2006 duramax diesel, reduce engine power in showing in the DIC and also a check engine light. Top speed 30 won't tack over 2000.
Country: United StatesMake: ChevroletModel: Silverado 2500Year: 2006Engine: diesel
Tried reflashing with my PDE programmer
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what code are yougetting?
sorry thats not for you
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Sometimes chat has issues so I switch us here. I was asking if you have your codes handy?
The codes are 106 and 699.
code 106 and 699. I can reset them with the flasher but they return within a few seconds
Daniel making sure you got my responses on the codes?
ok I got them thanks .
CIRCUIT/SYSTEM DESCRIPTION The manifold absolute pressure (MAP) sensor measures the pressure inside the intake manifold. Pressure in the intake manifold is affected by turbocharger output, engine speed, accelerator pedal input, air temperature, and barometric pressure (BARO). A diaphragm within the MAP sensor is displaced by the pressure changes that occur from the varying load and operating conditions of the engine. The engine control module (ECM) supplies a regulated 5 volts to the sensor on a 5-volt reference circuit. The ECM supplies a ground on a low reference circuit. The MAP sensor provides a signal voltage to the ECM, relative to the pressure changes, on the MAP sensor signal circuit. The ECM converts the signal voltage input to a pressure value. Under normal operation, the lowest pressure that can exist in the intake manifold is equal to the BARO. This occurs when the vehicle is operating at idle or when the ignition is ON, while the engine is OFF. The ECM uses the MAP sensor to aid in diagnosis of the turbocharger performance. The highest manifold pressures occur when the turbocharger output is high. Manifold pressure can range from 58 kPa (8 psi) when pressure are low, to more than 240 kPa (34 psi) when pressures are high, depending on the BARO. The MAP sensor has a range of 33-255 kPa (4-36 psi) .CONDITIONS FOR RUNNING THE DTC
CONDITIONS FOR SETTING THE DTC The ECM detects that the BARO and MAP sensors disagree by more than 14 kPa with the ignition ON, for more than 10 seconds .ACTION TAKEN WHEN THE DTC SETS
CONDITIONS FOR CLEARING THE MIL/DTC
SPECIAL TOOLS REQUIRED J 35616-200 Test Lamp KitCIRCUIT/SYSTEM VERIFICATION IMPORTANT: Verify that the engine is in good mechanical condition before continuing with this diagnostic.
IMPORTANT: If you cannot duplicate the condition, 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.
IMPORTANT: Use the J 35616-200 for this test. If the J 35616-200 is not available, use a test lamp that measures more than 20 ohms .
REPAIR INSTRUCTIONS IMPORTANT:
REPAIR VERIFICATION IMPORTANT: Always perform the Turbocharger Learn Procedure. Review the DTC information with a scan tool.
This is basically telling you the map sensor or connection or wires to it is bad. IMPORTANT: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. See: Testing and InspectionCIRCUIT/SYSTEM DESCRIPTION These 5-volt reference circuits are independent of each other outside the engine control module (ECM), but are bussed together inside the ECM. Therefore, a circuit condition on one sensor 5-volt reference circuit may affect the other sensor 5-volt reference circuits. The ECM monitors the voltage on the 5-volt reference circuit.CONDITIONS FOR RUNNING THE DTC The ignition is ON. Diagnostics run continuously.CONDITIONS FOR SETTING THE DTC P0698 The ECM detects the 5-volt reference 3 circuit voltage is less than 4.7 volts . The above condition is present for 2 seconds .P0699 The ECM detects the 5-volt reference 3 circuit voltage is more than 5.2 volts . The above condition is present for 2 seconds .ACTION TAKEN WHEN THE DTC SETS The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails. The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records.CONDITIONS FOR CLEARING THE MIL/DTC The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail. A current DTC, Last Test Failed, clears when the diagnostic runs and passes. A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic. Clear the MIL and the DTC with a scan tool.CIRCUIT/SYSTEM VERIFICATION Engine Starts and runs.CIRCUIT/SYSTEM TESTING Turn OFF the ignition for 30 seconds or until the ECM powers down. Disconnect the accelerator pedal position (APP) sensor. Turn ON the ignition, with engine OFF and measure the voltage from the 5-volt reference circuit of the APP sensor 1 to a good ground with a DMM.If the voltage measures 4.7-5.2 volts , replace the APP sensor.With the DMM still connected to the 5-volt reference circuit, disconnect all other components connected to the 5-volt reference 3, one at a time.If voltage changes when one of the above components are disconnected, replace the component.Test the 5-volt reference 3 circuits for a short to ground or a short to voltage.If no problem was found in the 5-volt reference 3 circuit , replace the ECM.REPAIR INSTRUCTIONS IMPORTANT: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.Accelerator Pedal with Position Sensor Replacement Manifold Absolute Pressure (MAP) Sensor Replacement Turbocharger Vane Position Sensor Replacement Exhaust Gas Recirculation (EGR) Valve Replacement Control Module References for ECM replacement, setup, and programming I would do the 5 volt reference cheak anyway. To be sure. With your symptoms it could be the tpsor apps also.
Most of our fleet is chevy.
Hi I am making sure no questions have come up. let me know if you need anything else at all. ThanksDaniel