1999 Tahoe

Ok, I have gotten a good start on my alarm install over the last couple of days, but I have a couple of questions for you pros.

Thanks guys, I am almost there...

Steve

EDIT -

As far as I know, the brake wire is the WHITE wire above the brake pedal and yes it is very tight in this area. I have smaller hands ( don't laugh  ) and I do not have any problems with grabbing the wire. The 1999 Tahoe has the Passlock II system and in the past there have been troubles with this system and the available bypass modules out on the market that have fixed resistor values for the bypass. My suggestion would be to get a IPPME variable learning bypass module that will learn the resistor value and if it changes it will change with the Passlock. Depending on the bypass module that you have you only need to attach the applicable wires but not normally all of them. Disarming the factory alarm does not bypass the Passlock system. You need to bypass the Passlock at the Passlock module in the key cylinder.

  PICTURE 1

PICTURE 2

PICTURE 3

Ok, I cant figure out the passkey thing, so Im moving on for now, but now I cant find the BCM, which from what Ive read is where the door lock wires, door trigger wires and parking lights are.  I know the colors of the wires, but just cant seem to find them.  (Got a mean crick in my neck for looking though).  Is what Im looking for in any of the above pics?  If not, maybe someone could give me some directions based on the photos. 

PS

Please resend the pictures .

Pictures moved to different web site.  Hope this helps.

Thanks,

Steve

It's the 2000-up that has the BCM plainly visible under the driver's dash.  Your older-style 1999 model does not.  Or at least not in a readily accessible place.

When you pull down the driver's knee bolster, you'll see a single bundle of wires running up into the steering column.  The thinner yellow wire is the Passlock resistance wire, and the ORANGE / black is Passlock ground.  You can also follow all of these wires to a large black junction plug above the driver's left foot.

The whole left side of the underdash comes off with just three 7mm screws---I'm surprised you were able to work at all while it was in place.  Behind that, remove four 10mm bolts and the metal piece, for even easier access.

Door trigger is purple, at the headlight switch, and it catches all the doors, including the rear.  The panel holding the headlight switch will pop out a couple of inches if you just pull on it---use a hook-shaped tool to drag the wire harness out and make your connection.  If you have trouble doing that, just take off the screws so you can pull the dash panel out farther.  (Parking lights are brown, also at the switch.)

I've never seen a factory alarm on a '99.  Don't bother looking for a factory disarm wire unless you know you have a factory alarm.

I've never had a bit of trouble tying into the brake wire directly at the brake pedal, but you should be able to find the same wire in the driver's kick panel, running to the rear of the car.  (Parking lights should be in there as well.)

|       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |

Notes:

Thanks Chris, you have given me new hope!  Just for future reference for others, here are two more photos of the steering column...

I think I saw the passlock wires you were talking about while taking these picture earlier :-)  Cant wait till the morning.

Photo 1A

Photo 2A

Yes, those are the correct Passlock wires.  I think it would be easiest to put the steering column back together, and remove the driver's side knee bolster instead, as I described above.  If I remember correctly, there is only one single bundle of wires coming down from the steering column, and only one small yellow wire in that bundle--pretty hard to get it wrong.

In PICTURE 1, I seee a yellow butt connector, and a brown Scotchlok.  Are those your connections?  If not, then it's likely another piece of aftermarket equipment was installed and then removed before you got the car.  These Scotchloks and such might be used as an investigative tool, to help you find the correct wires.  (As always, test each wire for proper function before hooking up; the previous installer may have made a mistake.)

There was another system in this car called a Triad.  It was one of those dealer installed transponder deals, where a fob thing goes on your key chain, and is required to start the car.  Since I didnt buy this option, they put in a bypass module so the system is in operative.  I think it is purely a starter interrupt as far as I can tell.

Steve