Need a spring compressor for changing transmission mounts?
Thread Starter
3rd Gear
Joined: Feb 2025
Posts: 3
Likes: 0
Need a spring compressor for changing transmission mounts?
Hi all first post here. I have a bad transmission mount on my 2014 c7 base with the m7 trans. One of the steps in the procedure to change the mount is to use a GM tool J-33432-b which appears to be a leaf spring compressor and is over $1000. My question is if there is a way to avoid using this speciality tool? I have dug around in the forums and YouTube and there isn’t much info about replacing trans mounts.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
However, that doesn't mean the GM tool has to be used. I have seen workarounds using various hydraulic jacks to remove the spring pressure from the lower control arms so the cradle can be dropped.
Bill
Thread Starter
3rd Gear
Joined: Feb 2025
Posts: 3
Likes: 0
Sadly, the Factory Service Manual disagrees with you. There are only engine and transmission mounts. If the FSM replacement procedure is followed a leaf spring compressor is required to replace the transmission mount.
However, that doesn't mean the GM tool has to be used. I have seen workarounds using various hydraulic jacks to remove the spring pressure from the lower control arms so the cradle can be dropped.
Bill
However, that doesn't mean the GM tool has to be used. I have seen workarounds using various hydraulic jacks to remove the spring pressure from the lower control arms so the cradle can be dropped.
Bill
