viper 571xv '04 chevy avalanche

Finished the installation and it even works The only problem I had was that I used the tach output from the Interface module (INT-SL)and it was unreliable (Sometimes would start/Sometimes not). Moved the tach to one of the ignition coils and it works great everytime. All in all it was a very easy installation (No relays,diodes,or resistors) My 2002 Dodge Caravan was much more involved than the 2004 Chevy Avalanche.Don't know if the rear defrost and heated seats are going to activate,I will have to wait until the temp is below freezing or maybe jumper the engine coolant temp sensor to fool the interface.One thing I noticed is that I lost the priority unlocking feature with the Viper remote (Still works with the factory remote).Does anyone know if the interface should do progressive unlocking? Maybe I need to redo the programming?

the viper unit should offer it, however if u used a data or module that does the all in one, that feature is no longer available. if u want driver priority unlock, you need to go straight to the actuator.

Something else I noticed by accident. The truck has the Driver1/Driver2 memory feature, I was sure that I would lose that with Viper keyless entry but if I hit unlock on the remote 1 time it goes to Driver1 settings 2 times it goes to Driver2 settings when the key is placed in the ignition. Does this sound right? I had no idea it would do that. The INT-SL interface has seperate driver 1/2 unlock outputs but I figured that it would only work with the factory remotes.How do it know?

OK It got cold enough to verify that the interface does activate the heated seats and rear defrost below 32 degrees F. The INT-SL is a great module. Still can't figure out how it does Driver1/Driver2 memory with the aftermarket remote (see previous reply).