20 Most Recent 2008 Pontiac Grand Prix - Page 3 Questions & Answers

Lock the doors then unlock the driver door with the key. My 03 mustang has done that several times too

Try and other auto parts place or call GM dealer or check with the library they should have a book on your car with the info you need.

THe dealer would need to do that.

There is a 2amp cruise switch fuse, instrument panel fuse box. Your owners manual should show fuse box info. There are many trouble codes for the cruise control system, check for applicable codes. To check codes, yourself, at the least you need an obd2 code reader that will read manufacturer specific codes as well as po codes. Some of the national brand autostores will check codes for free. Just curious, do your brake lites work ok?

Check all vacume hoses for leaks

DTC Descriptor DTC C0240: Powertrain Control Module (PCM) Traction Control Not Allowed Circuit/System Description The engine control module (ECM) (LS4) or powertrain control module (PCM) (L26), monitors various parameters and will not allow traction control system (TCS) operation if any parameter falls outside a specified range.

sounds like the switch has failed ,the one on the steering coloumn

may be a relay or fuse

When you removed the old battery you cut the power to your cars brain box EMC or the like. Anyway now your car needs to relearn how to run efficiently. So all you need to do is drive it for a little while. I'm not sure how far before it will relearn but less than 100 miles I'd think. then retest it.

If the sound is from the rear of the vehicle then it may be that the baffle plates in the fuel tank are broken away and allowing full movement of the fuel rather than a controlled movement.

Sounds like a battery issue. First have battery checked on car. If that checks ok then check battery in your fob. If that checks ok then check for good continuity of your battery cables.

You can purchase on at alldatadiy.com. There are probably 300+ wiring diagrams for your car. I buy them per car I work on. But I don't have yours or I would surely give it to you, But you have to state what diagram you are looking for.

Replace the EVAP purge solenoid. It is powered off the same fuse and it works as you are driving and not at idle . The MAF sensor is working all the time the engine is running.

This phenomenon is, to some extent, a pretty normal thing. But since you posted your question here I assume it's too annoying to assume it's normal :) Your thermostat may be stuck open, letting the coolant flow through the radiator too early, whitout letting the engine to warm-up properly. Start the engine (cold). Hold the upper radiator hose (be extremely careful not to touch the rotating engine accessories nor the radiator fan! and watch your sleeves also) and let the engine warm up. If the hose becomes gradually warmer (slowly) from the beginning of this test, your thermostat needs to be replaced. If it happens more "suddenly", then let me know and we'll think of a different solution :) If you have a pyrometer / IR thermometer, it can be helpful.

Although you can hear the catuator it doesnt mean the flap itself is moving over. Double check it and if necessary switch it over manually to check it. One other thing you may want to check, is whether or not your vehicle has a diverter valve in the hood. A lot of newer vehicles never allow hot coolant to circulate through the heater core until u specifically request it, this keeps the car cooler inside and the ac doesn't work as hard to circulate. So if it goes faulty on some vehicles you wont get hot air because there is no hot coolant in the pipes..lol

The cam position sensor is near the top of the engine on the drivers side

check your injectors. and also check your plugs and wires.