Turn Off Check Engine Light
Burning Brakes
Joined: Jul 2000
Posts: 883
Likes: 3
From: wilmington DE
You may be able to do it with an OBD reader with reset capability. On the C5 you were able to scan through the codes and reset them. You may get a better answer to this in the technical section.
Safety Car
Joined: Aug 2012
Posts: 3,960
Likes: 1,106
You should always find out what the code is before erasing it. Some codes will be reset after multiple restarts, others require certain driving/operating conditions to be met, and some indicate a "hard" failure that requires repair. I wouldn't be without a code reader but OnStar can retrieve some codes for you while most auto parts stores will also read them.
Burning Brakes
Joined: Apr 2016
Posts: 865
Likes: 326
You can try a complete system discharge, which is taking both terminals off the battery and grounding the terminals to each other for 30 seconds, this will power down any modules that stay on even when the battery is dead. Sounds goofy but this fixes 98% of electrical issues in German cars and the way GM is going I would try that first or buy a cheap scanner and clear it that way.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,010
Likes: 12,396
From: NE South Carolina
They are inexpensive, even Harbor Freight has them. Then you can see the issue and then reset.Or the OP can always use the old "Click & Clack" solution when folks had an old car and they diagnosed it was a trivial item- a piece of black electrical tape over the indicator!
Last edited by JerryU; Jun 2, 2016 at 07:35 AM.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,010
Likes: 12,396
From: NE South Carolina
On my modified S10, when between Vettes, I installed a low temp thermostat to go with the Hypertech modified program (93 octane and more advanced timing) I installed. In the summer no problem, in the winter, on cold days, it would trip a code and I would reset with my OBD II. If it was near the end of our short winter I would just leave it and as I recall after 3 or 4 restarts and running for 10 or 15 minutes each so the oil was hot, if the fault was gone (in this case low temp after the oil was hot) it would reset itself.
Last edited by JerryU; Jun 2, 2016 at 07:48 AM.
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