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1997 GMC C1500 Sierra GT 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, MIL Lamp on
Posted to GM Driveability on 8/3/2009 9 Replies

Help,, a good customer bought this from a family member and had the transmission replaced. The vehicle runs poor, shift times are wrong, and ck. engine light is on for TPS out of range. Pulled up on Mitchell and backprobed wiring. No 5 volt reference present a...

9 Replies Received (View Replies)

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car Vehicle Data

1997 GMC C1500 Sierra GT

VIN 1GTEC14W3V
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, MIL Lamp On
OccursAlways
Message Closed w/FIX

car Vehicle Data

1997 GMC C1500 Sierra GT

VIN 1GTEC14W3V
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, MIL Lamp On
OccursAlways