p>

DTC P0097 OR P0098 (ENGINE CONTROLS AND FUEL - 6.6L (L5P LGH LML))

Diagnostic Instructions

DTC Descriptors

DTC P0097 : Intake Air Temperature (IAT) Sensor 2 Circuit Low Voltage

DTC P0098 : Intake Air Temperature (IAT) Sensor 2 Circuit High Voltage

Diagnostic Fault Information

IAT Sensor 2

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Signal

P0097

P0098

P0098*

P0098, P0101, P2199

Low Reference

P2199

*Internal ECM or sensor damage may occur if the circuit is shorted to B+.

Typical Scan Tool Data

IAT Sensor 2

Circuit

Short to Ground

Open

Short to Voltage

Operating Conditions: Ignition ON or Engine Running

Parameter Normal Range: −39 to +148°C (−38 to +298°F)

Signal

150°C (302°F)

−40°C (−40°F)

−40°C (−40°F)*

Low Reference

*Internal ECM or sensor damage may occur if the circuit is shorted to B+

Circuit/System Description

The intake air temperature (IAT) sensor 2 is a variable resistor that measures the temperature of the air in the mass air flow (MAF) sensor assembly. The IAT 2 is integrated into the mass air flow sensor assembly. It is the second air temperature sensor in the air stream. The engine control module (ECM) supplies 5 V to the signal circuit, and a ground for the low reference circuit. The ECM monitors the IAT sensor 2 signal for an excessively high or low voltage.

Conditions for Running the DTC

P0097 or P0098

  • The engine is running for longer than 10 s.
  • The DTCs run continuously when the above condition is met.

Conditions for Setting the DTC

P0097

The IAT Sensor 2 parameter is warmer than 148°C (299°F) for greater than 3 s. This is equal to or less than 0.08 V on the IAT signal circuit as measured by the ECM.

Note: The scan tool display range is between −40 and +150°C (−40 and +302°F).

P0098

The IAT Sensor 2 parameter is colder than −52°C (−61°F) for greater than 3 s. This is equal to greater than 4.9 V on the IAT signal circuit as measured by the ECM.

Action Taken When the DTC Sets

  • DTCs P0097 and P0098 are Type B DTCs.
  • The ECM commands reduced engine power.
  • The driver information center (DIC) or indicator may display reduced engine power.

Conditions for Clearing the DTC

DTCs P0097 and P0098 are Type B DTCs.

Diagnostic Aids

  • The (8 Pin) Humidity Sensor is placed in the air stream ahead of the (5 Pin) Mass Air Flow/Intake Air Temperature (IAT sensor 2). They are both mounted to the air cleaner cover.
  • With the ignition ON and the engine OFF, if the engine is cold, a properly functioning IAT sensor 2 will gradually increase the scan tool IAT Sensor 2 parameter. This is due to the heat that is generated by the MAF sensor heating elements.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

Powertrain Component Views

Powertrain Component Views

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Note:

  • To minimize the effects of residual engine heat and sensor internal heating elements, perform Steps 1 and 2 of this verification procedure only if the ignition has been OFF for 8 hours or more.
  • The vehicle sitting in direct sun light or having the block heater ON will skew the results.

 

  1. Ignition ON.
  2. Verify the following scan tool parameters are within 15°C (27°F) of each other.
    • IAT Sensor 1 and 2
    • Start-Up ECT Sensor
    • Ambient Air Temp. Sensor
    • If not within 15°C (27°F)

      Refer to Circuit System Testing.

    • If within 15°C (27°F)
  3. Engine idling.
  4. Verify the IAT Sensor 2 parameter is between −39 to +148°C (−38 to +298°F).
    • If not between −39 to +148°C (−38 to +298°F)

      Refer to Circuit System Testing..

    • If between −39 to +148°C (−38 to +298°F)
  5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  6. Verify the DTC does not set.
    • If the DTC sets

      Refer to Circuit/System Testing.

