Question about 2008 Chevrolet Tahoe
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Posted on Jan 02, 2017
i am on here because of an issue i am currently having with a 2004 tahoe, but after reading some the other problems people are having i will let you in on a previous experience i had with a 2002 chevy truck. my previous vehicle was a 02 chevy 2500hd with the 8.1 and the problem started on day when suddenly it shut off. it did restart with no problem. i never had that problem again until a month later and 1500 miles away when i went to texas to visit my sister. this time it took nearly 30 mins before it would restart. it would crank over fine but no fire. then suddenly out of no where it would fire up like nothing ever happened. so anyways to make a long story short i visited two different gm service centers, they did tune ups and diagnostics, and handed me the bills for over 500 dollars and told me that should do it. yea right the problem continued and then i searched online and one item that kept coming up was the crank position sensor. after reading what those people were dealing with i gave it a shot. went to the dealer bought a new sensor ($99) took an hour to install it and i never had the problem again. one last thing im gonna add. i had a friend that drove a late 90s or early 2000s grad prix, she was having the same problem and had her car in and out of the shop and never got it resolved, i told her to have them check the crank position sensor and bingo, she never had the problem again.
Posted on Feb 17, 2009
Code p0300 is the code for "random missfire detected". The "check engine" light is flashing to warn you that severe damage is being done to the catalytic converter.(very expensive)..
Posted on Apr 28, 2009
Hello. Your vehicle and most other recent ones have on an on-board computer called an Electronic Control Module or ECM. The vehicle computer system has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and your car needs to be looked at. To properly diagnose what is wrong, you need to take your car to a mechanic or a dealer. The technician at the dealership or a garage will then hook up the scanner to the car computer and retrieve the stored trouble code(s). Then he (she) will look it up in the service manual provided by a car manufacturer. The service manual contains the list of possible codes (about few hundreds) and describes what each code means and what needs to be tested. The code itself doesn't tell exactly what component is defective - it only indicates where to look, what engine parameter is out of normal range. The technician will have to perform further testing to pinpoint a defective part.
Recently many auto parts stores, such as auto zone, offer the free service of scanning your computer and pinpointing the reason why your check engine light comes on. I recommend that you start there as it is free. Regards, Joe
PS please rate my answer. Thank you. Happy Holidays
Posted on Dec 19, 2009
Check engine light came on for a reason. Could be one of a hundred reasons. My adivce would be to go to Advance Auto, O'Reilly's or any of the many Parts Stores and "borrow" a Code Reader. Easy to use and most places let you use it for FREE. The Code Reader will show what Code was set and what it MIGHT be. The Code Reader also resets the Codes and the Check Engine Light will go off.... until it senses something is wrong with your truck.
Posted on Dec 29, 2009
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