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 MANUALSGMC1991FORWARD CONTROL 3.9 L, SM465/M20REPAIR AND DIAGNOSISSTEERINGPOWER STEERINGSTEERING SYSTEM - POWEROVERHAULHOUSING ASSEMBLYINSPECTION
1991 GMC Forward Control 3.9 L, SM465/M20
Housing Assembly: Inspection
1991 GMC Forward Control 3.9 L, SM465/M20SECTION Inspection
- If housing bore is severely worn, scored or pitted, replace housing. Minor scratches may be removed with crocus cloth.
- Inspect all retaining ring, bearing and seal surfaces in housing. If any surface is worn or damaged, replace housing.
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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.