    • If the DTC does not set
  7. All OK.

Circuit/System Testing

Note:

  • You must perform the Circuit/System Verification before proceeding with the Circuit/System Testing.
  • You must perform the Diagnostic Repair Verification after completing the Circuit/System Testing.

 

  1. Ignition OFF, disconnect the harness connector at the (5 Pin) B75B Mass Air Flow/Intake Air Temperature sensor (IAT sensor 2).
  2. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 2 Ω between the Intake Air Temperature sensor 2 low reference circuit terminal A and ground.
    • If 2 Ω or greater

    2.1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.

    2.2. Test for less than 2 Ω in the low reference circuit end to end.

      • If 2 Ω or greater, repair the open or high resistance in the circuit.
      • If less than 2 Ω replace the K20 Engine Control Module.
    • If less than 2 Ω
  3. Ignition ON, test for 4.8–5.2 V between the intake air temperature sensor 2 signal circuit terminal B and ground.
    • If less than 4.8 V

    3.1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.

    3.2. Test for infinite resistance between the signal circuit and ground.

    3.3. Test for less than 2 Ω in the signal circuit end to end.

      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K20 Engine Control Module.
    • If greater than 5.2 V

    Note: If the signal circuit is shorted to a voltage the engine control module or the sensor may be damaged.

    3.1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.

    3.2. Test for less than 1 V between the signal circuit and ground.

      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K20 Engine Control Module.
      • If between 4.8–5.2 V
    • Test or replace the (5 Pin) B75B Mass Air Flow/Intake Air Temperature sensor (IAT sensor 2).

    Component Testing

    Mass Air Flow/Intake Air Temperature Sensor

    Note: A thermometer can be used to test the sensor off the vehicle.

    1. Ignition OFF, disconnect the harness connector at the (5 Pin) B75B Mass Air Flow/Intake Air Temperature sensor.
    2. Test the IAT sensor 2 by varying the sensor temperature while monitoring the sensor resistance. Compare the values to the Temperature Vs Resistance table. Refer to Temperature Versus Resistance (Fuel Temperature Sensor) , Temperature Versus Resistance (IAT Sensor 2) , Temperature Versus Resistance (EGT Sensors) , Temperature Versus Resistance (EGR Temperature Sensors) , Temperature Versus Resistance (Emission Reduction Fluid Injector) , Temperature Versus Resistance (Engine Coolant Temperature Sensor) , or Temperature Versus Resistance (Reductant Temperature Sensor) for IAT sensor 2 table. Verify the resistances are within 5 % of the table specifications.
      • If not within 5 % of the specifications, replace the B75B Mass Air Flow/Intake Air Temperature sensor.

    Repair Instructions

    Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    Portions of materials contained herein are sourced from General Motors Inc., Co.

    Copyright 2007 - 2015 Service Repair Solutions, Inc.

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    MASS AIRFLOW SENSOR WITH INTAKE AIR TEMPERATURE SENSOR REPLACEMENT (ENGINE CONTROLS AND FUEL - 6.6L (L5P LGH LML))Document ID#(###) ###-####/p>

    MASS AIRFLOW SENSOR WITH INTAKE AIR TEMPERATURE SENSOR REPLACEMENT (ENGINE CONTROLS AND FUEL - 6.6L (L5P LGH LML))

    Callout

    Component Name

    1

    Mass Airflow Sensor with Intake Air Temperature Sensor Fasteners (Qty: 2)

    Caution: Refer to Fastener Caution .

    Procedure

    Disconnect the harness connector from the sensor.

    Tighten :

    1.5 N•m (13 lb in)

    2

    Mass Airflow Sensor with Intake Air Temperature Sensor

    Procedure

    Disconnect the electrical connector.

    If the scan tool DPF Soot Mass is less than 30 grams, enable the DPF. Refer to Diesel Particulate Filter (DPF) Regeneration Enable .

