I have a 1992 GMC 1 ton truck it keeps dogging out and won't go above 45 mgh?

Asked by Debra May 15, 2015 at 11:29 PM about the 1992 GMC Sierra 2500 2 Dr K2500 SLE 4WD Extended Cab LB

Question type: Maintenance & Repair

1 Answer
1,075

Joe answered 8 years ago

hi debra it could be your catalytic convertor is bad plugged,does the engine start up easy and has no shake at idle

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