RB_Trucker
Full Access Member
What’s up guys, just figured this would be a good post since I’ve personally now experienced a T/C failure and went through a minor performance build on my 2019 Suburbans 6L80 trans.
Was headed on a road trip to San Louis Obispo when I lost 5/6 gear, luckily I was able to put trans in manual mode and set max shifting to 4th gear only and drive it that way the rest of the trip with 0 and mean 0 issues.
Got home and took to a local reputable trans rebuild shop
Pacific Coast Transmission
1911 Pacific Coast Hwy
Lomita, CA 90717
United States
they popped the trans open and said it was a T/C failure but not as bad as they’ve seen. They quoted me $3750 for rebuild, re-machine pump surface. I had them also install the “Zip-kit”,Billet JBMX, red frictions and Koleen steels I provided seperately. So altogether it was $4600 out the door.
Mind you I don’t tow or race the truck i overland her and she’s a road trip queen. Just 3.5” lifted with 34.5 tires and factory 3.08 (will be changed to 3.73 soon).
I gotta hand it to the BlackBear performance TCM tune that helped this trans perform for as long as it did. I have the actual out the door paperwork attached below for others to review.
Btw I took my Suburban on a 650 mile round trip to Yosemite and back the same day I picked it up from the shop. Performed flawlessly as expected even in 100+ heat.
Was headed on a road trip to San Louis Obispo when I lost 5/6 gear, luckily I was able to put trans in manual mode and set max shifting to 4th gear only and drive it that way the rest of the trip with 0 and mean 0 issues.
Got home and took to a local reputable trans rebuild shop
Pacific Coast Transmission
1911 Pacific Coast Hwy
Lomita, CA 90717
United States
they popped the trans open and said it was a T/C failure but not as bad as they’ve seen. They quoted me $3750 for rebuild, re-machine pump surface. I had them also install the “Zip-kit”,Billet JBMX, red frictions and Koleen steels I provided seperately. So altogether it was $4600 out the door.
Mind you I don’t tow or race the truck i overland her and she’s a road trip queen. Just 3.5” lifted with 34.5 tires and factory 3.08 (will be changed to 3.73 soon).
I gotta hand it to the BlackBear performance TCM tune that helped this trans perform for as long as it did. I have the actual out the door paperwork attached below for others to review.
Btw I took my Suburban on a 650 mile round trip to Yosemite and back the same day I picked it up from the shop. Performed flawlessly as expected even in 100+ heat.
