1997 GMC Sierra transmission upgrade.

1997 GMC SIERRA
103,000 MILES
Avatar
ASHINHURST
  • MEMBER
  • 1 POST
A local mechanic told my my transmission is going out and needs replaced. I think my truck has the 4L60E transmission. Can I upgrade to a 4L70E or 4L80E? Is this a difficult and costly upgrade? Or should I beef up the transmission I currently have? Any information would be great.
Sep 8, 2013 at 5:05 AM
Advertisement
Avatar
MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
I would just the standard transmission, not sure if you can use the other transmissions, the main thing you want to do is add a quality external oil cooler as this will help reduce temp stress on the trans and this is one of the main things that kill transmissions.
Sep 8, 2013 at 5:25 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.