passlock rookie, 2005 grand am

I wish I'd found this site years ago. A great resource.  Very sorry if i'm covering a topic already addressed here.

I've always done all my own work myself, weather mechanical or electrical. I should have gone to get some official credentials if I'd had the time and funds when it mattered.

My current project is a r/s system on a 2005 Grand Am.  It is a Jensen JKRS3 (an Audiovox brand).

Before I started I checked the key for a transponder and seeing none I proceeded as normal for a basic installation. At about 2/3 the way in I realized the vehicle had a passlock system. I don't do this for a living and by fluke I've never encountered a GM Passlock system before. So knowing that I would need a Passlock Module eventually I continued the install just to get it done.  As expected, the R/S tries to start - it engages ignition and attempts to crank with no result. It tries 3 times then transmits a "no-start" to the remote.  No problem so far.  But I have some questions:

- The switch on the Grand Am is on the dash, not the steering column. Harder to access. there are 2 harness plugs into the switch.

1) From these 2 harness plugs I can see only 2 small guage wires. One on each plug I think.  Everything I've read elsewhere suggests that the passlock system uses 3 wires. I've used most of the other heavy wires already. So without having a module and the wiring diagram for it I'm already apprehensive.

2) Knowing that I need to buy a bypass module, who'se should I buy? Audiovox has thier own but should I go to a retail store or get one on-line from anaother source? Reading some of the posts here I've seen that people have had some issues with some of the Passlock modules and the connections.

I'd be grateful for any input on this and I thank you.

- Jay   

Glad to have my first reply from a credible source. And thanks for correcting my topic. I will research the GMBP - And no, I am not loyal to Audiovox. I will use the best piece available for my given application.

Again though, I am concerned about having only 2 small guage wires from the ignition switch Vs. the 3 I've read about. Hopefully the module diagrams (whichever I go with) will address this. But in the interim I'm still a little nervous about it.   This install is for a particularly important customer... My Mother!   LOL  And she uses this to pick up my girl from Kindergarten every day when we can't. so I need this stuff to run right everytime with no down-time for the install.

Again , Thanks.

k, then

3 prompt and credible responses all suggesting the GMBP - a no brainer I would think and with only 4 easy connections to make.  AND I don't have to pull the instument cluster and bezels yet again to get at the switch! Yay! I scratched the glass slightly last time I had the cluster out.  The GWR connection I can make at the R/S brain, yes?

So now I just have to source out and get my hands on a GMBP.

I'm kinda nervous about Extreme 1's comment, though.  Aside from the Ign. harness plugs side-by-side there is no other harness connection at all on the switch.  There is, however,  A heavy, rigid cylindrical connection to the other side of the switch sort of at the rear. It resembles a mechanical speedometer cable that would go to the back of an instrument cluster, but smaller perhaps.  I assumed this to be a mechanical neutral safety switch cable that runs to the shifter.  I tried to unplug it to give me some slack on the Ign harness but the clip releases were so hard to get at from that angle that I just left it on and tugged the switch as much as it would let me to get at the harness wires.

So now I'm wondering if I should be concerned about this.  I suppose it could be an electrical connection but it was awfully rigid. I checked the owners' manual to confirm and it did mention Passlock, though not in great detail or what version.  Could someone shed some light on this and tell me if I have an issue?  If you guys say to just go ahead and install the GMBP regardless, then that's what I'll do then.

I'm really grateful for you all taking a minute to respond to me - Many Thanks.