Question about 2003 GMC Sierra C/K3500
Esp when under load , feels like eng miss , no codes , im a ford tech by trade so im thinking maybe a coil pack going bad ,what is the correct way to test gmc coil packs and are there any other things to look for shouldnt it be throwing a code obd2 cant find 5500 on list so i put closest vehichal i could find thanks forvyour help
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Posted on Jan 02, 2017
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