    If the scan tool DPF Soot Mass is 30 grams or greater. Refer to Diesel Particulate Filter (DPF) Service Regeneration .

    Portions of materials contained herein are sourced from General Motors Inc., Co.

    Copyright 2007 - 2015 Service Repair Solutions, Inc.

    Print Image

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    DTC P0102 OR P0103 (ENGINE CONTROLS AND FUEL - 6.6L (L5P LGH LML))Document ID#(###) ###-####/p>

    DTC P0102 OR P0103 (ENGINE CONTROLS AND FUEL - 6.6L (L5P LGH LML))

    Diagnostic Instructions

    DTC Descriptors

    DTC P0102 : Mass Air Flow (MAF) Sensor Circuit Low Frequency

    DTC P0103 : Mass Air Flow (MAF) Sensor Circuit High Frequency

    Diagnostic Fault Information

    Circuit

    Short to Ground

    Open/High Resistance

    Short to Voltage

    Signal Performance

    Ignition Voltage

    P0103

    P0103

    P103

    P0103

    Signal

    P0103

    P0103

    P0103

    P0103

    Typical Scan Tool Data

    MAF Sensor

    Circuit

    Short to Ground

    Open

    Short to Voltage

    Operating Conditions: Engine running at idle, engine coolant temperature (ECT) sensor warmer than 60°C (140°F)

    Parameter Normal Range: 10–40 g/s

    Operating Conditions: Engine running at idle, ECT sensor colder than 60°C (140°F)

    Parameter Normal Range: 30–40 g/s

    Ignition Voltage

    0.0 g/s

    0.0 g/s

    Signal

    0.0 g/s

    0.0 g/s

    0.0 g/s

    Low Reference

    Circuit/System Description

    The mass air flow (MAF) sensor is integrated with the intake air temperature (IAT) sensor 2. The MAF sensor is an air flow meter that measures the amount of air entering the engine. The engine control module (ECM) uses the MAF sensor signal to provide the correct fuel delivery for all engine speeds and loads. A small quantity of air entering the engine indicates a deceleration or idle condition. A large quantity of air entering the engine indicates an acceleration or high load condition.

    The ECM monitors the exhaust gas recirculation (EGR) flow when the EGR valve is commanded ON. The ECM compares the desired MAF to the actual MAF, if the difference is less than or greater than a calibrated threshold level the amount of detected EGR flow is out of range and an EGR DTC will set.

    The ECM applies 5 V to the MAF sensor on the MAF sensor signal circuit. The sensor uses the voltage to produce a frequency based on the inlet airflow through the sensor bore. The frequency varies in a range of approximately 2,300 Hz at idle to near 9,000 Hz at maximum engine load, depending on engine coolant temperature (ECT).

    When the ECT reaches 60°C (140°F) the ECM can command the exhaust gas recirculation (EGR) valve ON, and a lower frequency and g/s value will be indicated on the scan tool.

    Conditions for Running the DTC

    P0102

    • DTCs P0335 or P0336 are not set.
    • The engine is running for longer than 10 s.
    • This DTC runs continuously when the enabling conditions are met.

    P0103

    • DTCs P0335 or P0336 are not set.
    • The ignition is ON.
    • This DTC runs continuously when the enabling conditions are met.

    Conditions for Setting the DTC

    P0102

    The ECM detects that the MAF sensor is less than 1.08 g/s for greater than 3 s.

    P0103

    The ignition is ON, and the ECM detects a fault on the MAF sensor circuits.

    OR

    The engine is running, and the ECM detects that the MAF sensor signal is greater than 625 g/s, for greater than 3 s.

    Action Taken When the DTC Sets

    • DTCs P0102 and P0103 are Type A DTCs.
    • The ECM commands reduced engine power.
    • The driver information center (DIC) or indicator may display reduced engine power.
    • Diesel particulate filter (DPF) regeneration is inhibited.

