× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2000 GMC Sierra 1500 SL 5.3L Misfire, MIL Lamp on
Posted to GM Driveability on 8/4/2005 8 Replies

Engine misfire #7 cylinder. Fuel pressure is fine. Tried swapping plug, coil & plug wire. Had converters checked at exhaust shop. Sometimes backfires under load. Cleaned injectors & problem went away for about 20 miles of driving. Read a service bulletin for w...

8 Replies Received (View Replies)

  Related Documents & Media  2000 GMC Sierra 1500 SL

 
Message Closed w/FIX

car Vehicle Data

2000 GMC Sierra 1500 SL

VIN 1GTEK19T9Y
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursOn Accel, Idle

Trouble Codes

P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2000 GMC Sierra 1500 SL

VIN 1GTEK19T9Y
Engine5.3 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMisfire, MIL Lamp On
OccursOn Accel, Idle

Trouble Codes

P0300Multiple Misfire Detected