Rhines
TYF Newbie
Good Evening!
I have been an official lurker here for about a year now { since i bought my truck } and i have found lots of awesome info from many threads i have searched from great contributors..thank you!
Recently i have run into a trans issue on my denali { 173,000 miles ) which after lots of searching and diag im pretty certain i have the 3-4 clutch issue going on. came off highway after 2 hours of 65-75 to exit, bottom of ramp starter to get to the 45 mph mark and noticed 3rd was spiking like a clutch going { ex 5 spd guy here, have had some clutches go bad in past } let off throttle it shifted but as i added throttle it would slip again. pulled over check fluid, was level and had a slight dark red tint to it. was not dark before my trip up north. i check all levels and conditions of dipstickable { a word? } fluids before 2+ hour trips.
Trans never got over 200, i was driving up to farmington ME so there are some grades but i only had passengers { 4 } no trailer or large cargo. Dropped pan and filter, nothing huge in pan or on magnet just alot of graphite looking paste { mushed shavings? } replaced fluid ran some lucas into it drove out of driveway immediate symptoms again, drove 5 miles checked fluid level all was well looked a little pinker no burnt smell.
After what ive done,and read im leaning towards burnt clutches in 3-4. i thought maybe shift solenoids, but manual 1, manual 2 work all the way up to red line with zero slipping. manual 3 slips about 30 MPH, In D, 1 and 2 shift perfect but when 2-3 shift comes it slips like its in nutrul if i let off itll catch but wont hold under WOT until i romp on it hard and then it catches for a slip second and nothing.
Dropped many trans { subaru, chevy, volvo } so im not worried about the process of removal - but for sake of any wisemen around that have seen this and it WASNT 3-4 clutches { valvebody, electrical, VSS issue?} any input would be greatly appreciated. And, if it is a trans i plan on taking lots of pics and making a writeup as a contribution back to the site, i LOVE my denali and i know others do as well!
mods include, full kn intake, corsa touring exhaust.
any help is appreciated before i drop this thing and replace it, rebuilding the 4l65e at this point schedule wise would be tough, a swap in would be much faster for myself.
Thanks!
Ron
I have been an official lurker here for about a year now { since i bought my truck } and i have found lots of awesome info from many threads i have searched from great contributors..thank you!
Recently i have run into a trans issue on my denali { 173,000 miles ) which after lots of searching and diag im pretty certain i have the 3-4 clutch issue going on. came off highway after 2 hours of 65-75 to exit, bottom of ramp starter to get to the 45 mph mark and noticed 3rd was spiking like a clutch going { ex 5 spd guy here, have had some clutches go bad in past } let off throttle it shifted but as i added throttle it would slip again. pulled over check fluid, was level and had a slight dark red tint to it. was not dark before my trip up north. i check all levels and conditions of dipstickable { a word? } fluids before 2+ hour trips.
Trans never got over 200, i was driving up to farmington ME so there are some grades but i only had passengers { 4 } no trailer or large cargo. Dropped pan and filter, nothing huge in pan or on magnet just alot of graphite looking paste { mushed shavings? } replaced fluid ran some lucas into it drove out of driveway immediate symptoms again, drove 5 miles checked fluid level all was well looked a little pinker no burnt smell.
After what ive done,and read im leaning towards burnt clutches in 3-4. i thought maybe shift solenoids, but manual 1, manual 2 work all the way up to red line with zero slipping. manual 3 slips about 30 MPH, In D, 1 and 2 shift perfect but when 2-3 shift comes it slips like its in nutrul if i let off itll catch but wont hold under WOT until i romp on it hard and then it catches for a slip second and nothing.
Dropped many trans { subaru, chevy, volvo } so im not worried about the process of removal - but for sake of any wisemen around that have seen this and it WASNT 3-4 clutches { valvebody, electrical, VSS issue?} any input would be greatly appreciated. And, if it is a trans i plan on taking lots of pics and making a writeup as a contribution back to the site, i LOVE my denali and i know others do as well!
mods include, full kn intake, corsa touring exhaust.
any help is appreciated before i drop this thing and replace it, rebuilding the 4l65e at this point schedule wise would be tough, a swap in would be much faster for myself.
Thanks!
Ron