Figure out what tripped the code and fix the problem
You don't, fix the vacuum leak that's causing the eratic idle conditions
I just did it on 2003 buick rendezvous,i bought a can of fix leak,oil,freon all in one from advance and hooked it up to the lower a/c port and charged it to about 35 psi and the air blows like new.
yes
May be idle position sensor.
U need to clean the throttle body and also clean the idle air control vavle
To fix high idle problem on a 1996 VS Commodore, first locate the idle air control valve. Unscrew and unplug electrical connector running to the valve. Turn the valve over and clean the sensor for debris.
manually under the hood.
Because something is broken, or your idle speed has been set WAY to high. Try to fix this soon.
To fix the door lock in a Buick Rendezvous, first, remove the door panel by unscrewing any visible screws and carefully prying it off. Inspect the lock mechanism for any broken or jammed parts, and lubricate it if necessary. If the lock is damaged, you may need to replace it with a new one, following the manufacturer's instructions for installation. Finally, reassemble the door panel securely and test the lock to ensure it operates properly.
Could be throttle plate frozen in throttle body - try to free it with screw driver or wooden dowel 74delta, spent every waking hour trying to fix vortec engine for the last 2 weeks,with same problem, it was the intake gasket, THANK GOD I found it.
You can't fix the BCM you have to replace it, then it needs to be programed and the anti-theft needs to be reprogramed also. Most places won't be able to do this, you'll have to take it to a dealer.