2003 GMC Sierra

REDNECK447

MEMBER
2003 GMC SIERRA
V8
4WD
AUTOMATIC
43,000 MILES

If I accerlerate fast the truck will act as if it was in netural but the truck stays at the same pace I was going before. But the rpms are at the max and the truck wont accerlerate any faster. If I accerlate at a slower rate the truck will get up to as fast as I want. But if I try to pass a car my truck will stop accerlating and will just stay at speed I was at before and will go to my max rpms till I let off the gas and wait till my rpms are at about 2-3. AFter my rpms are at about 2-3 I can slowly get up to speed. This happens at any speed. So im thinking its not my shifting cable being stretched out. I don't go ruff on my truck either.

6 Replies

JACOBANDNICKOLAS

MECHANIC
108,217 POSTS

Have you checked to make sure the transmission fluid is full? Has a check engine light come on?

Honestly, it sounds like the clutches are slipping which may require a general rebuild. Let me know the answers to the questions.

Joe

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Saturday, June 20th, 2009 AT 9:43 PM

REDNECK447

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11 POSTS

There is no check engine light.

And how much do u think it would cost to get that fixed if the clutchs are slipping.

Idk if this means anything but my door lights stoped working?

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Saturday, June 20th, 2009 AT 9:49 PM

JACOBANDNICKOLAS

MECHANIC
108,217 POSTS

I don't think they are related. I would like you to take the vehicle to a good transmission tech to have him test drive the vehicle. If it does need a general rebuild, I would estimate around 2K for it based on where you live. I am recommening a tech drives it to comfirm what I am saying.

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Saturday, June 20th, 2009 AT 11:43 PM

REDNECK447

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11 POSTS

Oh ok. Thank you for the help. Is it safe to drive my truck even with that problem or should I stop driving it till io get it fixed.

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Sunday, June 21st, 2009 AT 9:42 AM

JACOBANDNICKOLAS

MECHANIC
108,217 POSTS

I would recommend having it checked. You could cause more damage to other components by driving it. Plus, if you need to accelerate quickly to avoid an accident, you may not be able to. That concerns me more than anything.