    Conditions for Clearing the DTC

    DTCs P0102 and P0103 are Type A DTCs.

    Diagnostic Aids

    • A wide open throttle (WOT) acceleration from a stop should cause the MAF Sensor parameter on the scan tool to increase rapidly. This increase should be from 6–8 g/s at idle to greater than 380 g/s at the time of the 1-2 shift.
    • For an intermittent problem, visually and physically inspect the EGR valve for a possible binding or sticking in the open position.
    • Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories .
    • A faulty EGR valve that does not close or open fully, may set this DTC.

    Reference Information

    Schematic Reference

    Engine Controls Schematics

    Connector End View Reference

    Component Connector End Views

    Electrical Information Reference

    Powertrain Component Views

    Powertrain Component Views

    DTC Type Reference

    Powertrain Diagnostic Trouble Code (DTC) Type Definitions

    Scan Tool Reference

    Control Module References for scan tool information

    Special Tools

    Circuit/System Verification

    1. Ignition ON.
    2. Verify that DTCs P0106, P0403, or P046C are not set.
      • If no DTC sets.
    3. Verify the scan tool MAF Sensor parameter is between 10–40 g/s, depending on the ECT temperature and EGR position.
      • If not between 10–40 g/s

        Refer to Circuit/System Testing.

      • If between 10–40 g/s
    4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
    5. Verify the DTC does not set.
      • If the DTC sets

        Refer to Circuit/System Testing.

      • If the DTC does not set
    6. All OK.

    Circuit/System Testing

    Note:

    • You must perform the Circuit/System Verification before proceeding with the Circuit/System Testing.
    • You must perform the Diagnostic Repair Verification after completing the Circuit/System Testing.

     

    1. Engine idling, at operating temperature.

      1.1. Command the EGR solenoid to 0 % with a scan tool.

      1.2. Observe the Induction System Leak Indication parameter for 10 s. Verify the parameter stabilizes after 10 s and is between 0.8:1 and 1.2:1.

      1.3. Slowly increase the engine speed until reaching wide open throttle (WOT).

      1.4. Verify the Induction System Leak Indication parameter stabilizes after 10 s and is between 0.8:1 and 1.2:1.

        • If stable after 10 s and between 0.8:1 and 1.2:1.
      • Verify the exhaust gas recirculation valve is in the closed position, by visual inspection. Refer to Exhaust Gas Recirculation Valve Replacement .
        • If the exhaust gas recirculation valve is not closed.

          Replace the exhaust gas recirculation valve and gaskets.

        • If the exhaust gas recirculation valve is closed.
      • Ignition OFF, disconnect the harness connector at the (5 Pin) B75B Mass Air Flow/Intake Air Temperature sensor.
      • Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Test for less than 2 Ω between the mass air flow ground circuit terminal E and ground.
        • If 2 Ω or greater

        4.1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.

        4.2. Test for less than 2 Ω in the ground circuit end to end.

          • If 2 Ω or greater, repair the open or high resistance in the circuit.
          • If less than 2 Ω replace the K20 Engine Control Module.
        • If less than 2 Ω
      • Ignition ON, verify a test lamp illuminates between the ignition voltage circuit terminal D and ground.
        • If the test lamp does not illuminate and the circuit fuse is good

        5.1. Ignition OFF, remove the test lamp and remove the fuse for the ignition voltage circuit.

        5.2. Test for less than 2 Ω in the ignition voltage circuit end to end.

          • If 2 Ω or greater, repair the open/high resistance in the circuit.
          • If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse.
        • If the test lamp does not illuminate and the circuit fuse is open

        5.1. Ignition OFF, remove the test lamp and remove the fuse for the ignition voltage circuit.

        5.2. Test for infinite resistance between the ignition voltage circuit and ground.

        5.3. Test for greater than 2 Ω between the ignition voltage circuit terminal D and ground.

          • If less than infinite resistance, repair the short to ground on the circuit.
          • If infinite resistance
          • If less than 2 Ω, repair the short to ground on the circuit.
          • If greater than 2 Ω, test all the components connected to the circuit and repair or replace as necessary.
        • If the test lamp illuminates
      • Ignition ON, test for 4.8–5.2 V between the mass air flow signal circuit terminal C and ground.
        • If less than 4.8 V

        6.1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.

