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Ken
Ken, ASE Certified Technician
Category: GM
Satisfied Customers: 754
Experience:  GM & SATURN Factory Trained Technician, 25 Years Experience
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location of tcs solenoid and how to replace 05 trailblazer

Customer Question

location of tcs solenoid and how to replace 05 trailblazer 4wd
Submitted: 4 years ago.
Category: GM
Expert:  Ken replied 4 years ago.
Hi and thanks for your question! Could you tell me the name of the part you are wanting to replace. The diag information pulls up TCS as traction control system. Thanks ken
Customer: replied 4 years ago.

TCS71 trans control solenoid Duralast

 

but also TCS71 Wells XXXXXXXXXX /p>

 

VDP parts po #012528

 

purchased at AutoZone ugh

Expert:  Ken replied 4 years ago.
I am looking this up. Did you have a fault code that lead you to replace this solinoid? If so could you give me the code? Ken
Customer: replied 4 years ago.

p0894

 

transmission feels like it slips sometimes and shifts hard I am confused cause I thought this was the 2-3 shift solenoid which is it??????

and also have 02 sensor replaced today

Expert:  Ken replied 4 years ago.
Here is the information you asked for, Ken

Control and Shift Solenoids Replacement

Removal Procedure


    Object Number: 181573  Size: SH

  1. Remove the transmission oil pan and filter.

    Important: Do not remove the valve body for the following procedures. Removal of the 1-2 accumulator is necessary only if servicing the pressure control solenoid.

  2. Remove the 1-2 accumulator if necessary. Disconnect the internal wiring harness electrical connectors from the following components:
    Transmission fluid pressure switch (1)
    1-2 shift control solenoid (2)
    2-3 shift control solenoid (3)
    Pressure control solenoid (4)
    Torque converter clutch (TCC) pulse width modulation (PWM) solenoid (5)
    3-2 control solenoid (6)

    Object Number: 298162  Size: SH

  3. Remove the pressure control solenoid retainer.
  4. Remove the pressure control solenoid.
    Object Number: 298169  Size: SH

  5. Remove the 1-2 and 2-3 shift solenoid retainers.
  6. Remove the 1-2 and 2-3 shift solenoids.
    Object Number: 298167  Size: SH

  7. Remove the 3-2 control solenoid retainer.
  8. Remove the 3-2 control solenoid.

Installation Procedure


    Object Number: 298167  Size: SH

  1. Install the 3-2 control solenoid.
  2. Install the 3-2 control solenoid retainer.
    Object Number: 298169  Size: SH

  3. Install the 1-2 and 2-3 shift solenoids.
  4. Install the 1-2 and 2-3 shift solenoid retainers.

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 298162  Size: SH

  5. Install the pressure control solenoid.

    Ensure that the electrical tabs are facing outboard.

  6. Install the pressure control solenoid retainer and retaining bolt.

    Tighten
    Tighten the pressure control solenoid retaining bolt to 11 N·m (97 lb in).


    Object Number: 181573  Size: SH

  7. Connect the internal wiring harness electrical connectors to the following components:
    Transmission fluid pressure switch (1)
    1-2 shift control solenoid (2)
    2-3 shift control solenoid (3)
    Pressure control solenoid (4)
    TCC PWM solenoid (5)
    3-2 control solenoid (6)
  8. Install the 1-2 accumulator. Install the transmission oil pan and filter. Fill the transmission to the proper level with DEXRON® VI transmission fluid.
  9. Important: It is recommended that transmission adaptive pressure (TAP) information be reset.

    Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, the engine control module (ECM), powertrain control module (PCM) or transmission control module (TCM) will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.

     

     

  10. Reset the TAP values.
Ken, ASE Certified Technician
Category: GM
Satisfied Customers: 754
Experience: GM & SATURN Factory Trained Technician, 25 Years Experience
Ken and 2 other GM Specialists are ready to help you
Expert:  Ken replied 4 years ago.
I want to do a bulletin search for that fault code for you. Give me a few mins. Ken
Expert:  Ken replied 4 years ago.

#08-07-30-008B: Diagnostic Information on Diagnostic Trouble Code (DTC) P0894 and P1870 - (Jun 3, 2008)

Subject:Diagnostic Information on Diagnostic Trouble Code (DTC) P0894 and P1870

Models:2003-2007 GM Passenger Cars and Light Duty Trucks
2003-2007 HUMMER H2
2006-2007 HUMMER H3
2005-2007 Saab 9-7X
with 4L60-E, 4L65-E or 4L70-E Automatic Transmission (RPOs M30, M32 or M70)

 



This bulletin is being revised to remove the 2002 model year. Please discard Corporate Bulletin Number 08-07-30-008A (Section 07 -- Transmission/Transaxle).


Diagnostic trouble codes (DTC) P0894 and P1870, Transmission Component Slipping, may have different root causes. The following diagnostic tips are provided to assist in accurately repairing the condition.

Corporate Bulletin Number 06-07-30-007 is intended for 2006 vehicles only. This bulletin provides diagnostic procedures to determine if the TCC enable solenoid is cracked.
Slip speeds ranging from approximately 100 to 400 RPM at steady state light load driving are usually caused by the TCC not applying.
Slip speeds greater than about 400 RPM at steady state driving are usually caused by a slipping clutch or band. Inspect the oil pan for the presence of excess clutch debris.
A plugged or restricted TCC apply fluid orifice (238, located in the pump) may cause DTC P0894 or P1870, especially in low mileage vehicles with less than 8,000 km (5,000 mi).
A converter clutch valve (224, located in the pump), which does not have full travel of 13 mm (0.5 in) or is stuck in the off position may cause DTC P0894 or P1870. Inspect the valve for chips, debris, nicks or burrs. Also, inspect the springs (225 and 226) to make sure they are not limiting valve travel. A spring that is not fully wound may catch in the bore, limit valve travel and cause DTC P0894 or P1870.
A cut, damaged or missing turbine shaft O-ring seal (615) may cause these DTCs. When installing this O-ring to the turbine shaft, make sure it is fully seated on the groove all the way around the turbine shaft and can be easily rotated with the thumb and forefinger. Failure to fully seat this O-ring may result in cutting when the torque converter is installed.
A cracked or leaking TCC solenoid (part of harness 66) may cause DTC P0894 or P1870. Use solenoid test kit J 44246 to test the operation of this solenoid.
A cracked or leaking TCC PWM solenoid (396) may also cause DTC P0894 or P1870.
If the vehicle has 24,000 miles (38,600 km) or more, and diagnostics have not determined another cause of the DTC, the torque converter should be replaced.

When attempting to diagnose a DTC P0894 or P1870, it is important to also refer to the appropriate Service Information (SI) document for further possible causes of this condition.

Expert:  Ken replied 4 years ago.
That is all I could find. Have a great day, Ken

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