Energy Suspension 3.1129G Large 7.5 CC Transmission Mount for GM

Fit perfect on my 2005 GMC sierra 3500 duramax with the Allison 1000 transmission. Took a while to get it lined up. Dont listen to the idiots on the internet though, the preload plate is required to be installed as well as the mount. Energy suspension notes that in the installation manual as well. Its not specifically listed for the Duramax/Allison application but this is the right mount.

Its a Tranny mount. I used same product line on the engine mounts. I have a vibration from nor changing this mount. These are superior to oem rubber mounts.

Holding up as expected

Took all the slop out during shifts, and gear selection. Take out the stock rubber mount!

Worked great for my modified Duramax.

I bought this open box/used for a discounted price. It arrived looking brand new. The box on the other hand, looked like it was a stunt double for the opening scene of the first Ace Ventura movie. I used this as a replacement for OEM mount on a 1991 suburban 4x4 LS swap. Good fit and looks solid! I hope to drive it soon.

Good product for my 700R4. Had no instructions to show what the extra bracket was supposed to be used for. Make sure you also use poly engine mounts if you are going to use this.

It fit my trailblazer lt 4.2 transmission it has the 4l60e

Had a nasty driveline vibration on my 2006 Chevy 2500 Duramax. Turns out my stock mount was in 2 pieces! Good fix and upgrade!

No more lose motion from the rotten factor mount putting it in gear.