Question about 1997 Chevrolet Tahoe

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Service engine light

Recently installed rebuilt motor.had to wait for system reset to put through CT. emmisions. vehicle passed. two days later after 30 mi. of driving service light comes on @ start and stays on.what' up?

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You need to have the chev checked for what code set the light on and then go from there

Posted on Dec 10, 2009

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PASS-Key II is a passive theft-deterrent system. It works when you insert or remove the key from the ignition.
PASS-Key II uses a resistor pellet in the ignition key that matches a decoder in your vehicle. When the PASS-Key II system senses that someone is using the wrong key, it shuts down the vehicle's starter and fuel systems. For about three minutes, the starter won't
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Clean and dry the key. Wait about three minutes and try again. The SECURITY light may remain on during this time. If the starter still won't work, and the key appears to be clean and dry, wait about three minutes and try another ignition key. At this time, you may also want to check the fuses (see "Fuses and Circuit Breakers" in the Index). If the starter won't work with the other key, your vehicle needs service. If your vehicle does start, the first ignition key may be faulty. See your dealer or a locksmith who can service the PASS-Key II.

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See your dealer or a locksmith who can service the PASS-Key II to have a new key made.

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Also this could helpfull: 2000 Chevrolet Camaro - Owners Manual

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When you rest your codes there is a series of tests your ECU has to go through before you can pass emissions. this is done some people can reset the code and go before its sets the code again. on the 96 you can have 2 tests not complete for it to pass. basicly you have to drive the car a couple days for the tests to pass.

check the readiness tests wait until only 2 have not passed. then you should be good.so drive and check.

Michael
ASE certified
PLZ rate.

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