The EGR tube may develop an engine vacuum leak causing the Check Engine (SES) light to illuminate.
Problems for specific Pontiac models:
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Most reported Pontiac problems
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
Part that opens and closes the outside fresh air vent was stuck in the recirculate position. Dealer replaced the part under warranty which was just about to expire. Only other problem is the front brakes are starting to squeak a bit. Pads are original ones. Probably time for a change. No other problems to report
No heat coming through air ducks. I replaced the heater core 2 yrs ago & the thermostat last year. What do you think? Thank you!