GMC Jimmy motor trouble
Asked by Chris Oct 23, 2017 at 02:50 AM about the 2001 GMC Jimmy 4 Dr SLT 4WD SUV
Question type: Maintenance & Repair
ok so i have a 2001 GMC Jimmy and went to fire it up just now and all i hear
is a bang and smoke poring out of the hood. what could be the cause
because when i try to restart it, it idled extremely rough and will backfire at idle
and hissing a hissing sound is coming from the engine compartment. i just
would like to know if it jumped timing or blown head gasket or what, please
help.