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2005 GMC Sierra 2500 HD SLE 6.0L Late Shift
Posted to GM Transmission on 10/9/2020 8 Replies

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...

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  Related Documents & Media  2005 GMC Sierra 2500 HD SLE

 
Message Closed w/FIX

car Vehicle Data

2005 GMC Sierra 2500 HD SLE

VIN 1GTHK29U45
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedLate Shift
Message Closed w/FIX

car Vehicle Data

2005 GMC Sierra 2500 HD SLE

VIN 1GTHK29U45
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedLate Shift