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Truck revs higher when shifting into 3rd

masonbid

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masonbid Enthusiast

masonbid

Posted
Posted

So the last few weeks I've been having an issue when my truck was shifting into 3rd. It would rev considerably higher than it should have. I thought maybe the tune from my Diablo Predator was causing the issue but I just took off the tune and drove it around again. The revs are still up there when it tried to shift. I can get it to shift down if I let off the gas.

 

Any ideas what may be the culprit? From what I've found googling around, some people say it may be the servo or something more severe and my tranny may be on its way out.

 

I'm taking it down to a reputable shop Monday morning and they said if they can't fix it they will send it across the street to the tranny shop.

 

Also, on the weekend I was out camping and towing my little tent trailer around and the truck was not doing the high revs. I was driving in tow haul mode but didn't notice any overally high revs other than what tow haul does.

masonbid Enthusiast

masonbid

Posted
  • Author
Posted

Well I dropped the truck off this morning. They will be taking it for a test drive to try and replicate the issue and then they try to diagnose what the issue may be. Hopefully is doesn't end costing too much...

 

I'll keep you all posted on the repair.

nickvrebel Senior Enthusiast

nickvrebel

Posted
Posted

on a 2006 1/2 ton? that would mean you have the 4L60e.... you are losing 3rd gear. Your transmission is going to fail soon, this is not an uncommon symptom of a 4L60e failing.

oldscsc Enthusiast

oldscsc

Posted
Posted

3/4 clutch is probably toast..along with the band and everything else from operating in the nasty clutch particle-filled fluid and miles and miles of normal wear.

masonbid Enthusiast

masonbid

Posted
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Posted

Yup sounds like my wallet will be getting thinner. The tranny shop told me the fluid looked burnt and something about a spline. They are going to drop the pan tomorrow and see what else they find. I'm not too shocked from all the threads i've read about this. At least it's at a reputable shop and hopefully they stay that way.

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

tell them to stop wasting your money ,dropping the pan does nothing except opening your wallet ,,,

 

 

tranny is done ,,

masonbid Enthusiast

masonbid

Posted
  • Author
Posted

They couldn't tell me what the turn around is yet but 2-3 days as it looks to be a major problem. The tech who drove me back told me that it's a simple tranny to fix and with lots of part readily available. I will wait and see what happens...

GuyGene Enthusiast

GuyGene

Posted
Posted

If you have a good shop, it should be okay. I'm fortunate to have a great transmission rebuilder. My last rebuild was about $1,500. Make sure they use the best parts. I had a rebuild done one time out of town by a shop recommended by a local friend, and they didn't use the Teflon coated thingamabob and transmission went out on way home! Took it to my local shop, and he showed me the non Teflon part and said they always use the better part. It was covered and I didn't have to pay again, just a hassle. Have them use best parts, even if it costs a bit more.

masonbid Enthusiast

masonbid

Posted
  • Author
Posted

Good the call today with the estimates. My tranny was pretty much going to die any day soon. 3 and 4 clutch was gone, 2/4 band was done and wearing into the drum, and something about a pin holding onto something for reverse.

The estimate to rebuild to stock with oem parts was $3100 and the rebuild with all the upgraded parts, aluminum valves, upgraded drum, new brass parts, etc. was $3500. For the extra $400 on a $3k tab i decided to open my wallet a bit more. Should be built and back on the truck tomorrow afternoon or friday morning.

dsmmace Enthusiast

dsmmace

Posted
Posted

Sounds about right with labor. At least in Canuck dollars.

Carder09 Senior Enthusiast

Carder09

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That seems outrageous to me,for that, I think you could get a seriously built tranny that could handle serious horsepower and torque even if you don't plan on adding any performance parts!

oldscsc Enthusiast

oldscsc

Posted
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Yep...you just got 4L60'd. Obviously prices vary depending on location and shop, but that seems a little high.

 

For what its worth, I had my trans rebuilt last summer. 5 pinion planetaries, high energy clutches and band, worked over valve body, TransGo converter...I told them to build it for a mild 6.0. Cost $1800.

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