Where is the transmission control module located?

2001 CHEVROLET SILVERADO
170,000 MILES • 6.0L • V8 • 4WD • AUTOMATIC
Avatar
HEALING GROUNBREAKER
Attempting to find the location of the transmission control module in a 2001 2500 Silverado 6.0. Truck acts as if it is stuck in second gear then will not shift, so I believe this may be the cause of the problem, therefore I would like to do some attempted resets of the TCM before it gets replaced.
Jan 24, 2025 at 6:38 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,193 POSTS
  • ASE Certified Mechanic
Hi,

Two different transmissions were used. However, I believe both were mounted to the fan shroud (near the battery side). See pics below. There should be a cover over it to eliminate heat from the engine.

Let me know if this helps.

Take care,

Joe

See pics below.
Images (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Jan 24, 2025 at 6:54 PM
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.