        6.2. Test for infinite resistance between the signal circuit and ground.

        6.3. Test for less than 2 Ω in the signal circuit end to end.

          • If less than infinite resistance, repair the short to ground on the circuit.
          • If infinite resistance
          • If 2 Ω or greater, repair the open/high resistance in the circuit.
          • If less than 2 Ω, replace the K20 Engine Control Module.
        • If greater than 5.2 V

        Note: If the signal circuit is shorted to a voltage the engine control module or the sensor may be damaged.

        6.1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.

        6.2. Ignition ON, test for less than 1 V between the signal circuit and ground.

          • If 1 V or greater, repair the short to voltage on the circuit.
          • If less than 1 V, replace the K20 Engine Control Module.
        • If between 4.8–5.2 V
      • Ignition OFF, connect the leads of the EL 38522Variable Signal Generator as follows:
        • Red lead to the signal circuit terminal C at the harness connector
        • Black lead to ground
        • Battery voltage supply lead to B+
      • Set the EL 38522Variable Signal Generator to the following specifications.
        • Signal switch to 5 V
        • Duty Cycle switch to 50 % (Normal)
        • Frequency switch to 5 KHz
      • Engine idling.
      • Verify the scan tool MAF Sensor parameter is between 4,950–5,050 Hz.
        • If not between 4,950–5,050 Hz.

          Replace the K20 Engine Control Module.

        • If between 4,950–5,050 Hz.
      • Test or replace the (5 Pin) B75B Mass Air Flow/Intake Air Temperature sensor.

      Repair Instructions

      Perform the Diagnostic Repair Verification after completing the repair.

      Portions of materials contained herein are sourced from General Motors Inc., Co.

      Copyright 2007 - 2015 Service Repair Solutions, Inc.

      Print Image

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      do you have a scanner that reads data?

      Ask Your Own GMC Question
      Customer reply replied 8 months ago
      Thanks for the info. We have a tech2

      if you need more let me know...hows it going?

      Ask Your Own GMC Question

      If you feel I have been of help please do give me a rating

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      Customer reply replied 8 months ago
      We believe the issue can be resolved by either deleting the DPF or EGR. Do you know of an easy way to accomplish this with a scan tool or cheap kit? Btw, the truck is located in SE Asia so there is no over-reaching government regulation to prevent us from doing so.Also, I was told that this all started because the owner failed to refill the DEF when it was low. He waited until it drained (Ignorant). This then disabled the truck from going pass 4 MPH. Can a simple DPF scan reset addressed this? I guess we will find out in a few days when the scan tool we ordered arrive. If you have any further suggestions, please let me know. Thanks

      if you disable egr engine problems could occur...not recommemded........ drain and fill system with fluid and reset system...

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      Customer reply replied 8 months ago
      I'm assuming you're referring to draining the DEF tank? What reset are you referring too, DPF? How could I reset if the code does not display on MIL?

      if the code is in memory it can be reset if the problem is resolved eventhough no light on dash at present

      Ask Your Own GMC Question

      egr not just random emission component . egr cools combustion chamber temperatures...yes to reduce nox but we don't those temps higher than manufacturer engineered the engine for...make sense? back in the 70s might have gotten away with that but today...no

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      hello are you waiting to receive scanner?

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      Customer reply replied 8 months ago
      i'm waiting for the scanner and will keep you posted.
      Customer reply replied 8 months ago
      You didn't answer my previous questions regarding your draining and reset suggestions.

      so i assume that you have since drained and filled system with fresh clean fluid?

