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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 65 (AUTOMATIC TRANSAXLE SERVICING)REMOVAL & INSTALLATIONREVERSE SERVOINSTALLATION
1999 GMC Forward Control 5.7 R, Automatic

Reverse Servo: Installation

1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: Follow this procedure exactly or the transaxle will have no reverse gear due to the servo pin missing the band.
  1. Jack up the driver side (channel plate side) of the car until it is higher than the differential side. This ensures that the reverse band is in the proper location and not cocked to the channel plate side of the case.
  2. Install the servo spring. See Figure . Install the servo assembly. Install the reverse servo cover with new O-ring seal. See Figure . Install the snap ring.
  3. Install the shift cable lever to the manual shaft. See RANGE SELECTOR CABLE  . On models with 3.4L engine, install the throttle body air inlet duct. On models with 3.8L engine, install air cleaner assembly.
RENDER: 1.0x

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When to See a Mechanic

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.