Need Some Pro Help Here

Got a question for yo'all. Have a 2004 GMC Sierra truck here with the Passlock II system and traced the wires off the ignition barrel to an ORANGE tube with two 22 gauge WHITE wires in it like the old VATS used to have. Use the GMDL-BP to bypass the system and it doesn't work properly all the time. I've tried many different things:

• 1. Used both the ground out when running wire and the OEM disarm wired in parallel to the BROWN wire on the GMDL-BP ,cranks but no start
• 2. Grounded the BROWN wire on the GMDL-BP straight to chassis and tried to remote start and still cranks but no start.
• 3. Tried using a PLXR on this truck but the Passlock wires are not the same as the ones on other GM vehicles. This only has 2 WHITE wires in the plug.
• 4. The GMDL-BP did work on two attempts but failed on about 20. The truck runs fine with the key in the ignition and when I try to remote start the truck while it's running with the key, the truck stays running with the key removed. The wiring for the truck is all correct and the tach signal is also good as I grabbed it at the injector.

The unit is the 1WAM-S from Compustar and just wanted to know what your take was on the ORANGE tubed wire with the 2 WHITE wires inside the tube. I would have bypassed it with the old 2 relay bit from days of old, but I haven't done one for such a long time and these WHITE wires threw me for a loop considering that I was looking for a YELLOW, BLACK or WHITE wire.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

what year truck is it is it the old gm style key with the chip visibly in the key or a newer style?

I believe those 2 white wires in the orange tube actually go to the button on the end of the directional lever or wiper level. Whichever one is on the left. ALL GM trucks with Passlock II have RED / white, yellow and either a black or ORANGE / black wire. I can't think of a GM truck that ever had VATS....only the cars did.

Year, make and model?

I found out that those wires in the ORANGE tubing are for the tow package wiring. I didn't see the Passlock wires, but I'll have to look harder for them. The problem still exists though with a radom start on the GMDL-BP and the stupid horn keeps setting off the OEM security. I'll disconnect the horn trigger from the GMDL-BP and this should salve that problem, but any takers on the Passlock issue ? I've used alot of these modules in the past and have not had any problems with it.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Maybe we could help if you actually said what kind of vehicle it is.

he has.. its s 2004 gmc sierra

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Driving a Bagged, Caddied 02 s10

I think he recently edited his orignal post. Or I'm an idiot and can't read.

The Passlock 2 wire colors are yellow, black, and RED / white (not used). They will be located next to each other in the junction block above the BCM. Find them there and trace them up and tap into them there.

once you find them in the harness cut the yellow wire and meter the resistance from the key side of the yellow wire to the black wire. To get the resistance you will need to bump the starter not enough to start but just to make the key send the value. at that point get that value from a resistor and connect it from the black wire to the car side of the yellow wire and see if that corrects you passlock problem.

Hire a kid to walk out and start the damn truck, problem solved:) Actually I know you know how to hook up passlock, obviously the wires are just deciding to play hide and go seek with you. I am sure if you look again you will find them there.

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double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

Thanks for the suggestions, but I need to know why the GMDL-BP is not working properly for this truck . I have installed alot of these inthe past with no problems bypassing the Passlock II system. I would bypass the old way with the relay and resistors, but I all cleaned out of resistors until my next shipment comes in next week ( damn Dodge vehicles !! )

Ravendarat........... I wish I could just hire the kid to do it, but the customer is from the US and I'd have to get the kid a green card and pay him in US dollars ! Too much hassles  Next time I get the truck I'll have to take a closer look and see if they even come down the steering column or if they just go straight over the steering column into the dash.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

I've had the gmdl-bp lose their minds before, try swaping the bypass with a new unit. It's worked for me in tha past..

Hymer

I usually use the dbpass23, omega's equivelant of the gmdlbp, and they usually work fine. passlock wires are yellow, white, and black in the distro block with the main ignition wires. they are in the vertical plug on the left in the middle all right next to each other. never had a no start, but have had issues with intermittent miscommunication in data lines that trips a "stability system disabled" message and traction control light on during remote start, only on loaded vehicles like yukon and escalade. used plxr to fix because that interfaces with passlock wires instead of data lines and cleared up, so watch out for that. but as far as what you have, I would power the unit down, try reprogramming the bypass, still don't work. another awesome tip, tach can be found behind ipc only white wire in the harness. four 7mm in ipc and you know how easy the dash trim comes off. hope this helps now or in the future.

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I tell it like it is...

when in doubt, swap it out

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I tell it like it is...

Radio shack has a nice selection of resistors if thats all you need to get this guy on the road.

Actually I don't even think they carry them anymore. Last time I went to the local Radio Shack I had no luck finding PC mounted axial lead fuses. The guy said they are getting out of the component end of it in the stores because there has been such a drop in demand. You'd probably have to visit there website and place a mail order just to get a few resistors.

Anyways. Jeff when you get the truck back I'm sure you'll find the colored wires you were looking for originally. You are usually pretty good when it comes to this sort of thing. Oh yeah whats with the (damn Dodge comment on a 2004 GMC Sierra? Lol