2001 GMC Jimmy

2001 GMC JIMMY
170,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
SAMMY70
  • MEMBER
  • 2 POSTS
I have a 2001 GMC Jimmy we replaced the fuel pump and after that it started misfiring had codes read and said misfire on 5th cylinder changed spark plugs and wires and distributor cap still doing it any suggestions?
Jan 10, 2009 at 6:28 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
BILLYMAC
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 2,204 POSTS
under the plantum there is a fuel inj control unit.this is 6 popit valves they have orings on them the orings go bad and cause too much gas into cyl and misfire. not a extremely hard job but care must be taken. good luck billymac
Jan 12, 2009 at 9:15 AM
Advertisement