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Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 15,208
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GMC service engine soon light
I recently purchased a 1997 GMC 1500 series pickup with the 5.7 litre engine. Truck has 98,000 miles and starts and runs excellent no issues. Today out of the blue the service engine soon light came on. This truck has OBDII and I know I can have the code scanned but I was wondering what triggers the light? I removed the gas cap and put a little teflon grease on the rubber seal and tightened the cap. Being new to this vehicle I don't know if this light is triggered by needing an oil change? I also have to figure out how to reset the light? Any help is appreciated.
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2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser. 1999 996 C4 coupe black/grey with FSI 3.8 engine . Rear diffuser , front spoiler lip with ducktail spoiler .
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