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Need a GM Transmission Rebuilder Recommendation

bk2drvr

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Need to have the transmission rebuilt in my 2018 GMC Sierra 1500. Looking for a reputable rebuilder in the OC area (or outside OC is fine too). Preferably someone who knows how to upgrade the weak links in the transmission. Any guidance is appreciated. Thanks.
 

fmo24

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Try Leon’s Transmission. There are 3 in OC. Garden Grove, Costa Mesa and La Mirada plus several more up in the valley.
 

pixrthis

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I’d check price on a brand new one from gm and find someone to put it in. I haven’t had great luck with the last 3 transmissions I had rebuilt at 3 different shops.
 

pixrthis

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Try Leon’s Transmission. There are 3 in OC. Garden Grove, Costa Mesa and La Mirada plus several more up in the valley.
Leon’s has made basic mistakes on my sons Ranger and didn’t stand behind their work.
 

Cdog

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Inglewood trans in Fullerton is where I would start.
 

Cdog

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Does Mile L still own Inglewood Trans?
A factory remanufactured trans should have all the latest updates and also has a warranty that will be honored at all GM dealerships.
Not sure. But he knows his stuff and stands behind it.

Agree with the GM stuff too. At least when it breaks again they can take it to any GM dealer
 

77charger

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Not sure. But he knows his stuff and stands behind it.

Agree with the GM stuff too. At least when it breaks again they can take it to any GM dealer
Dont think he owns the shop anymore but i had him rebuild my 4l80 on my truck about 5-6 years ago got lucky as he mainly does the allisons.I referred a friend for a 1500 trans and he said at the time he wasnt doing them.But mike was defintiely a cool guy like how he would answer the phone and you can tell guy he was talking too was either asking stupid questions and looking for a bottom line price mike wouldgive them a straight sarcastic answer too
 

76 Hondo

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I’ve used Angel’s in Mission Viejo, did 2 of my GM pickups recently the 2017 Sierra.
 

catmandu

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I second Mike at Inglewood , GM calls him with questions
 

SBMech

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Does Mile L still own Inglewood Trans?
A factory remanufactured trans should have all the latest updates and also has a warranty that will be honored at all GM dealerships.
Their warranty is crap really , and they don't update shit. It will last 100k+ and then you'll replace it again. 🙃

Last Gm I was quoted was unlimited mileage but only for 1 year. My local dealer quoted me $3800 for his trans at my cost.
 

MonkeyButt70

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Leons has always done great for me. Also trade secret is most trans shops sub out the work to Leons for the actual rebuild.
 

Doc

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Mike sold the shop but was still there about 6 or so months ago when I went.
 

Chili Palmer

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Their warranty is crap really , and they don't update shit. It will last 100k+ and then you'll replace it again. 🙃

Last Gm I was quoted was unlimited mileage but only for 1 year. My local dealer quoted me $3800 for his trans at my cost.
We’ll that sucks…
 

Activated

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I have about 110k miles on my remanufactured Jasper transmission in my 04 Tahoe.

No issues so far and closing in on 260k miles overall.
 

HALLETT BOY

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Jasper has 100K 3 year nationwide warranty
A GM reman would be good
I’ve had decent luck with Leon’s , depends on manager
 

hallett3

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Mike and joe at Westminster transmission are the best . Know him for thirty years . Has taken care of all my cars. He backs his work and is the most honest guy I’ve met. 1(714) 897-6611. He also has great knowledge in making them better and stronger 👍
 

Ladsm

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Call Greg at Chino Hills Transmission. Been around forever, family run business and fellow boater and Glamis fanatic
 
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