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 485 (FRONT DRIVE AXLE - 4WD)SPECIFICATIONSFASTENER TIGHTENING SPECIFICATIONS
1999 GMC Forward Control 5.7 R, Automatic
Fastener Tightening Specifications
1999 GMC Forward Control 5.7 R, AutomaticSECTION Fastener Tightening Specifications
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
Fastener Tightening Specifications
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Clutch Cable Coupling Nut | 10 N.m | 89 lb in |
| Clutch Cable Hold Down Bolt | 17 N.m | 13 lb ft |
| Clutch Cable Housing to Differential Carrier Assembly Bolts | 48 N.m | 36 lb ft |
| Differential Bearing Adjuster Sleeve Lock Tab Bolts | 8 N.m | 71 lb in |
| Differential Carrier Assembly Case Halves Bolts | 50 N.m | 37 lb ft |
| Differential Carrier Assembly Shield Bolts | 25 N.m | 18 lb ft |
| Differential Carrier Assembly Shield Bracket Bolt | 103 N.m | 76 lb ft |
| Differential Carrier Assembly to Frame Bolts | 103 N.m | 76 lb ft |
| Drain Plug | 33 N.m | 24 lb ft |
| Fill Plug | 33 N.m | 24 lb ft |
| Four Wheel Drive Indicator Switch | 5 N.m | 44 lb in |
| Inner Axle Shaft Housing to Differential Carrier Assembly Bolts | 48 N.m | 36 lb ft |
| Inner Axle Shaft Housing to Frame Bracket Nuts | 98 N.m | 72 lb ft |
| Inner Axle Shaft Seal Cover to Differential Carrier Assembly Bolts | 25 N.m | 18 lb ft |
| Pinion Shaft Lock Bolt | 33 N.m | 24 lb ft |
| Propeller Shaft Yoke Retainer Bolts | 20 N.m | 15 lb ft |
| Ring Gear Bolts | 80 N.m | 59 lb ft |
| Vacuum Actuator Bolts | 1.4 N.m | 13 lb in |
RENDER: 1.0x
NO RELATED
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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.