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Transmission

MrBuck69

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MrBuck69 Enthusiast

MrBuck69

Posted
Posted

I have a 2000 tahoe with 107k with a 5.3 and when I tried to make a u-turn the other day, I couldn't move. I heard some grinding and scraping noises from under the truck like something was trying to catch. After putting it in park and shifting back to drive twice, the truck finally decided to move. Now I hear a rattle when I first pull off from a stop but it goes away once the truck shifts into 2nd gear. While backing up I hear a loud scraping noise and when I'm on the highway and it shifts into overdrive I hear a something like a roar/ grinding noise. This noise goes away when I take my foot off the gas, as soon as I accelerate it comes right back. I got the P1807 code about 2 months ago but the light went out on its own. Should I look forward to a rebuild? Dealer test drove and told me not to sweat it. They want $2,600 to replace it with a 3 yr, 100K warranty ... kinda steep for me now but love the truck. I'm in NYC and have no idea who to trust for this type of job. Give me some opinions. Do these transmissions tend to leave people stuck in the middle of the road or will they act up enough to make me fix it before I get stuck?

snoman Senior Enthusiast

snoman

Posted
Posted
Can't exclude the possibility of it being the rear Diff or Transfer case...

 

 

 

 

 

My nickle is on the tranny, it could be the torque converter or the one way sprag roller clutches going bad. (the fact that it changes in second points to roller clutch problems) and there may be a planitary gear set issue too. Immedate attention is required here. It is not good.

ken1mod Senior Enthusiast

ken1mod

Posted
Posted
I have a 2000 tahoe with 107k with a 5.3 and when I tried to make a u-turn the other day, I couldn't move. I heard some grinding and scraping noises from under the truck like something was trying to catch. After putting it in park and shifting back to drive twice, the truck finally decided to move. Now I hear a rattle when I first pull off from a stop but it goes away once the truck shifts into 2nd gear. While backing up I hear a loud scraping noise and when I'm on the highway and it shifts into overdrive I hear a something like a roar/ grinding noise. This noise goes away when I take my foot off the gas, as soon as I accelerate it comes right back. I got the P1807 code about 2 months ago but the light went out on its own.  Should I look forward to a rebuild? Dealer test drove and told me not to sweat it. They want $2,600 to replace it with a 3 yr, 100K warranty ... kinda steep for me now but love the truck. I'm in NYC and have no idea who to trust for this type of job. Give me some opinions. Do these transmissions tend to leave people stuck in the middle of the road or will they act up enough to make me fix it before I get stuck?

 

 

 

 

 

This may sound strange but I have been aroun lots of Fords and Chevys when I was in business. Fords quit at the worst time and place. Chevys bring you home and quit in the driveway.

 

Ken

ChevyTech007 Enthusiast

ChevyTech007

Posted
Posted

You have a low reaction carrier in the trans that is bad. It can be rebuilt for cheaper than $2600 but will not have as good warranty. Trust me, it will only get worst. If I disassembled you trans and showed you what was wrong, you would not believe you were driving it around. The key here is the noise going away when shifting into 2nd. Seen it many times before.

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