      Ask Your Own GMC Question

      from my understanding your employee let the system get low in the first place why this happened?

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      Customer reply replied 8 months ago
      The owner didn't act on the warning MIL until ECU limited speed.

      so vehicle starts and runs normally now? but you have a warning light staying o or just a code in memory? which codes (s) are they? p2510 only? does vehicle STILL start fine, but not cut off till relay is pulled? have you tried to clear codes with tech2? plz carefully answer every question....thank you

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      did all these problems occur all at same time as it ran out of fluid?

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      Customer reply replied 8 months ago
      Car start and shuts off but does not go pass 4 mph. Codes I mentioned above have not been addressed yet. I tried to click on the links to learn more on how to isolate the issue but identifix links has timed out. Could you fix the bro***** *****nks?

      I thought I read engine abruptly returned to normal state....also did you check the info on other codes?

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      Customer reply replied 8 months ago
      Negative. I wanted to check the info but your links above are broken.

      clear all codes with tech 2...Is engine still running poorly or did it return to normal state as you said earlier. clear all codes record them on paper...reset any thing that needs to be reset...drive vehicle and see if any codes return...if codes return then run the tests on those codes in the information I previously replied with your answer...by the way if you could rate me with a positive rating...that would be good as that is important...if you still need more information please let me know...the codes you had were intake air temp codes and the tests are included at the top of page...do you need help on how to diagnose codes? If you have specific questions on testing please ask the question and I will answer that as well....if you need lots of detail I would suggest a phone call...you can request one and we can talk on the phone

      eric remington
      Category: GMC
      Satisfied Customers: 296
      Experience: mechanic/service advisor at topline auto
      Verified
      eric remington and 87 other GMC Specialists are ready to help you
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      Customer reply replied 8 months ago
      It's evening here. I will need to continue with the diagnosing tomorrow. Hopefully, my new scanner will arrive tomorrow. Yes, I may need to have you assist me in diagnosing codes. Phone assistance with your will likely be my next option. I will keep you posted as to when will work best both of us.

      you also stated you had a mass air flow sensor code...it is possible that this code along with intake air temp were set when the vehicle was running poorly so I would erase and rive the vehicle if codes return perform the tests I included if codes do not return then problem is intermittent or was a result of vehicle running out of fluid...which is why all this started in the first place. You could have more than vehicle running out of fluid and a bad relay....but erase codes and road test...make sense? any questions? thank you if not please give me a positive rating if you need help I will help you until problem or problems are resolved....oftentimes when a situation gets involved I usually request a phone call as it tend to clarify matters and speeds up process reduce misunderstandings etc....ok?

      eric remington
      Category: GMC
      Satisfied Customers: 296
      Experience: mechanic/service advisor at topline auto
      Verified
      eric remington and 87 other GMC Specialists are ready to help you
      Ask your own question now
      Customer reply replied 8 months ago
      Gotcha. I will reset codes tomorrow. However, the truck does not go pass 4 mph so driving it isn't an option. You're right about miscommunication and a phone conversation is better. Perhaps, tomorrow Wednesday around 7-8 pm your time I can call you.

      yes 7 or 8 is fine

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      which web browser are you using...try windows explorer for the links

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      I can also send you via email

      Ask Your Own GMC Question

      any specific information requested so I can prepare for conversation would be appreciated thank you

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      Customer reply replied 8 months ago
      I'm using chrome. Yes please send email so I can go run through the procedure before we chat tomorrow. Before we chat I want to gather as much info as possible for you. What time zone are you in?

      US eastern standard time

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      ok will send email

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      Customer reply replied 8 months ago
      Did you received my email? When can we chat?
      Ask eric remington Your Own Question
      eric remington
      eric remington
      eric remington
      Category: GMC
      Satisfied Customers: 296
      296 Satisfied Customers
      Experience: mechanic/service advisor at topline auto

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      Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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