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2500hd started acting stupid....

J

jose bagge

Well-known Member
So...after the disaster with the Suburban, my 2500 HD started acting stupid- seemed to accelerated from a stop thru 3rd gear, then held 3,000 RPM and delayed the 3-4 shift. Thought sure I had a trans problem, and Allison's ain't cheap. Googled it, and one guy said it was a "defueling" problem rather than a trans problem.
Swapped out the fuel filter, and now she runs like a striped ape! I guess as the Duramax runs out of fuel and powers down, you keep your foot in it longer and it delays the shift? Anyway- just goes to show, it ain't always what you think it is!
 
Isn't google wonderful! I had a battery disconnected on an unfamiliar vehicle the other day. Saw 2 days later that the clock on the radio was not set-I tried several things, nothing worked. Googled it, set clock! Greg
 
You have got to be kidding, setting clock, fuel filter, manufacturers computer controls are trying to be too helpfull. If they were more helpfull they should tell us the problem instead of creating a situation where you have to quess to fix it.
 
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