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2000 GMC K3500 Sierra SLE 7.4L Excessive Emissions, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 5/17/2005 6 Replies

lt fuel trim b2 -18 at cruise, -9 at idle. b1 also neg. readings. have been on tech hot line and only one reading seems suspect. maf is 2700hz at idle (gm spect is2000, vantage spec is 2300. at 2500 rpm, 4700hz, spec is 4200hz. have tried reman maf and reads s...

6 Replies Received (View Replies)

  Related Documents & Media  2000 GMC K3500 Sierra SLE

 
Message Closed w/Summary

car Vehicle Data

2000 GMC K3500 Sierra SLE

VIN 1GTHK39JOY
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Fuel Economy, MIL Lamp On
OccursCruise
Misc.4WD, Dully

Trouble Codes

P0175Fuel System Too Lean (Bank 2)
Message Closed w/Summary

car Vehicle Data

2000 GMC K3500 Sierra SLE

VIN 1GTHK39JOY
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Fuel Economy, MIL Lamp On
OccursCruise
Misc.4WD, Dully

Trouble Codes

P0175Fuel System Too Lean (Bank 2)