ACDelco 20835127 Equipment Automatic Transmission Review

This is a GM Genuine Part. The easiest of the three transmission lines to replace. I used this on my LLY to upgrade to a LBZ/LMM cooler. Less expensive than paying for custom lines and factory fit.

GM Duramax trucks have a history of leaking transmission cooler lines, this is the 3rd part number revision for these lines Trance Cooler I hope GM understands this. The line came all the way to my truck, it fit just like the originals, but fitting replacements is a lot of work. Bumper, grille, skid plate, cross member, fender liner, air filter and intake system must be removed. I used heavy duty zip ties to try to keep them from moving after installation. The part numbers needed for the 2007…

. It was a lot of work, it took me 6-7 hours to remove all sorts of stuff. Lots of gossip and foul language. If they ever fail again I will go with the long hydraulic lines from Red Auto Rehab or another brand (Engineered Diesel) that you cut and attach the compression fittings and hydraulic hose to the standard OEM hard lines that come with the truck . . . I wanted to have a supply of truck bones but forgot. 2006 2500HD LBZ Truck with 25,000 miles. One of the lines (under the protection plate)