1994 GMC Forward Control 7.4 NFACTORY OEM SERVICE PROCEDURE

Torque Specifications

TORQUE SPECIFICATIONS

Application Ft. Lbs. (N.m)
Astro & Safari
Tie Rod Adjustment Sleeve Clamp Bolts 13 (18)
Upper Control Arm Nuts
2WD 85 (115)
4WD 107 (145)
Wheel Lug Nuts 100 (136)
"G" & "P" Series
Tie Rod Adjustment Sleeve Clamp Bolts 14 (19)
Upper Control Arm Nuts
Except G15/25 & R15 105 (142)
G15/25 & R15 70 (95)
Wheel Lug Nuts
"G" Series
Dual Wheels 140 (190)
Single Wheels 111 (150)
"P" Series
Dual Wheels (8 Studs) 140 (190)
Dual Wheels (10 Studs) (1) 177 (240)
Single Wheels 120 (163)
"S" & "T" Series
Tie Rod Adjustment Sleeve Clamp Bolts 14 (19)
Upper Control Arm Nuts
"S" Series 65 (88)
"T" Series 70 (95)
Wheel Lug Nuts 96 (130)
(1) Tighten in 2 steps. Initially tighten all studs to 140 ft. lbs. (190 N.m), and then tighten to 177 ft. lbs. (240 N.m).
Factory Service Tools

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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.

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