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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 999 (Automatic Transmission - ALLISON (Introduction, Service & Replacement)) >> Repair Instructions >> Control Valve Solenoid Replacement (Solenoid A, B) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  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.
    Fig 1: Locating Control Valve Solenoids
    GM658989Courtesy of GENERAL MOTORS CORP.
  2. Reinstall 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 in Cautions and Notices.
  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: Installing The Reverse Signal Pipe
    GM658988Courtesy of GENERAL MOTORS CORP.
  4. Install the reverse signal pipe. Install the 2 bolts (2) that fasten reverse signal pipe (1) 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 .
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