Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Are you/the customer familiar with how the remote start system works?
OK, that's fine, I just wanted to walk you through that before we get too far ahead.
You have the factory remote transmitter, yes?
OK, first of all, if the check engine light is on when the car is running, the remote start system will be disabled.
Assuming there's nothing wrong with the car, press and release LOCK, then press and hold the START button for two seconds. Lights should flash to acknowledge, and car should start up.
Does the fob lock and unlock the doors?
When you lock the doors, you have to press and hold START within two seconds. Are you getting a light flash to let you know the doors are locked? And then are you able to get hold the START button and you're not getting any lights or anything in response to the START button?
OK, you'll need to test that FOB. There are different ways to test it, GM dealers have a tester for this purpose, but I also have a TPMS tool that will test fobs. Do you have a tool that will test the outputs of that transmitter?
I understand. I don't think that will work for testing a transmitter.
Does the customer have the second transmitter that came with the car? Or, are you able to just source a new transmitter? It sounds like the start button is not transmitting, you should at least get a light flash to acknowledge the start button, even if the car doesn't start.