Question about 1999 Chevrolet Tahoe
I bought a 99 Tahoe about a month ago. No problems so far - until the "Service Engine Soon" light came on. Oil and cooling levels fine; the truck runs fine. What am I looking at?
The triuck needs to be scanned for trouble codes,most major auto part stores will do this for little or no charge. get back to me with the codes and we'll go from there, please rate my fix as i strive to be the best
Posted on May 16, 2009
Take the truck to an autozone they will hook up an o.b.d. 2 to your truck and will print out codes for the check engine light for free, thats what i did. lots of sensors on those trucks could be any of them.
Posted on May 16, 2009
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Posted on Jan 02, 2017
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The information below was complied by me, it explains what causes the check engine light to come on and the process of finding the cause.
When the Check Engine light (or Service Engine Soon) is turned on, the systems computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible system faults (the gas cap is just one of them) that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen/Oriley and Autozone parts stores (USA only) do this testing for free.
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