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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 981 (Automatic Transmission - 4L80-E/4L85-E (Introduction, Service & Replacement)) >> Repair Instructions >> Reverse Servo Replacement >> 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. Install the rear servo to the transmission in the following order:
    Fig 1: Rear Servo Assembly
    GM512992Courtesy of GENERAL MOTORS CORP.
    1. Accumulator spring (14)
    2. Selective pin (13)
    3. Servo spring retainer (12)
    4. Servo spring (11)
    5. Washer (10)
    6. Piston seal (9)
    7. Accumulator piston (8)
    8. Inner ring oil seal (7)
    9. Outer ring oil seal (1)
    10. Servo piston (2)
    11. Bottom retaining clip (3)
    12. Cover gasket (4)
    13. Cover (5)
    14. Cover bolts (6)
      NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Tighten the cover bolts (61).

    Tighten:  Tighten the bolts to 24 N.m (18 lb ft).

  3. Install the transmission filter. Refer to Automatic Transmission Fluid/Filter Replacement .
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