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HOMESERVICE MANUALSCADILLAC2011ESCALADE BASE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 920 (AUTOMATIC TRANSMISSION - ALLISON - REMOVAL & INSTALLATION, SERVICE, OVERHAUL, TROUBLESHOOTING & DIAGNOSIS)ON-VEHICLE REPAIR INSTRUCTIONSCONTROL VALVE SOLENOID REPLACEMENT (PCS1 AND PCS2)INSTALLATION PROCEDURE
2011 Cadillac Escalade Base, AWD

Installation Procedure

2011 Cadillac Escalade Base, AWDSECTION Installation Procedure
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Exploded View Of PCS1 and PCS2 Components
    GM1633279Courtesy of GENERAL MOTORS CORP.
  1. Obtain the new solenoid (1) or (8). Lubricate new O-ring (2) or (7) with clean transmission fluid. Install the O-ring and push the new solenoid into the control valve body bore with the wiring harness connector in the correct position.
  2. Install the 2 accumulators (3) and springs (6) before installing the pressure control valve retaining bracket (5). The valve (3) goes in the bore first with the hollow end facing outward, followed by the spring (6) which goes inside the hollow portion of the valve.
    3. NOTE: Refer to Fastener Notice .
  3. Install the pressure control valve retaining bracket (5), and install the 3 bolts (4).

    Tighten:  Tighten the bolts to 12 N.m (108 lb in).

    4. Fig 2: Reverse Signal Pipe Bolts
    GM1633276Courtesy of GENERAL MOTORS CORP.
  4. Install the reverse signal pipe. Install the 2 bolts that fasten reverse signal pipe to the control valve assembly.

    Tighten:  Tighten the bolts to 12 N.m (108 lb in).

  5. Reconnect the internal wiring harness to the solenoid.
  6. Install the oil pan and transmission internal oil filter. Refer to Oil Pan Replacement .
    7. IMPORTANT: The FastLearn, adapt, procedure must be performed. This can be done in 1 step using a scan tool. If this procedure is not done, the TCM adaptive values will be at the settings that it learned for the old components and will be in slow adaptive mode. Under these conditions, it will take an unacceptably long time for the adaptive values to converge to levels suitable for the new transmission.
  7. Perform the FastLearn procedure. Refer to FastLearn Procedure .
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.