1993 Pontiac Bonneville Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1993 Pontiac Bonneville
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1993 Pontiac Bonneville ProblemsMode/Temperature Door Actuators May Fail
The mode and temperature door actuators may fail causing improper air flow or temperature output from the heating and AC (HVAC) system.
The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure control solenoid.
1993 Pontiac Bonneville QuestionsWhy is my NOx so high (1 answer)
I passed everything on my emissions but my NOx was real high