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To reset the check engine light on a GMC vehicle, you can try disconnecting the battery for about 15 minutes or using an OBD-II scanner to clear the codes. If the light returns after resetting, it indicates an underlying issue that needs to be addressed. It's advisable to diagnose the problem using the scanner to identify the specific fault codes. Always consult your owner's manual for any model-specific instructions.

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1mo ago

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