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Old 12-09-2012, 07:39 PM   #1 (permalink)
2001dg
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2001 trans problems

Ok to start off truck has 200,000 on it, 5 speed allison, I was driving it Friday all ok, stopped at the store went back out and the trans was slipping and when it downshifts between 2nd and 1st it feels like someone has run into the back of my truck. It seems like it is idling fast, the wait to start light stays on longer even when engine is warm, this all happened when I parked at the store. I took it to the trans guy he reset the trans and told me it would have to relearn how I drive. Well it stopped slipping but it still hits extremly hard when it shifts from 2nd to 1st. Anybody have any ideas ?
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Old 12-09-2012, 07:51 PM   #2 (permalink)
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did you hit the tow/haul switch my 06 shifts hard from 2nd to 1st when in tow/haul
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Old 12-09-2012, 07:54 PM   #3 (permalink)
2001dg
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Quote:
Originally Posted by 295dmax View Post
did you hit the tow/haul switch my 06 shifts hard from 2nd to 1st when in tow/haul
No just had it in D
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Old 12-09-2012, 09:10 PM   #4 (permalink)
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When was the last time you changed your fuel filter?
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Old 12-09-2012, 09:10 PM   #5 (permalink)
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Also, Can you please fill out your signature line so we know what mods, if any, you have done to your truck. Thanks
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Old 12-10-2012, 12:12 AM   #6 (permalink)
2001dg
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completely stock and I change the fuel filter about 15,000 miles ago
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Old 12-10-2012, 12:34 AM   #7 (permalink)
Gunrok 02 LB7
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transmission "bump" when coming to a stop... Post #4. Slip joint might need a little grease also, what cab/bed configuration is your truck?
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Old 12-10-2012, 09:35 AM   #8 (permalink)
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First things first, change your fuel filter. That should be done every 10-15k miles.

Like Gunrok stated, remove your drive line and grease the splines. They get dry over time and can cause that "pop" feeling when slowing down or accelerating.
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Old 12-10-2012, 10:45 PM   #9 (permalink)
2001dg
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Quote:
Originally Posted by Gunrok 02 LB7 View Post
transmission "bump" when coming to a stop... Post #4. Slip joint might need a little grease also, what cab/bed configuration is your truck?
Thanks,
2500 HD fleetside 6.5ft

Last edited by 2001dg; 12-10-2012 at 10:46 PM.
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Old 12-10-2012, 11:42 PM   #10 (permalink)
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With it getting colder, ie...winter onsetting, now would be a fine time to ensure that the fluid level is sufficient.
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