The Big 3 - auto trans and manuals in diesel pickups
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Joined: Jun 2003
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Even the Duramax FAQ notes that the autos have a number of problems.
http://www.thedieselpage.com/duramax/durafaq.htm
Duramax 6600 FAQ
Q: Any truth to the rumors we're hearing about Allison automatic transmission failures?
A: Like most any currently produced computer controlled automatic transmission, there are lots of individual components that would disable the transmission should one of those parts fail or not function properly. So, yes, there have been a number of Allison problems reported. Most of these were due to minor issues such as fluid leaks, sticky solenoids, loose wiring connectors, and the like. However, no Allison 1000 Series 5-speed automatic has failed because of the load it was asked to pull. This transmission has proven itself to be virtually bulletproof for pulling max GCVW loads (22,000 lbs) in the hottest desert heat.
http://escapees.infopop.cc/eve/forum...1/m/2051021142
We just had a failure of our Allison tranny in our Kodiak chassis MH. We were 300 miles into our trip when the tranny stopped downshifting on hills and we got a tranny maintenance warning light. GM said DO NOT DRIVE IT so we had to have it towed 300 miles back home.
The Allison repair shop ran a diagnostic and it had a number of faults. They dropped the pan and found a very small piece of metal (about the size of half a sew needle) stuck to the solenoid causing it to short out. The flushed it and replaced the fluids and we should be good to go.
The shop said they have seen this from time to time on these transmissions. Usually it is an intermittent problem with the shifting and then goes away only to come back days or weeks later. Once they find the metal and flus
http://www.thedieselpage.com/duramax/durafaq.htm
Duramax 6600 FAQ
Q: Any truth to the rumors we're hearing about Allison automatic transmission failures?
A: Like most any currently produced computer controlled automatic transmission, there are lots of individual components that would disable the transmission should one of those parts fail or not function properly. So, yes, there have been a number of Allison problems reported. Most of these were due to minor issues such as fluid leaks, sticky solenoids, loose wiring connectors, and the like. However, no Allison 1000 Series 5-speed automatic has failed because of the load it was asked to pull. This transmission has proven itself to be virtually bulletproof for pulling max GCVW loads (22,000 lbs) in the hottest desert heat.
http://escapees.infopop.cc/eve/forum...1/m/2051021142
We just had a failure of our Allison tranny in our Kodiak chassis MH. We were 300 miles into our trip when the tranny stopped downshifting on hills and we got a tranny maintenance warning light. GM said DO NOT DRIVE IT so we had to have it towed 300 miles back home.
The Allison repair shop ran a diagnostic and it had a number of faults. They dropped the pan and found a very small piece of metal (about the size of half a sew needle) stuck to the solenoid causing it to short out. The flushed it and replaced the fluids and we should be good to go.
The shop said they have seen this from time to time on these transmissions. Usually it is an intermittent problem with the shifting and then goes away only to come back days or weeks later. Once they find the metal and flus
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Joined: Apr 2007
Posts: 22
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Our Chevy 2500HD work truck is a piece of crap. It squeeks and creeks as the frame and body flexes, it's a pig and can't get out of its own way (but it is a gasser), and the dealer had to install a fan that comes on every hour or so to keep mold from growing under the dash. It's a real gem.....
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Joined: Apr 2006
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From: Alta Loma, CA
I don't know, don't remember what was on my mind at the time.
Maybe because I always hear how great the Cummins is but the truck wrapped around it is a turd I thought I should point out what a piece of crap our GM product is. I have had several GM trucks and this one has had the most problems. Some of the issues are comical.
Maybe because I always hear how great the Cummins is but the truck wrapped around it is a turd I thought I should point out what a piece of crap our GM product is. I have had several GM trucks and this one has had the most problems. Some of the issues are comical.
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