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1999 GMC C6500 7.4L No Start, Poor Idle Quality, Surge, Stall, Misfire
Posted to GM Driveability on 11/6/2006 3 Replies

Vehicle acts up mostly warm. Sometimes won't start, as you let off ignition switch sometimes will backfire. If it backfires let off switch and try again and will start. Have replaced all grounds. originally had no CEL with Ign. switch on and would only crank f...

3 Replies Received (View Replies)

 
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car Vehicle Data

1999 GMC C6500

VIN 1GDJ7H1DXX
Engine7.4 L / 8 cyl
DeliveryFI / SFI
EmissionsOBD-II Compliant
SymptomsNo Start, Poor Idle Quality, Surge, Stall, Misfire
OccursIntermittently
Misc.Ex Ryder Truck
Message Closed

car Vehicle Data

1999 GMC C6500

VIN 1GDJ7H1DXX
Engine7.4 L / 8 cyl
DeliveryFI / SFI
EmissionsOBD-II Compliant
SymptomsNo Start, Poor Idle Quality, Surge, Stall, Misfire
OccursIntermittently
Misc.Ex Ryder Truck