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1998 GMC K2500 Sierra SL 5.7L Poor Fuel Economy
Posted to GM Driveability on 10/13/2007 19 Replies

shop says knock sensor is at fault after 2 weeks of testing . no codes, only drivability isssue is noisy(lazy) lifter since engine rebuild . has anyone else ever seen a knock sensor pass all tests and yet cause this problem shop says lifter is not causing this...

19 Replies Received (View Replies)

  Related Documents & Media  1998 GMC K2500 Sierra SL

 
Message Closed w/Summary

car Vehicle Data

1998 GMC K2500 Sierra SL

VIN NONE VINR
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / vortec
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursAlways
Misc.Hd Truck New Engine
Message Closed w/Summary

car Vehicle Data

1998 GMC K2500 Sierra SL

VIN NONE VINR
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / vortec
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy
OccursAlways
Misc.Hd Truck New Engine