Driveline Shudder/Vibe

[David Krueger]

I had a 2017 Colorado that developed shutter shift at 56,000 miles. I flushed the Trans. and replaced the fluid with a Mobil 1 Synthetic trans, fluid. They called it the blue fluid, but it was just because it had a blue lable on the box. Problem was gone the day that I picked it up and it never came back. 

[newdude]

21 minutes ago, David Krueger said:

I had a 2017 Colorado that developed shutter shift at 56,000 miles. I flushed the Trans. and replaced the fluid with a Mobil 1 Synthetic trans, fluid. They called it the blue fluid, but it was just because it had a blue lable on the box. Problem was gone the day that I picked it up and it never came back. 

 

 

Different transmission than OP.  

[GHalll]

Our 2016 Yukon XL started shuddering at driving speeds under load. Headed to the dealer tomorrow. 

[Spurshot]

Well, I changed the fluid with Amsoil and flushed out some by way of the cooler line and added more and flushed more. Got maybe a 75% fluid exchange.  Took it for a drive and it's still there, albeit it's better.  

 

But the real news (bad) is that the fluid was gray and looked like gray metallic paint. That ain't right. Not for 5-6k miles.  It looked better when I changed it last.  I think she's on her last leg.  

 

I need to find a transmission shop.  I'm about burnt out on working on vehicles.  I just finished changing my engine in my 2018 Jeep a couple weeks ago and replacing the driveshaft I bent on the Rubicon trail.  At 68, I'm just not up for changing the trans myself in the driveway.  It's 4x4 also.  

 

Anyone got some recommendations for a good honest transmission shop in southern Cal?

[KARNUT]

22 minutes ago, Spurshot said:

Well, I changed the fluid with Amsoil and flushed out some by way of the cooler line and added more and flushed more. Got maybe a 75% fluid exchange.  Took it for a drive and it's still there, albeit it's better.  

 

But the real news (bad) is that the fluid was gray and looked like gray metallic paint. That ain't right. Not for 5-6k miles.  It looked better when I changed it last.  I think she's on her last leg.  

 

I need to find a transmission shop.  I'm about burnt out on working on vehicles.  I just finished changing my engine in my 2018 Jeep a couple weeks ago and replacing the driveshaft I bent on the Rubicon trail.  At 68, I'm just not up for changing the trans myself in the driveway.  It's 4x4 also.  

 

Anyone got some recommendations for a good honest transmission shop in southern Cal?

I can understand that. Last year I changed a caliper on my avalanche. Screw that. I can afford to get it done. Now changing the transmission fluid in the odyssey is easier than changing the oil and it takes 3 drain and fills. So I’ll do that myself again. The hard part is finding a shop you trust. I have so the peace of mind is there. 

[Spurshot]

I think I found a good shop.  The truck has been there since Monday.  I spoke with the guy at length about these transmissions.  We talked about billet converters. He uses them.  We talked clutches, fluids, coolers, got the shop tour, transmissions in build, etc, and I'm convinced this guy knows these transmissions and is honest as the day is long. I told him my use of the truck for towing the jeep.  He will do the build himself rather than a big box replacement.  I gotta start letting go and having shops do more repair and maintenance work on my vehicles.  I'm just too old to do this kind of work any more.  I think I've found my transmission guy.  Kako Transmissions in Gardena, CA

 

I dropped it off Monday.  The trans is out and I'm invited for the teardown this morning. I'm  just hoping we don't find so much damage that the parts costs start going up.       

Edited August 23, 2024 by Spurshot

[Spurshot]

Although I haven't got my truck back and running yet, I'm going to say this shop and the manager Art is trustworthy and knowledgeable.  

 

I think I did well to have unhooked my jeep and drive separately up to the Rubicon and back.  Looks like the converter was shedding metal pretty fast.  I didn't shoot any pix of the fluid I dumped just 20-30 miles before taking it into this shop, but it was gray metallic. So, the metal in the pictures isn't as dramatic as it may have been if I hadn't just changed the fluid right before the teardown.  The second picture of the donut magnet is an indication.    I found my sticker on the pan today, which said I changed the fluid in June 2022 at 95k miles.  It made it to 114k miles. 

 

Here's some pix of the teardown.  It really isn't terrible.  Some wear in the pump, but the clutch packs look pretty good.  The one picture of the solenoid screen with metal, would likely have burned the 4,5,6 clutch pack, per Art.   Art said he'd have it back together by Tuesday-Wednesday.  

 

 

[Spurshot]

My trans shop texted pix of new parts and said he's about to start the build on my trans. Billet converter and many upgrade parts for the common problems.  He knows I tow my jeep, so he's using his experience to ensure it's upgraded in the  right places. 

 

Edited August 29, 2024 by Spurshot

[Spurshot]

Got my truck back today.  Runs like new.  Towed my jeep behind on the way home from the transmission shop.  If anyone needs a trustworthy transmission shop in the Gardena CA area, Art at Kako Transmissions treated me well, did the mods I wanted and within the quote he gave me.  

[Spurshot]

BTW, if going for a heavy use converter, think about getting a triple disc converter.

Sonnax 6L80/90 Torque Converter Heavy-Duty Builds Explained (youtube.com)

 

Edited September 5, 2024 by Spurshot