Originally Posted by 468Blazer there are 2 grounds on the rear of the engine and 1 ground close to front drivers side coming out of harness. I'm assuming your not getting any codes. There are actually two that bolt to the driver's side of the block down low. One comes from the engine harness, the other is the battery ground.
2006 GTO M6 Brazen Orange 2006 Silverado CCSB Duramax
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