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2002 gmc envoy_sle
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Discussion Starter · #1 · (Edited)
My 2002 GMC Envoy 4.2 is suddenly not shifting beyond 2nd gear.
I've read some threads here which state this may be a problem with a bad solenoid.

Took the vehicle to a tranny specialist yesterday. Of course they want to install one of their factory rebuilt transmissions for approx $2500.

I explained that-- through research-- i understand it could simply be a bad solenoid.

GARAGE CLAIM: There are two solenoids. One for first. one for 2nd. Neither are throwing codes.

This does not seem in-line with what i've read here. i'd rather not drop $2500 which i don't have, if the problem is likely something inexpensive.

#1 Is it not symptomatic of a bad solenoid that the 4L60E will not shift to 3rd?
#2 What symptoms might i have noticed if it was instead the 3-4 Clutch Pack?
 

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2008 chevy trailblazer_lt
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I know it's been awhile, but I'm experiencing the same with my 2008. 1st and 2nd gear are fine, nothing beyond that.
 

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2005 gmc envoy_sle
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Im having the same problem with 2005 envoy . Yesterday i put in both shift solenoids and tcc solenoid and new filter and fluid. Put it all back together and test drove. Still no difference. I am an auto dealer and have already sold the vehicle. Bad situation! Im trying to help the people that bought it. Dont think it needs a new transmission because it happened all of a sudden. Ive read pages and pages of threads but i am lost and dont know what to do. Reading all these threads just confuses me more. I really need someones help! Thanks
 

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2008 chevy trailblazer_lt
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Mine happens with no warning also. I originally thought about the shift solenoids but if one of them went bad you would get a code for shift solenoid A or shift solenoid B. I was experiencing the same symptoms as everyone else. First and second gear are flawless. Reverse is flawless. But when the transmission tries to shift into third it is like going into neutral. Even if you shift it manually. If you are going slow enough and you put your foot to the floor it will drop back into second gear. Mine is currently at Diablo Formula racing getting the transmission rebuilt. Andy says it it was a very common issue and the 3-4 clutch pack is what the problem is and when he rebuilds them he uses upgraded parts. You could take it to an actual transmission shop and have them put replacement parts in that are off-the-shelf stuff from GM but if you don't upgrade the parts that break, you could be looking at the same issue again in the future. 2500 to $3,000 is is about right for a transmission rebuild
 

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2003 chevy trailblazer_ls
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When the 4l60 trans shifts from 1st to 2nd and then when it tries to go to 3rd the engine just revs up, the 3-4 clutch has failed and the trans needs to be rebuilt. Sorry.
 

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2003 chevy trailblazer_ls
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My 2002 GMC Envoy 4.2 is suddenly not shifting beyond 2nd gear.
I've read some threads here which state this may be a problem with a bad solenoid.

Took the vehicle to a tranny specialist yesterday. Of course they want to install one of their factory rebuilt transmissions for approx $2500.

I explained that-- through research-- i understand it could simply be a bad solenoid.

GARAGE CLAIM: There are two solenoids. One for first. one for 2nd. Neither are throwing codes.

This does not seem in-line with what i've read here. i'd rather not drop $2500 which i don't have, if the problem is likely something inexpensive.

#1 Is it not symptomatic of a bad solenoid that the 4L60E will not shift to 3rd?
#2 What symptoms might i have noticed if it was instead the 3-4 Clutch Pack?
I have been a transmission rebuilder for 35 years. I have never seen a solenoid problem cause a 4l60 to not shift to third. If a solenoid is shorted or open, the computer sees this and locks the trans into third gear, which is fail safe. If the trans shifts from first to second normally but the motor just revs up when it should be in third, the 3-4 clutch has failed.
 

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2005 gmc envoy_slt
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Same Problem

My 2005 GMC Envoy is having the same problem and will not shift from 2nd to 3rd. I have gotten an estimate and it is roughly $2,000 to have the transmission rebuilt. My car has 130,000 miles on it right now, is it worth it to do the repairs if I am wanting to get another 1-2 years out of it? The engine is fine but I have had to do some tire and axle repairs recently. I haven't had any other major problems with it but that worries me going forward that something else could go wrong. Any suggestions would be appreciated. Thanks.
 

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2003 chevy trailblazer_ls
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Mine happens with no warning also. I originally thought about the shift solenoids but if one of them went bad you would get a code for shift solenoid A or shift solenoid B. I was experiencing the same symptoms as everyone else. First and second gear are flawless. Reverse is flawless. But when the transmission tries to shift into third it is like going into neutral. Even if you shift it manually. If you are going slow enough and you put your foot to the floor it will drop back into second gear. Mine is currently at Diablo Formula racing getting the transmission rebuilt. Andy says it it was a very common issue and the 3-4 clutch pack is what the problem is and when he rebuilds them he uses upgraded parts. You could take it to an actual transmission shop and have them put replacement parts in that are off-the-shelf stuff from GM but if you don't upgrade the parts that break, you could be looking at the same issue again in the future. 2500 to $3,000 is is about right for a transmission rebuild
The 3-4 clutch is fried. Needs to be rebuilt.
 

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2004 chevy trailblazer_lt
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I know a guy that runs his own shop and I would trust to do any mechanical work on my vehicles. He specializes in transmissions. He gave me a price of $1350 for a rebuild. I think that price would be hard to beat.
 

