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Home >> Cadillac >> 2006 >> Escalade AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 784 (Automatic Transmission - 4L80-E/4L85-E - Introduction (2 Of 2)) >> Repair Instructions >> Pressure Regulator Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the pressure regulator valve using J 36850  .
    2. Fig 1: Reverse Boost Valve Assembly
    GM43318Courtesy of GENERAL MOTORS CORP.
  2. Pre-assemble the following parts:
    • The reverse boost valve bushing
    • A new reverse boost valve
    • A new pressure regulator spring retainer
    • The added isolator pressure regulator spring
    • The pressure regulator spring
  3. Install the pre-assembled parts into the pump bore.
    4. Fig 2: View Of Valve Bore Plug Retainer Ring & Reverse Boost Valve Bushing Retainer Ring
    GM102558Courtesy of GENERAL MOTORS CORP.
  4. Install the reverse boost valve bushing retainer ring while holding the reverse boost valve bushing in place.

    Ensure the retainer ring (2) is in the groove.

  5. Install the transmission filter. Refer to Automatic Transmission Fluid/Filter Replacement .
  6. Fill the transmission to the proper level with Dexron® III transmission fluid. Refer to Transmission Fluid Checking Procedure .
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