I have a Compustar in my 96, It's just a remote start and key-less entry.. works great at lock and unlocking but the remote start sucks.. I had a buddy do it, he's done 3 Compustars in his Chevys and they work great. He goobered something up cause when remote started the transmission wont downshift into first. I thought about taking it to a professional to fix it but I feel bad taking a hot mess into a shop.
That being said, I'm thinking about putting a whole new Remote start/Key-less/Alarm. Are there any of these DEI products that wont work with our trucks?
The issue is a second ignition wire needs powered up. This is a very well known issue with '90's GM cars & trucks with electronic transmissions. Most remote start installs need only a single ignition wire powered up (power when key is on
and turned to crank). This is the pink wire in your truck's ingnition switch harness. This is all that is needed to 'start' the truck. However there is a white wire (PCM power) that will test the same way (power when key is on
and turned to crank) that
has to be powered as a 2nd ignition wire (most modern remote start units have a second wire that can be either ign or accy, but if not then a relay will need to be added to power this second wire). This is a simple fix and will correct your issue.
Most 'seasoned' remote start installers should know this. It was a common mistake back in the days when GM first went to PCMs that control the engine/transmissions. IIRC some 1991 trucks and all later trucks required this second wire for remote start.
