1990 GMC Suburban 1500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 GMC Suburban 1500
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1990 GMC Suburban 1500 ProblemsService transmission every 30,000 miles
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.
1990 GMC Suburban 1500 QuestionsI lost all electronic power and the motor shut down as well (1 answer)
I was seating there and my heater shut down first then I lost all power
I have checked the transmission fluid and it's OK
IT will sputter it wont run long even in idle.