Key Relearn I went through the whole process still not working?

AMYLOU36

MEMBER
2006 CADILLAC SRX
4.6L
V8
2WD
AUTOMATIC
177,000 MILES

I replaced the ECM and was given instructions on how to do the key relearn. The key was already stuck in the ignition so after the new ECM was installed, I turned the key to the on position and waited the 10 minutes for the light to go off, but the light never went off. I waited for about 20 minutes and nothing happened, so I turned the key to off and waited 5 seconds and turned it back to the on position and again the light didn't go off. I went through the whole process but the relearn didn't work. Now the fuel pump doesn't come on when I turn the key. I thought it could've been the battery at first but now I don't know what it is. Is there a way to start over? Or does anyone know how I can fix this?

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
48,666 POSTS

I would make sure the remote has a new battery, also can I ask if the ECM has pre-programmed? If not, this will be the problem. Once the ECM is ready this is how to relearn the keys in the images below. You can get a preprogrammed unit by searching Google or Ebay. Check out the images (below). Please let us know what happens.

Images (Click to make bigger)