96 gmc sierra keyless entry with viper

Okay, So i tested the h1/10 for 12v while pressing the key fob and it gave me it so i hooked it up to the lights and it made them flash, It was once for lock and twice for unlock. So we were good there. I checked my ground with my test light and it was good. I also tested my red and my violet/black after the fuse and they both have 12v. When i press the lock or unlock it does make the relay sound and when i press the lock it also sets the led to flashing. I also did your tests and when i left the white connected and separated the blues, i put the 12v to the motor side and it locked and when i put it to the switch side the fuse blew so i hooked it back up the way you said for c lock and still nothing. Am i able to test for an output on the unit? Is there any way i could have wrecked the unit or gotten a bad one? Thanks!

Well, you made some good progress. You definitely have Type C locks and are on the correct wires. You now have the Parking Lights working and giving visual indications from the 211HV. You can test the 211HV's lock outputs with your DMM. I would disconnect the GREEN/ Black and the Blue/Black wires from the vehicles lock wires ( motor side ). Then set the DMM to 20V DC, Black lead on chassis ground and Red lead on the GREEN/ Black wire. The DMM should read +12V for 0.8 seconds every time you press the 211HV remotes Lock button. Same test can be run on the Blue/Black wire pressing the Unlock button.Soldering is fun!

Alright, I took the GREEN/ black off and tested it and it read 0v i also did the same to the blue and 0v. I tested the parking light wire again and it reads 12v when i press it and all my inputs are still at 12v after the fuse. Is this thing no good?

Don't want to say it's a bad unit but...

Last DMM check would be to verify that there is a constant +12V input right at the H1 connector on Pins 7 and 9 ( Violet/Black and Violet ).  These are the wires that supply the internal lock relays outputs.

There are no Programming options that should affect this.  As a final attempt, pull the H1 connector off

and let the unit sit without power for at least 20 minutes.

This wasn't a re-furb unit off EBay, was it?

Soldering is fun!

I unplugged it and tested it at the plugs terminals and i had 12v at them, left it unplugged for 40 min, went back and plugged it in again and tried it. Same situation lights flash and it makes the relay noise but the lock do not work. I don't think it was, I bought it off of amazon. Would you conclude that it is then defective? Thanks!

Here is another test you could try.  The 211HV has ignition controller door locks as a default.  That means it should

lock the doors within 3 seconds of seeing the ignition go to ON.  It should also unlock the doors as soon as the keyis turned to OFF.

Perhaps there is another forum member that is real familiar with the 211HV that can step in a assist in doing a

transmitter dump / reset, then a transmitter learn.

Other than that, I'm out of ideas.  While I don't use the 211HV, I usually have the luxury of having an entire spare

kit available to swap with and continue troubleshooting.

Soldering is fun!

Well, thanks a bunch for your help! I wouldn't have been able to figure all this out without you!

Heres an update, I purchase a new one and plugged it in to the harness I had already wired and it worked! So it must've been a faulty one. Thanks for the help!

Cool! Glad it's working properly now.      Thanks for the update.Soldering is fun!