Installing Remote start

[pshadwick]

I'm installing an Audiovox remote starter in my 2001 Silverado. One of the required connections is for "Tach Sensor input". Does anyone know where to make this connection? I understand it can be found in the PCM, but which of the 100+ wires?
Your assistance is greatly appreciated...Paul

[sportin83]

the easiest place to get the tach is off the fuel injectors. u can use any injector just use the uncommon wire on all of them. each should have 2 wires and 1 wire on each one will be the same as the other injector, and use the 1 wire that is different on any injector.

[sportin83]

another side not make sure that you hook up the 2nd ignition wire or you can ruin the trans. somehow on the gm trucks and suvs.

[sportin83]

you may already have all this but someone else may need it someday. all the main wires needed for a alarm/remotestarter.
12volts red + ignition harness
Starter yellow + ignition harness
Ignition pink + ignition harness
Second Ignition white + ignition harness
Accessory orange + ignition harness
Power Lock lt. blue + brown plug at BCM
Power Unlock white + brown plug at BCM
Parking Lights+ brown + lt. blue plug at bcm or at headlight switch
Door Trigger - at dome light white wire
Tachometer white ECM
Wait to start dk. blue - instrument cluster
Brake Wire white + brake pedal switch
Horn Trigger black - brown plug at BCM

[Bill-SILV]

You really dont need to connect the TACH wire do you? Its been so long on mine that I dont remember if I did. I forgot what it does.

[sportin83]

Originally Posted by Bill-SILV

You really dont need to connect the TACH wire do you? Its been so long on mine that I dont remember if I did. I forgot what it does.

some remote starts require it and some have it optional. the vehicle will usually start smoother with the tach hooked up.