Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 39 (AUTOMATIC TRANSAXLE OVERHAUL & TESTING - 4T65-E)TRANSAXLE DISASSEMBLYOUTPUT SHAFT
1999 GMC Forward Control 5.7 R, Automatic
Output Shaft
1999 GMC Forward Control 5.7 R, AutomaticSECTION Output Shaft
WARNING: This page does not describe the selected car, but rather 43 other vehicles, including the 2003 Pontiac Montana, 2003 Pontiac Grand Prix, 2003 Pontiac Bonneville, 2003 Pontiac Aztek, and 2003 Oldsmobile Silhouette. However, it is still accessible from the selected car via links, so may be relevant.
- Remove case extension bolts. Remove case extension and extension seal. See Fig 1. Leave front differential carrier thrust washer and bearing on carrier. Rotate differential carrier until differential carrier pinion shaft is in horizontal position.
- Place Axle Remover Wedge (J 42562) between end of output shaft and differential pinion shaft. Using hammer, strike axle removal wedge to compress snap ring and push output shaft from differential side gear. See Fig 2. Remove differential carrier assembly and snap ring from output shaft. See Fig 3. Remove output shaft assembly. See Fig 4.
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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.