Question about 2003 GMC Sierra 1500

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My 2003 GMC Sierra starts for one second then turns off...won't stay running..why? could it be my alarm (paython) doing that?

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Hi !
If the car is running with some light acceleration then there is no trouble with the alarm system...
Use some good additive (meant for cleaning jets and injectors) with your fuel as this would clean the internal fuel supply line...
Also clean the air filter as I see that the car is getting choked.
Regards
Berry

Posted on Feb 01, 2010

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Information courtesy of synthetic-direct.ca
Chevrolet Suburban/GMC Yukon XL, 2000-05 Chevrolet GMC Trucks Silverado, Sierra, 1999-05 Chevrolet Venture 2000
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