Neutral Safety Switch replacing?

2005 CHEVROLET IMPALA
118,000 MILES • 3.4L • AUTOMATIC
Avatar
SAMANTHA_1
  • MEMBER
  • 1 POST
Where exactly is the neutral safety switch located? And what do I need to remove to get it out & replaced?
Sep 4, 2026 at 8:58 PM
Advertisement
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,381 POSTS
Yep, this may be a tough one, the neutral safety switch is inside the transmission or an externally mounted Transmission Range Switch (TR), Park Neutral Position Switch (PNP) located on the manual valve selector shaft, or an internally mounted Internal Mode Switch (IMS) located inside the automatic transmission, item number 811 in the image. So I would look at where the shift cable connects to the transmission and if the switch is not there it is inside the transmission.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Sep 5, 2026 at 9:39 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.