Hey everyone,
I recently was asked to replace the heater core on a friend's 93 S10 blazer (thanks to the information on this site)and after I did, all of the interior lightsstay on, even when the doors are closed. My only thought is that when I disconnected the ECM, it somehow affected the aftermarket alarm and that somehow is causing the lights to stay on.
If anyone could help in any way, it would be greatly appreciated.
Thanks in advance,
Colin

 

is the light switch clicked all the way over sometimes its the simplest things

 

I wish it was that. I tried it but thanks. Oh, and I forgot to mention (if it matters) its a 934drs10 blazer tahoe4.3 4x4

 

cant u unplug the aftermarket alarm somehow to see if thats what is it?

im not very educated in wiring lol

 

Yeah, troubleshoot by disconnecting one thing at a time.

 

Make sure the cargo area light switch is off.