Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
Problems for specific Pontiac models:
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Most reported Pontiac problems
The EGR tube may develop an engine vacuum leak causing the Check Engine (SES) light to illuminate.
Corrosion at the fuel tank to body harness may cause the Check Engine Light to illuminate or a crank no start condition. This corrosion issue is most commonly caused by a water leak inside the vehicle. Any damaged wiring or connectors will require replacement.
The rear axle pinion seal may leak causing fluid loss and possible internal rear end damage. Replacing the faulty seal will commonly correct this concern.
800.00 it cost to put a rear trans mount in, car was making a snapping sound when i had to brake hard, engine and front struts where slamming forward about 6 inches, i had just got a lowerer control arm put in 2 months before this wich cost 600.00 for that
No heat coming through air ducks. I replaced the heater core 2 yrs ago & the thermostat last year. What do you think? Thank you!
A/C cool on passenger but warm on driver. Car has dual climate control. This problem occurred recently so I went online to find some solution. Everyone said it was the mix air damper control not opening completely. After standing on my head for 2 hours working under the dash I found all the motors were operating just fine. So I sat and stared and scratched my head. With the engine running and hood up and a/c on I found the problem.
Just a br...