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1997 GMC Yukon SL 5.7L Excessive Emissions, Poor Fuel Economy
Posted to GM Driveability on 3/26/2004 7 Replies

Gmers,

Have this truck running good, Had ECM reprogrammed to aliviate TCC lockup early (Was eating valve bodies, GMwebsite via vin update, delays until 60ish now) and runs better from this, although gas milage suffered. I dont have a problem with this, but th...

7 Replies Received (View Replies)

  Related Documents & Media  1997 GMC Yukon SL

 
Message Closed w/FIX

car Vehicle Data

1997 GMC Yukon SL

VIN 3GKEK18R3V
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Fuel Economy
Misc.2 Dr 4WD
Message Closed w/FIX

car Vehicle Data

1997 GMC Yukon SL

VIN 3GKEK18R3V
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Fuel Economy
Misc.2 Dr 4WD