4l60e woes
Thread Starter
Teching In
Joined: Feb 2007
Posts: 27
Likes: 0
4l60e woes I'm having trouble with my 2000 GMC Sierra 1500. When it down shifts from 4th or 3rd at about 80 km/hr, it revs to 5400-5500 for a second to 2 seconds, before grabbing. When this happened, I took to a trans shop. They hooked it up to a scanner and , shaking their head sadly, said, "Yup, it needs re-building." So, $3000 later, the trans does the same thing. The shop pulls it 3 times and replaces different parts, this on top of the rebuild. Same problem. The tranny guy says that sometimes a bad chip, tune, etc. can cause this. So I get a tune from Nelson Performance. Same problem. I get a stock tune. Same problem. The truck shows no codes, so neither the trans shop or GM knows what to do. HELPPPPPPP!! Does any one have any suggestions? Thanks for reading this far, Michael
Last edited by lowburb; Feb 2, 2007 at 11:51 PM.
is the grab like a rev followed by a sudden bump it may be the input sprag I have seen them do that and holding them in your hand feel perfect , I do not think its a tuning issue .
__________________
Thread Starter
Teching In
Joined: Feb 2007
Posts: 27
Likes: 0
http://web.camaross.com/forums/showt...46#post4384446
This guy was having the same problems, so I e-mailed him. He said that the tech figured the solenoid was bad. They did a rebuild and changed the solenoids and it has been good ever since. I went to the trans shop today and he said he had changed all the solenoids, too.
This guy was having the same problems, so I e-mailed him. He said that the tech figured the solenoid was bad. They did a rebuild and changed the solenoids and it has been good ever since. I went to the trans shop today and he said he had changed all the solenoids, too.
well I would say the input sprag is a good possibility, I would ask if it was replaced. and no it isnt good for the trans, But I do want to ask ae you sure it isnt kicking all the way down to 2 then back to third or is it a free rev?
__________________
Trending Topics
i would have to go with input sprag letting go , there are many possibilites but that most likley , now have you tried kickdowns in the d position to see if you can make it do anything like that
__________________
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo so if you pull it down and drive it in 3rd some would call it and it still does it then its not the forward sprag ,If i understand you correctly
1-2-3-4
1-2-d-od
!
this position D
1-2-3-4
1-2-d-od
!
this position D
__________________
well its not the sprag I would guess its going all the way to first for a moment try a TPS maybe thats my best guess 1 would feel like neutral in that case
__________________
Thread Starter
Teching In
Joined: Feb 2007
Posts: 27
Likes: 0
I did change the TPS in September. I haven't checked it since then. The original was really worn, so I thought I had found the problem. However, it hasn't gone away.The trans shop thought it was trying to go to first, now that you mention it. I remembered that, when I was towing, I thought I would downshift manually to avoid the high revs but it still flared up, although not as long.Thanks for letting me pick your brain, Michael
lol dont pay that much for a rebuild.....I made that mistake once paying 3200 dollars to replace synchros on my t56 i used to have....lol I got back from iraq and didnt have much time.....lol didnt know **** about cars either.......
Check out performabuilt......lvl2 4l60e's are good for 700rwhp and have a 1 yr warrenty......and are a shitload cheaper than that
Check out performabuilt......lvl2 4l60e's are good for 700rwhp and have a 1 yr warrenty......and are a shitload cheaper than that
Thread Starter
Teching In
Joined: Feb 2007
Posts: 27
Likes: 0
Yes, I made that mistake. I was in a hurry (only had a week) and paid a shop to do it. I'm still on warranty, so I want to get the problem solved. It especially pisses me off that I paid the money to fix a problem and it was never solved. I wish I could go back and start over. I usually do my own repairs and would have loved to install a performabuilt tranny.
Last edited by lowburb; Feb 15, 2007 at 10:46 PM.
well that or some strange valve body issue but I would be looking at elecrical issues first
__________________
