Question about 2003 Chevrolet Silverado 2500HD

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The sevice engine light comes on only when driven over 100 kms an hour. it has 105,000ks and did a tune up.took it back to the highway thinking maybe that would be enough.not soon as i got off the highway before the end of the ramp the light never came back on.

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People think like the old days where a tune up fixed 90% of the running problems, not so no more with OBD , OBD2 and CAN systems, the check engine light is the only thing YOU have that tells you there is something wrong with the vehicle. Unless you are able to retrive the codes that are set in memeory in the computer there is nothing anyone here can tell you other then take in to a repair facility that you trust to help you out.

Good Luck

Posted on Aug 25, 2010

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