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my 04 2wd has 79,xxx on it and in 4th and sometimes in 3rd the rpm's will run up then down up and down, it really gets irritating on long drives:argg:, it has been tuned/programmed (done before i got it) so dont know if that matters. just sounds like the converter is locking then unlocking over and over again. My z71 doesn't do this. so any ideas??
may be a bad temp sensor in the tranny...mine was doing the exact same thing...it would read 120 degrees and run at normal rpms, then the temp sensor would tell the computer it was -30 degrees and it would then jump the rpms up, trying to warm it up(thinking its cold)
my trans temp gauge reads fine never jumps around or varies.
Likely 3-4 clutches burning up.
What?!?! With 80k on it??
my z71 is frigging sunk in creeks for ours at a time and held wot bout 90% of its life and has 200k on it and never misses a lick.
Is there not anything else? Maybe even somethin i could try to stop it.
Could also be a slipping band. That's my vote. How's your 1-2 shift? Any delay/bump involved?
1-2 shift barks the rear tires, even when your not on it. so really strong shift no delay or slippin there.
I get them in for 3-4 clutches and 2-4 bands (as well as broken sprags and sunshells) with under warranty with less than 30K miles. There are always runs of components that have problems. The 05-06 3-4 clutch problems are usually caused by poor machining on the pump where the input housing goes through. This wears the sealing rings on the input housing and lowers holding pressure on 3-4. Just an example.
well... then should I get a 4l60 outta a 03-04 then?
Thanks for all the help
I would fix it if it's stock and unmolested. Never know what you're gonna get with a used or previously rebuilt unit.
I agree, just try and fix yours. Getting a used one is a gamble.
Chris
hey gas you said 05-06 year was poorly built.. mine is an 04 so... i guess you were just givin me an example??
I see everyone havin the same stuff put in their trannys as far as all the goodies so If I keep this thing and get my boy to build my trans what all can or should I have done other than a stall of course?
I was mentioning certain problems with those years. There are other issues before and after. Ask someone with a 97 or 98 how many reaction sun shells they busted...
nah thanks im depressed enough
Mine is doing the same thing. And I just had the tranny rebuilt.