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2002 chevy 2599 hd 8.1L and allison 1000 series 5 sp auto
2002 chevy 2599 hd 8.1L and allison 1000 series 5 sp auto codes p0700 tcm codes p1779, po727, and po871. changed fluid and both filters and the nsbu. drove fine for about fifteen mins then sent same c… read more
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2015 GMC 2500HD w/ the Allison transmission. Appears to be slipping upon every shift point … read more
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Allison transmission jumps out of gear and I rev it a couple
Allison transmission jumps out of gear and I rev it a couple times and it drops in and stays in low gear and wont shift up....I turn off the engine and sit for a minute and it finally starts to shift.… read more
GM Tech (Cam)
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Transmission seemed to go into neutral flashed a message
Transmission seemed to go into neutral flashed a message that I missed ,coasted to a stop,I then shifted into neutral then reverse then drive .I then checked the fluid level which was ok.I then hooked… read more
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The truck goes into gear but the line under the DR and drive
The truck goes into gear but the line under the DR and drive on the cluster is not lighting up and it won't shift gears stays in first … read more
Chris (aka- Moose)
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700 code wont shift right stock truck,, 05 and no leaks,
If I can, checked and cleaned all grounds, replaced the spin on filter, the mileage is only 167,000 and it's driven gently … read more
Greg
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I have a 2004 GMC duramax with allison transmission. allison
I have a 2004 GMC duramax with allison transmission. allison 1000 It will get stuck in fourth gear and not shift up or down. After clearing the codes it will shift fine one time but as soon as you let… read more
Edward
Edward
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I have a 2005 Chevy 3500HD DURAMAX Dually with the 5sp
I have a 2005 Chevy 3500HD DURAMAX Dually with the 5sp Allison transmission. When I put it in reverse, it won't go. It comes up on my dashboard , '' shift range inhibited", and the R underline is blin… read more
GM Tech (Cam)
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1998 International 4900 Allison MD3560 Original concern:
1998 International 4900 Allison MD3560 Original concern: transmission would not slip at idle. No codes logged. Applying brakes to come to a complete stop would stall the truck. Truck could be restarte… read more
Pete
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Transmissions Allison 5 speed: 2001 Chevrolet 2500 with allison.
2001 Chevrolet 2500 with allison. For last seventy thousand miles has thrown p0700 code when downshift from fifth to forth gear. Only does it pulling trailer, only at random. Has edge programmer on to… read more
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Chevrolet Silverado 2500: 2004 duramax allison trans wont shift
2004 duramax allison trans wont shift replaced internal harness nsbu switch no help. what next… read more
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Chevrolet silverado 2500 HD 4X4: Hi I have a 2001 chev 2500
Hi I have a 2001 chev 2500 HD 4X4 8.1 and Allison trans. While at a stop light tried to drive forward and truck would not move. Reverse works fine. I have had 3 trans in this vehicle I bought it new a… read more
Chris (aka- Moose)
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GM 2500HD Silverado: 2003 Chevy silverado 2500 HD Allison AT
2003 Chevy silverado 2500 HD Allison AT 4wd. 240000 miles. When I start the truck cold or warm the transmission shifts and performs perfectly normal and the cruise control works, then at between a 1/4… read more
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I have a 2001 gmc 2500 hd 4x4 with the 8.1L that has the
I have a 2001 gmc 2500 hd 4x4 with the 8.1L that has the allison transmission. For the past 2 weeks i have heard a somewhat of a clicking in my tranny. This morning on my way to work the tranny threw … read more
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