1991 Chevrolet Suburban 1500 Problems

RepairPal has identified the most common problems with the 1991 Chevrolet Suburban 1500 as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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8
Known Problems

The power door lock actuators may become slow to operate or stop working completely and require replacement.

The rear axle bearings have been known to wear grooves in the rear axle shafts, creating a grinding noise and leaky axle seals. An indication that this problem has occurred is axle fluid leaking onto the wheel.

A coolant leak may develop form the Intake manifold gasket causing overheating complaints. The coolant leak may be internal allowing coolant to mix with the engine oil, this condition can result in internal engine damage. Be aware that this problem is often mistaken as a blown head gasket.

The pitman arm and/or lower ball joints may wear causing loose steering and alignment issues. Replacement of worn components will be necessary before the alignment can be properly set to specification.

Our technicians highly recommend that the transmission is serviced every 30,000 miles to avoid problems and maintain optimal operating order.
The distributors can go bad and set a trouble code; they should be replaced.
The injection system may need to be adjusted more frequently than recommended.
Faulty glow plugs and incorrect wiring to the glow plugs have been known to cause "hard start" problems.