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How do you reset warning lamps on GMC?

Updated: 9/15/2023
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15y ago

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What warning light? The only warning lights that can be reset are the Maintenance Required and Check Engine Light. The Maintenance Required light is reset in different ways depending on model and year. The procedure is listed in your owner's manual. Reset the light after performing scheduled maintenance listed in your owner's manual, usually oil/filter change. The Check Engine light is reset by repairing the problem then unhooking the battery for 15 minutes, on a pre-1996 vehicle. On a 1996 and later vehicle it normally requires you use an OBD2 scan tool to reset the light. If you do not repair the problem that set the fault code, the light will just come back on. Your oil pressure warning light means you have low oil pressure, temp warning light means the engine is over heating, alternator light means the charging system has a problem.

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15y ago
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Q: How do you reset warning lamps on GMC?
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