Chevy and GMC Duramax Diesel Forum - Reply to Topic
Transmission Shop Discuss the Allison OEM, aftermarket, and the ZF-6.

Thread: Transmission Shops Near You. (we need YOUR help to add to this!) Reply to Thread
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  Topic Review (Newest First)
07-29-2019 02:34 PM
MarvDmax04.5 Phoenix Arizona

COPPERHEAD DIESEL in Mesa. Shawn builds all Allisons IN HOUSE and has his $#!+ together. He won't blow smoke up your skirt selling you the highest price parts raved about on the internet. He will explain in clear terms why he recommends what he uses in his builds and and how they compared in REAL WORLD testing to (X, Y and Z) brand.
03-12-2019 09:55 AM
NEED HELP Asheville, North Carolina

Original post: "I have a 2005 Duramax with 125,000 miles. Stock other than I recently did egr delete, pcv reroute and efi live tune. NO problems before this but have "limped" the transmission 3 times since these mods. driving highway speed 60-70? mph and hit the pedal to pass. transmission felt like it popped out of gear and then was revving really high. pulled over and had no reverse and check engine light was on. Shut engine down and set for a minute. restart and trans was back to normal and reverse was back, but check engine light stayed on until driving awhile it went out. I brought truck to shop $600 later shop said all good. They dropped the pan and said no metal in it, changed fluid, filter and transmission range sensor. Truck did exact same thing not long after this service. It has done this total of three times in same scenario. The code reads "incorrect 5th gear ratio" Have I screwed up the tranny? Is there a fix? Is it the tune? I'm running on the race tune +190 Horse extra ( I have a dial I can tune it down, but I'm running the max tune for fuel mileage not the power, but I hit it to pass and it does this. Should I just dial it down? Is the damage already done? was it from the tune? I've been told that the efi live tune is "transmission safe" and that it was not the cause and that it was an underlying transmission issue that would have come up eventually anyway. Anyone offer any advice? Just drive more mellow? tune it down? new tranny? (drives fine until I hit it hard and goes into "limp") Any input is appreciated. Thanks."

quote: "A good builder will take your existing trans out of the truck and replace the internals with parts that have been designed to withstand the extra power. He will also install a beefier torque converter. It shouldn't take more than a day.

Or... you can pull your trans, ship it to say, Mike l. In California, he'll use that for a core charge and ship you a brand new crate trans.

In the forum section, under transmission, there is a "sticky" thread that details transmission mechanics that forum members have used and recommend.

As a bonus, when it's done, you'll be able to have big, built trans tunes flashed onto your efi live. That'll give ya the kick in the seat you've been craving lol"

.....I never did this to get "the kick in the seat" ...It was supposed to just be a bonus. I looked in the transmission "sticky" thread and unfortunately there are no transmission/diesel mechanics listed in Western North Carolina / Asheville area. If anyone know of a reputable shop I would appreciate the info! ... I won't be pulling the trans myself or shipping it - I don't turn wrenches myself, but I appreciate those that do! Thanks!
08-25-2018 07:03 AM
Zworrell Any good ones in or around Memphis that anyone knows?
03-10-2018 09:11 PM
Shanester Utah?
10-13-2017 11:09 AM
Originally Posted by BlownL36 View Post
@bigf19 Thanks for the heads up! Good shop?
@BlownL36 Yes,
Ron is a good dude, I worked for him 20 years ago, he worked for Atlantic Detroit Diesel Allison for years as one of Allison's main tech's back then.
10-10-2017 06:48 PM
Originally Posted by bigf19 View Post
@BlownL36 right over the NY border in Pearl River, NY
Ron's Quality Automotive
@bigf19 Thanks for the heads up! Good shop?
10-10-2017 04:25 PM
bigf19 @BlownL36 right over the NY border in Pearl River, NY
Ron's Quality Automotive
10-06-2017 06:50 AM
BlownL36 Any Shops in Jersey???
08-29-2017 07:37 PM
Minerigger You try underdround diesel performance and see if they do but Mike L at Inglewood Transmission is just a short drive over in Los Angeles

Sent from my SM-G900V using Tapatalk
08-29-2017 07:27 PM
[email protected] Don't laugh...any good shops in Las Vegas NV?
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