2005 GMC Sierra 2500 HD SLE 6.0L Late Shift
One for you GM Tranny Guys. This Sierra with 4L80 and 4WD was brought to tranny shop with loss of reverse when it gets hot. The builder put boost valve for reverse issue. Now it has reverse but you have to wind it up to 17mph before it will shift 1-2 and i...
FIX posted 10/12/2020
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Message Closed w/FIX
Vehicle Data2005 GMC Sierra 2500 HD SLE
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Message Closed w/FIX
Vehicle Data
2005 GMC Sierra 2500 HD SLE
VIN | 1GTHK29U45 |
Engine | 6.0 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Affected | Late Shift |