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Home >> GMC >> 2007 >> Yukon Denali >> Repair and Diagnosis >> External Pages >> Different car >> Section 892 (Automatic Transmission - 4L80-E/4L85-E - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - Off Vehicle >> Low and Reverse Band Servo Assembly Assemble

Low and Reverse Band Servo Assembly Assemble

WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Low & Reverse Accumulator Piston Oil Seal Rings
    GM40602Courtesy of GENERAL MOTORS CORP.
  1. Install the new low and reverse accumulator piston oil seal rings (67, 69) on the 1-2 accumulator piston (68). Lubricate the low and reverse accumulator piston oil seal rings (67, 69) with DEXRON®VI automatic transmission fluid.
    2. Fig 2: Locating 1-2 Accumulator Piston Spring Assembly
    GM40603Courtesy of GENERAL MOTORS CORP.
  2. Install the 1-2 accumulator piston spring assembly (88) into the low and reverse band servo piston (65).
  3. Install the 1-2 accumulator piston (68).
    4. Fig 3: Identifying Position Of Low & Reverse Band Servo Piston Spring Retainer
    GM40604Courtesy of GENERAL MOTORS CORP.
  4. Assemble the following items, in order, onto the small diameter end of the correct low and reverse band servo piston pin (73):
    1. The low and reverse band servo piston spring retainer (72)
    2. The low and reverse band servo piston spring (71)
    3. The low and reverse band servo piston spacer (87)
    4. The low and reverse band servo piston (65)
  5. Install the low and reverse band servo piston pin retainer ring (64).
    6. Fig 4: Locating Low & Reverse Band Servo Piston Seal
    GM40605Courtesy of GENERAL MOTORS CORP.
  6. Install the new low and reverse band servo piston seal (66). Lubricate the low and reverse band servo piston seal (66) with DEXRON®VI automatic transmission fluid.
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