Keyless entry wiring

[marius]

Hello all,

I am having difficulty wiring the keyless Taplock unit in my 03 H2. I chose the rear liftgate unlock button as location since the 12v+ continuous is present at the power outlet back there.

As I understood the diagram, unlock requires a negative pulse and the unlock wire is the white one on the switch. Got the Taplock wired, tested fine and it works OK for the first 30 or so seconds while the Passlock light is lit on the dashboard. As soon as the light goes off the keless would not open the doors anymore.

I tried all three modes, single pulse, double pulse and 3 second long pulse and nothing. I know that the GM have the Databus, but I had this thing wired in the 2003 Tahoe I traded in and it worked there. The one difference between the Tahoe wiring and this one is that I ran in parallel with the unlock wire, a lead into the driver door for the alarm disarm. I was told at that point that it was optional so that the alarm would not turn on when I open the door. Since I need this as emergency backup only, I don't care if the alrm turns on and I didn't run a wire all the way upfront in the door. Not an easy task anyway.

Are there any wiring experts on the forum to give me a suggeston ?

What am I doing wrong ?

Marius
Granger IN