Can I get step-by-step instructions on how to program a new BCM to my vehicle?

TIFFINEY COBB

MEMBER
2004 CHEVROLET TRAILBLAZER
4.2L
V6
2WD
AUTOMATIC
160,000 MILES

I have purchased a new BCM and have a Snap On scan tool on loan. Now I just need a step by step or direction as to how to program my vehicle. Yes, already installed the new unit properly. Just cautiously thinking. Thank you in advance.

Friday, August 4th, 2023 AT 1:29 AM

2 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,505 POSTS

Did you use the scan tool to gather the old BCM information to be transferred to the new BCM?

Information on programming:

Gather Necessary Information: Before starting the programming process, make sure you have all the relevant information, such as vehicle identification number (VIN), programming file(s) for the new BCM, and any security credentials or codes required for access.

Read Current BCM Data: The scan tool will read the current data from the old BCM, allowing you to verify the configuration and settings before transferring them to the new BCM.

Here is additional information from AllData. You can get a preprogrammed unit by searching Google or Ebay if you give them your VIN. Check out the images (below). Please let us know how it goes.

Images (Click to make bigger)