4l60e woes
02-02-2007, 03:16 PM
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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; 02-02-2007 at 11:51 PM.
02-02-2007, 06:08 PM
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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.
02-02-2007, 06:11 PM
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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?
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02-03-2007, 10:25 AM
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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
02-03-2007, 11:12 PM
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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
02-04-2007, 10:37 AM
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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; 02-15-2007 at 10:46 PM.
