Question about 2006 Pontiac Grand Prix
Having same problem with reduce engine power, good engine hard to pin point without pros.After driving awhile discover blown intake manifold gaskets..take awhile to show external signs.Remove throttle body...if gasket inside is wet then start there.Let me know how it turns out uh.
Posted on Dec 22, 2012
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Posted on Jan 02, 2017
Check you leads on your throttle body plug. This is a GM problem but they have not had enough complaints to recall any vehicles. Some other GM vehicles have the same issue and the dealer can't seem to solve it or acknowledge the problem.
Posted on Mar 15, 2010
best bet is to stop in at a Pep Boys, Autozone, or similar big autoparts seller, and ask for free trouble code scan, which should pinpoint area causing problem. If not obvious by codes, what is necessary to repair the problem code, get back to us with those codes and we will be glad to assist you further. Better this way, takes away the guess work, and saves you money, as well as getting it right the first time.
Posted on Dec 12, 2009
hi some vehicles are fitted with what is known as a "limp home" system, this might be a fault with the transmission, and what it is doing is reducing the power so you do not cause any damage to the motor, this will have to be put on a diagnostic system to find out what is exactly wrong, but normally it is to do with the gear selector switch...hope this helps
Posted on Jun 05, 2010
If your lucky, your car is still under warranty. If your warranty is over, you can go to Auto Zone and have the car scanned for the DTC codes. The DTC codes will inform you the issues that need to be addressed so you can have your car running 100% again. Note: Auto Zone scan free of charge and can give you the step by step instruction to address the issues free of charge and if there are any parts that need to be replace, there parts price are reasonable and most of the time are life time replacements. Good luck and keep me posted, be glad to help you get your car running 100% again soon
Posted on Oct 19, 2009
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