1994 GMC C1500 Sierra SL 5.0L Lock Up, Early Shift
this truck shifts very early, right in and out of lock up as low as 30kph. speed reading on scanner is eratic jumping from actual speed (35) to 90mph and back. speedo indicates proper speed and doesn't jump. Tried used speed buffer but no change. disconnected ...
FIX posted 3/20/2009
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Vehicle Data1994 GMC C1500 Sierra SL
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Vehicle Data
1994 GMC C1500 Sierra SL
VIN | 1GTDC14H1R |
Engine | 5.0 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Affected | Lock Up, Early Shift |