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Originally Posted by molehole
Ok this might sound stupid, but is your gas cap tight? That can cause the light to come on. THe dealer should be able to read a stored code, don't let them tell you they can't. Good Luck
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No sure if my gas cap was tight or not. The 1st time, the light was on in evening commute home and stayed on for 2 key starts. The light come on in the morning and off in the eveing. Then yesterday morning, the light was on again until the techcian shut off my car and the light remained off since... I did twist the gas cap last night to be sure that it was tight. If my gas cap wasn't tight, should the light be on all time? I believe the gas cap trigger the "Service Engine Soon Light" because of fuel pressure related, right?
My search on the "Service Vehicle Soon light" point to problems with bad headlamp or Daytime Saving Light relay (mostly on GrandAM & buick). In my case, all the lights are working prefectly...
Again, "Service Vehicle Soon Light" is different from "Service Engine Soon Light". So are you saying that "Service Vehicle Soon Light" will generate some sort of code(s)?
The last techcian who found no code was using a large pad GM Tec2(sp?) placed on my steering wheel. He was busying keying something when a young tech who happened to work by and said that my car needed a "candy". They got into an argument and at the end young guy was right and my tech had to go back in to retrieve a connect module. Now I am wondering the tech might have inadvertantly erase the code or he was not knowledgeable to use the scanner with the module... Next time should the light come up, I will stop by autozone first.
I did complaint to Chevy but GM & the local dealer (I didn't buy my car from them) failed to agree to provide me with free loaner car altought the service manager agreed to "take a look" if I drop my car off for a day. Without GM or the dealership telling me what specfic action to fix my car's problem, I won't leave my car with them and lose a day of my work for nothing...