Why does my Evo-All stop controlling door locks and alarm in a 2006 GMC Sierra?

Question

I installed a Evo-All into a customers 2006 GMC Sierra along with a Pro-Start remote starter.  The two are hardwired together.

The system programs fine and always starts the truck, but only after I program the unit the door locks will work just once or twice and then no more.

I have tried 3 units, all are hardware version 6.  I had initially tried firmware 70.04 and it has given the problems above.  With the other units I tried firmware 4.06 and 4.16(?) but with either of these the units would not light up to program.

Thanks for the help.

Answer 1

Hi Andrew,

First, lets stick to 4.06 as written in the install guide.

 

After flashing the unit and before attempting to program it in the car, you will need to do a master reset on the EVO, which is very simple.

1. Hold down programming button while plugging in datalink connector.
2. Let go of button when LED is RED.
3. Push and hold button again until all three LEDs start to alternate.
4. Disconnect unit, she is now reset.

The system programs fine and always starts the truck, but only after I program the unit the door locks will work just once or twice and then no more.

Since you are wire-to-wire, make sure the blue and white wires of the datalink are cut out. Then test your locks. A simple test would be to pulse the purple or purple/white of the EVO to ground.