Trans Issues
#21
The 4t65e with the 2.93 final gear ratio goes with the 3.1 Monte LS. The 3.8 has a 3.29 final gear. In order to do this gear swap and have it work without throwing a cel code you have to have the computer ECM program changed. Also, in doing this swap you are decreasing the performance of your Monte SS. I'm surprised your Trans guy didn't explain this to you. Even the 4t65e HD has a 3.27 final gear.
#23
https://montecarloforum.com/forum/en...on-info-34514/
The above post explains the final gears for each version of the 6th gen Monte.
Sorry for my mistake. I had just woke up when I read your post. I had not had my coffee yet! Lol.
I believe the 4t65e - HD has a shorter cv axle on the right side. And the ECM has to be reprogrammed for that trans otherwise you get a CEL code.
The above post explains the final gears for each version of the 6th gen Monte.
Sorry for my mistake. I had just woke up when I read your post. I had not had my coffee yet! Lol.
I believe the 4t65e - HD has a shorter cv axle on the right side. And the ECM has to be reprogrammed for that trans otherwise you get a CEL code.
#28
Update: The Monte was flat-bedded to the shop about 20 minutes ago. The transmission will be put in and should be ready to go by Saturday. It sucks when there's only one full timer and two part-timers that work at that small shop.
I am planning on taking my car on a nice long ride after this.
I am planning on taking my car on a nice long ride after this.