Transmission Valve body failure!!!

[TheShark]

So.... my transmission just failed at 62,000. Of course. 2k miles out of powertrain warranty. Had a 5 day stretch of weather near or over 100°. Initially, I had lost reverse. Figured I'd attempt to save some money, so I did a fliud and filter change. I could only squeeze in about 6.5 quarts. Did torque converter stalls to get to desired oil temp, then got maybe 3/4 of a qt in. What a PITA! Gotta drop exhaust to have enough room for pan removal. Reassembled. Took it off the lift, and voila! I had reverse! Backed out of the shop, put it in Drive and..... Nothing

It's possible it's just low on fluid now, and the initial problem was dirty/boken down fluid, but really I have no idea. No codes. I had it towed to a transmission specialist shop today. They are a very busy shop and most likely won't even look at it until Monday. The fact that it's a short week doesn't help my case. Hopefully it's just a bad valve body or something like that. That could save me thousands. This is a quality shop, and they will diagnose it free of charge. I'm giving them the work anyway, but that's a sign of a good business.

Wonder how much this is going to cost?

 

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[phobby]

So.... my transmission just failed at 62,000. Of course. 2k miles out of powertrain warranty. Had a 5 day stretch of weather near or over 100°. Initially, I had lost reverse. Figured I'd attempt to save some money, so I did a fliud and filter change. I could only squeeze in about 6.5 quarts. Did torque converter stalls to get to desired oil temp, then got maybe 3/4 of a qt in. What a PITA! Gotta drop exhaust to have enough room for pan removal. Reassembled. Took it off the lift, and voila! I had reverse! Backed out of the shop, put it in Drive and..... Nothing

It's possible it's just low on fluid now, and the initial problem was dirty/boken down fluid, but really I have no idea. No codes. I had it towed to a transmission specialist shop today. They are a very busy shop and most likely won't even look at it until Monday. The fact that it's a short week doesn't help my case. Hopefully it's just a bad valve body or something like that. That could save me thousands. This is a quality shop, and they will diagnose it free of charge. I'm giving them the work anyway, but that's a sign of a good business.

Wonder how much this is going to cost?

2k miles out of warranty, GM should still help you out.

 

[TheShark]

2k miles out of warranty, GM should still help you out.

Should being the key word! I called the closest dealership and they said, "well sorry, but you are out of warranty. But bring it in and we'll get you fixed up!" No thanks! The shop I brought it to is known to successfully work with manufacturers to get stuff covered. I'm leaving it in their hands. Maybe they will have better luck than me. Either way, I'm confident they will get it fixed faster than anywhere else, so, it is what it is.

 

[slotimmy]

My tranny has had major issues the last 2 months. After 5+ visits to the dealer they finally said it is the valve body. No ETA on when the part would be in. I finally got through the GMC and they said the part already shipped and will be in 2 days. How the "F" can the dealer not know this S#IT? $900 for the part and no idea about the labor. Thank god I am still under warranty.

 

[R467X]

I experienced a really rough "jerk" downshifting at low speed the other day. Hasn't happened since. Hopefully its a one and done and not the beginning of the end. 24 hd with 7.3k miles..

 

[BuckWallace]

I experienced a really rough "jerk" downshifting at low speed the other day. Hasn't happened since. Hopefully its a one and done and not the beginning of the end. 24 hd with 7.3k miles..

Were you going slightly downhill at all? Mine does this all the time when in a line at a stop sign on a decline, usually when slowly coming to a stop and then giving it light throttle when the car in front of me starts moving. Pretty sure it's just a TCM/software thing and not a valve body issue.

 

[R467X]

Were you going slightly downhill at all? Mine does this all the time when in a line at a stop sign on a decline, usually when slowly coming to a stop and then giving it light throttle when the car in front of me starts moving. Pretty sure it's just a TCM/software thing and not a valve body issue.

No I was going 10. Maybe 15 when I hit the brake for some pedestrians and it jerked me forward. Road was level. I'm also thinking it's a one and done deal. Take yours in, doesn't sound normal to me especially if you can reproduce it in front of the mechanic

 

[mandalorian]

The valves in the trans valve body are trash and get jammed up. The line pressure either causes the valve to finally slam open/shut at the wrong RPM range or that gear completely gets skipped and the next gear gets engaged (most noticeable when down shifting). I lost 1st and 3rd…also had hard shifts at times in reverse. Not sure how it took them 5mos to figure that out (RIDICULOUS!), they could have noticed that on a test drive with their machine hooked up.

Good luck!

 

[24Titanium3500]

Just hit 36k on my '24 gas/10spd. Lubed up the exhaust bolts the other day. Pan dropping next weekend hopefully with new filter and 14 fresh qts! No problems with mine to this point. I'm not easy on it.

 

[zeeya]

If they don't provide a loaner, GM customer service will reimburse you for a rental vehicle, but the limit is 44.00 per day. I just went through this. I ended up with a loaner but that is what GM customer service told me.

Heck, they told me $25 today

 

[zeeya]

Stopped today on the way to work and when I got back in the truck it started clattering (only way I can describe it). Chevy dealership was about a1/2 mile away. Mechanic said it’s coming from transmission. No codes thrown or reduced speed. Was fixing to get back on I-49 as I still had about 70 miles to get to my company truck.
They are going to drop the pan tomorrow and give me a call.
Did flush at 35,000 and another at 70,000 miles. Currently it has 76,900 on it.
2021 with 3.0.

 

[24Titanium3500]

Stopped today on the way to work and when I got back in the truck it started clattering (only way I can describe it). Chevy dealership was about a1/2 mile away. Mechanic said it’s coming from transmission. No codes thrown or reduced speed. Was fixing to get back on I-49 as I still had about 70 miles to get to my company truck.
They are going to drop the pan tomorrow and give me a call.
Did flush at 35,000 and another at 70,000 miles. Currently it has 76,900 on it.
2021 with 3.0.

Sorry man, I hope you get yours fixed, but this is 2500/3500 forum, so your trans is different...Just helps keep the information pertinent.