× 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 Chevrolet K3500 7.4L Hesitation, Misfire, MIL Lamp on
Posted to GM Driveability on 12/4/2009 28 Replies

Gentleman, I have a difficult problem here. the truck misses and lacks power under heavy acceleration. On scanner it shows constant misfire on #3 cylinder, yet only code present is p0171. When I look at fuel trim it shows only 5% long term fuel trim on bank 1....

28 Replies Received (View Replies)

  Related Documents & Media  2000 Chevrolet K3500

 
Message Closed w/Summary

car Vehicle Data

2000 Chevrolet K3500

VIN 1GCHK33J6Y
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsHesitation, Misfire, MIL Lamp On
OccursAlways
Misc.P0171

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
Message Closed w/Summary

car Vehicle Data

2000 Chevrolet K3500

VIN 1GCHK33J6Y
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsHesitation, Misfire, MIL Lamp On
OccursAlways
Misc.P0171

Trouble Codes

P0171Fuel System Too Lean (Bank 1)