VATS relearn trouble
Mar 28, 2010 | 07:16 AM
#1
Thread Starter
TECH Fanatic
iTrader: (3)
Joined: Jul 2007
Posts: 1,331
Likes: 0
From: North of Detroit
VATS relearn trouble
I am in the process of the relearn following these instructions...
...after the first ten min. cycle, the light went out, tried to start, it didn't, which is what I expected, but then the light went out almost immediately after trying to start. WTF is that about? I shut the key all the way off, then back on without trying to start, and the light stayed on. Is the pcm still learning?
When you switch ECM's, your truck probably will crank, but won't start.
Here's how you "teach" the truck your new ECM:
Turn ignition on
Try to start (it won't)
Leave ignition on.
In 10 minutes exactly the SECURITY (lock) light will turn off.
Try to start (it won't)
Leave ignition on.
In 10 minutes exactly the SECURITY (lock) light will turn off.
Try to start (it won't)
Leave ignition on.
In 10 minutes, the light will go out, and it will start up, and will "marry" the ECM to the BCM permanently.
This will even work with locked "pre-programmed" ECM's so you can test them on other trucks.
Here's how you "teach" the truck your new ECM:
Turn ignition on
Try to start (it won't)
Leave ignition on.
In 10 minutes exactly the SECURITY (lock) light will turn off.
Try to start (it won't)
Leave ignition on.
In 10 minutes exactly the SECURITY (lock) light will turn off.
Try to start (it won't)
Leave ignition on.
In 10 minutes, the light will go out, and it will start up, and will "marry" the ECM to the BCM permanently.
This will even work with locked "pre-programmed" ECM's so you can test them on other trucks.
Thread
Thread Starter
Forum
Replies
Last Post
Velocity1
GMT 800 & Older GM General Discussion
6
Sep 22, 2015 01:32 PM
