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Re: problem with my pontiac 97 grand prix
I suspect that your problem lies within the vehicle's ECC (Engine Control Computer). Prior to replacing it or having it tested, I would try re-setting it. You can do this by pulling the fuse (for good measure) to the ECC and disconnecting the negative battery terminal for thirty seconds.
During the time you have the power disconnected to the ECC, I would go ahead and check all the connections (make sure they're not only connected firmly, but also free of corosion). Electronic connector cleaner and a soft bronze brush (available at electronic supply stores) can be used to clean the connectors if necessary. After cleaning the connection, coat the wire ends with dielectric compound if it was used previously.
I believe the ECC for your vehicle is mounted under the hood on the passenger side wheelwell (front side of the strut tower).
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When the Service engine soon, ABS and TRAC lights are turned on at the same time the computer control units for the engine and the ABS/TRAC systems has sensed a fault in the electronic controls of the engine and/or the emission system and the ABS and Traction Control system (part of the ABS system). When this happens you will seldom feel the car engine run any different or the car drive any different. There are about 200 possible faults that turn the Check Engine light on, the fault in your car is likely a part called the VSS sensor to know for sure what the problem is you must have the system tested; Kragen and Autozone parts stores do this testing for free
Get in touch with the "Better Buisines Bureau" or your state "Attorney General". Those people have a way of making dealerships like that listen. I can't believe they are telling you that it's not a safety issue, when the pedal goes to the floor. You could try a different dealer, or go to an independent shop.
the trac shuts off when theres a check engine light or a abs light on, most likely theres a bad abs wheel sensor but you will have to have the abs computer scaned to find out which one it is. hope this helps.
check tire pressures with a gauge and set to the specs either in door jam or in glove box. your car must be equipt with tire preasure monitoring system so the sensors are inside the wheel normally part of the valvestem.
It is one of your wheel bearings. The problem is easily solved by taking the car to a dealer, or having a code reader, and determining which wheel bearing is bad. The wheel bearing is under $150 and should be installed by someone with some muscle, as the bolts are torqued from the factory extremely tight in a tight location. The wheel bearing have all of your sensors for abs built into them and if that sensor goes out your computer tells the abs and traction control to shut down, hence you get the lights on on the dash.