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I know a guy that runs his own shop and I would trust to do any mechanical work on my vehicles. He specializes in transmissions. He gave me a price of $1350 for a rebuild. I think that price would be hard to beat.
I had my own shop and have done trans work for 35 years or so. I'm not knocking the guy you know but unless he's just making you a super deal for some reason, one of three things have to be happening.
1. He is not going to make much money on this job.

2. He is not going to replace as many parts as he may should replace or use a substantial amount of used parts.

3. Perhaps you may not have understood all he said. Many times people will say "We can do the job for 1200 and that includes the master overhaul kit and fluid and all the labor". Lots of folks don't realize the master overhaul kit does not contain all the parts needed.

Here is a list of common parts needed to rebuild a 4L60, not in the kit.

Forward sprag
Torque converter
Sun gear shell
Bushings
Bearings
electronic parts
Any broken or damaged parts or pumps, etc.
Also, a valve body kit is recommended.

Again, not knocking you or this guy, but this is just kind of what happens. I used to work for a guy that did all of this and it did not matter what was actually wrong with the trans, he'd try to sell them all kind of parts if they needed them or not.


Edited to add: I am NOT saying he will do this!
Just have a clear understanding of it all. I hope he does a bang up job for the money!


Also, there is no "special place" to get parts real cheap that only he knows about, so the parts cost us all pretty much the same thing. Normally before I could commit to a firm price I would tell the customer that I had to tear it apart to see what all it needed to be exact on cost.
 

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2008 gmc envoy_sle
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I had my own shop and have done trans work for 35 years or so. I'm not knocking the guy you know but unless he's just making you a super deal for some reason, one of three things have to be happening.
1. He is not going to make much money on this job.

2. He is not going to replace as many parts as he may should replace or use a substantial amount of used parts.

3. Perhaps you may not have understood all he said. Many times people will say "We can do the job for 1200 and that includes the master overhaul kit and fluid and all the labor". Lots of folks don't realize the master overhaul kit does not contain all the parts needed.

Here is a list of common parts needed to rebuild a 4L60, not in the kit.

Forward sprag
Torque converter
Sun gear shell
Bushings
Bearings
electronic parts
Any broken or damaged parts or pumps, etc.
Also, a valve body kit is recommended.

Again, not knocking you or this guy, but this is just kind of what happens. I used to work for a guy that did all of this and it did not matter what was actually wrong with the trans, he'd try to sell them all kind of parts if they needed them or not.

Just have a clear understanding of it all. I hope he does a bang up job for the money!


Also, there is no "special place" to get parts real cheap that only he knows about, so the parts cost us all pretty much the same thing. Normally before I could commit to a firm price I would tell the customer that I had to tear it apart to see what all it needed to be exact on cost.
good info.

the original poster, the price and the deal, did sound too good to be true.
 

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2006 chevy trailblazer_ls
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I have been a transmission rebuilder for 35 years. I have never seen a solenoid problem cause a 4l60 to not shift to third. If a solenoid is shorted or open, the computer sees this and locks the trans into third gear, which is fail safe. If the trans shifts from first to second normally but the motor just revs up when it should be in third, the 3-4 clutch has failed.
So in order to fix this problem i need to replace 3 and 4 clutch?
 

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So in order to fix this problem i need to replace 3 and 4 clutch?
There will be more to it than that. Most likely it does need to be completely rebuilt. All I was trying to say to you in the post I made is that you just need to be aware of what you are getting for your money.
 

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There will be more to it than that. Most likely it does need to be completely rebuilt. All I was trying to say to you in the post I made is that you just need to be aware of what you are getting for your money.
Good to know, yeah I have a small transmission fluid leak coming out of a silver looking disc underneath my trailblazer 06. I usually check the fluid level and add a quart when needed.
I'm not sure if there gear issues or the transmission is just low on fluid due to the small leak.
It's tricky reading the dipstick...I usually let the vechile sit on a flat surface, let the engine get to operating temperature and while the car is still running in idle, I check it. And suggestions on checking the tranny dipstick?
 

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2003 chevy trailblazer_ls
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Just check it like you said that would be good. On your leak, you really should get that fixed. Low fluid causes transmissions to burn up.
 

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2006 chevy trailblazer_ls
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Good to know, yeah I'm going to do a filter change and clean transmission pan, New gasket to. I try getting a good dipstick reading but it's always over... Not sure if I'm doing the procedure to reading tranny stick right or not.
 

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2003 chevy trailblazer_ls
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A little overfull will not hurt anything.

One thing to remember when adding fluid to a transmission is that the fluid you pour down the dipstick tube floods the inside of the dipstick tube making the inside of the tube have fluid clinging to it.

Putting the dipstick in and checking the fluid will most likely result in a false high reading because the dipstick will contact the inside of the dipstick tube and fluid clinging to the inside of the tube will get on the dipstick making it look more full. They way to check it after adding fluid is to take several readings over the course of a minute or two giving this "clinging" fluid time to drip down to the pan. Also, one way to see what the actual level is when this happens is look at both sides of the dipstick. Usually only one side will show the false reading because that was the side that contacted the inside of the tube.
 

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Thanks miketexas, I'm going to give it a shot tomorrow because I need a proper reading. I need to add lucas to it, been noticing it slipping in high gear and engine light came on.
Transmission component slipping means the the tcc regulator valve or isolator valve in the valve body is worn out and the converter clutch is slipping.
 
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