Last post on Oct 25, 2013 at 7:32 AM
You are in the Chevrolet Blazer
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Chevrolet Blazer, Transmission, SUV
#137 of 384 Re: Chevy Blazer 2002 - Interesting problem 4L60E [jlflemmons]
Feb 07, 2008 (7:04 am)
Dealer checked for codes, nothing there. So, dumped the programming from the PCM and did a fresh upload with all the current updates from GM. Shifting is much crisper, but the engine went into rev limit just as the tranny shifts out of first under WOT. I think I will go ahead and do the fluid and filter change this weekend and go from there. The dealer checked the extended warranty and says if the tranny needs a rebuild, it is covered. Nice to have that safety net!
#138 of 384 Re: Chevy Blazer 2002 - Interesting problem 4L60E [jlflemmons]
Feb 07, 2008 (8:25 pm)
All is happy with the tranny. Dropped the pan and found only the typical fine residue. The pan had not been off before, and the original filter was still there. One thing I found interesting was I expected to only need five quarts to refill. I know not to over fill, so I checked, rechecked, and checked again with the transmission warmed up and idling in park, and it took an extra 1/2 quart to put the level in the hash marks.
The only thing I could think of was that when I was under it, I had it way up on jack stands and may have gotten some of the fluid from the TC. Whatever, it shifts smooth as butter, with no slipping.
#139 of 384 Re: Chevy Blazer 2002 - Interesting problem 4L60E [jlflemmons]
Feb 09, 2008 (4:52 pm)
Well glad it worked out for you...you were probably right..a partially restricted filter, low fluid, missing seals...could have been any of them.
#140 of 384 Re: Chevy Blazer 2002 - Interesting problem 4L60E [rhtrans]
Feb 09, 2008 (6:14 pm)
Ah, but with the transmission holding in gear, a new problem was uncovered, and resolved this morning. I will post symptom and solution in another thread. Engine related.
#141 of 384 Re: 97 jimmy will not shift automatically [my97jimmy]
Feb 10, 2008 (11:39 am)
Keith, Your message was very useful and timely for me. My 99 Blazer had been experiencing shifting irregularities for several weeks, and today the problem became severe... when starting in 'Drive' position, the car would start out in 3rd or 4th gear, and continued to do so after repeated stops/starts. I assumed the worst, but did a Google search, found your message (first on the list), disconnected the battery, and 15 minutes later the transmission was operating perfectly.
Thanks for the tip
#142 of 384 Re: 97 jimmy will not shift automatically [motoroller]
Feb 10, 2008 (12:47 pm)
Glad it helped you with your transmission problem. It's amazing that it was that simple, wasn't it?
#143 of 384 Slipping Transmission
Feb 11, 2008 (9:54 pm)
Hi i recently purchased a 1994 GMC JImmy and have some Tranny problems with it, when i am excelerating up to highway speeds or trying to pass someone my engine will down shift into a lower gear trying to go faster then it will slip out of gear my father told me the guy i purchased it from had the transmission replaced 2 and rebuilt the 2 replaced tranny should i just buy a new one for 4 grand, get it rebuilt, or see if the previous owner has the warranty?
#144 of 384 Re: 97 jimmy will not shift automatically [my97jimmy]
Feb 12, 2008 (5:58 am)
i have tried disconnecting the battery when it first cated up and i have done it 6 or 7 times since then with mine it didn't make a difference
thanks for the tip
#145 of 384 Re: 97 jimmy will not shift automatically [psycodad]
Feb 12, 2008 (6:14 am)
To bad it didn't work for you. It worked for me for about 2 years but with 180K it's time to replace the tranny. If you are mechanically inclined, you can get a rebuilt tranny (with 3 year warranty) for around $1200 and put it in yourself. That's what I did. If not, I would find a mechanic that will replace the tranny for you. I wouldn't recommend having a tranny shop repair it. Just read all the horror stories here about repaired trannys. Good luck, Keith
#146 of 384 Re: 97 jimmy will not shift automatically [my97jimmy]
Feb 13, 2008 (8:58 am)
my jimmy has 168000 and sometimes the trans will shift perfectly and others it wont a trans repair shop said that it is an electrical prob. low voltage and i checked that out when it was acting up and i was definately under the 12 volts i was supposed to have i would like to try putting a jumper wire with 12 volts into the trans system and see what happens but i also hate to burn something out