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 5.7 K, AUTOMATICREPAIR AND DIAGNOSISSTEERINGMANUAL STEERINGPOWER STEERING GENERAL SERVICINGTESTINGPREPARATION
1991 GMC Forward Control 5.7 K, Automatic
Power Steering General Servicing: Testing: Preparation
1991 GMC Forward Control 5.7 K, AutomaticSECTION Preparation
- Ensure belt tension is correct. Disconnect power steering pump pressure hose. Keep hose end raised to prevent fluid loss. Connect Pressure Gauge (J-5176-D) hose to power steering pump fitting. Connect other hose from valve side of tester to steering gear inlet.
- Open valve. Run engine until fluid reaches normal operating temperature of 150-170°F (66-77°C). Check fluid level. Add fluid (if necessary).
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.