installed new ignition switch now this......

[littledane]

Ok so I had a pesky passlock light that stayed on all the time a was draining my battery. I finally put a new battery in and it threw a CEL for a faulty ignition switch. I ordered an AC Delco switch and installed it today. Now I have this problem........05 trailblazer ls with 125k miles.

[video]http://youtu.be/WVY6s0gQH7s[/video]

 

[The_Roadie]

What was the exact code it threw?

That looks like a loose ground G201 for the dash area that's at the right side of the transmission tunnel at the bottom of the center dash stack. Or some other intelligent module jabbering on the data bus that was pushed over the edge into non-functionality by the battery swap. Data comm problems are difficult, but possible to troubleshoot. Assume you have a meter and some electrical troubleshooting experience?

 

[littledane]

Im not sure of the exact code it threw. I took it to advanced auto and had it checked. I do have a volt meter but I dont have very much trouble shooting experience.

 

[littledane]

In the video the ignition was off and the key was out.

 

[The_Roadie]

Oh, you didn't share that! I bet your new switch is misaligned, and off by one tooth.

 

[Texan]

If the ignition was off and the key was out in the video, the gear on the switch must not be
aligned correctly. Search for threads on installation of this switch.

 

[littledane]

Yeah I did forget that part....... I was trying to post and chase a 1 year old around. lol. I went back and looked at the old switch and I thought I had it aligned the same. I just checked the ground and it was tight. I will pull the swith out again in the morning and look. I really need to get it running soon because the transmission in my wifes Vue is dying a slow and painful death.

 

[RayGumm]

Yeah I did forget that part....... I was trying to post and chase a 1 year old around. lol. I went back and looked at the old switch and I thought I had it aligned the same. I just checked the ground and it was tight. I will pull the swith out again in the morning and look. I really need to get it running soon because the transmission in my wifes Vue is dying a slow and painful death.

That slow and painful death will at some point turn into a very quick and even more painful death.

Also, if the dash gauges are all active and freaking out with the key out, you might have a dead batt in the morning. I am new here, so please correct me *cough*roadie*cough* if I am wrong, but you might consider disconnecting the battery to preserve its life, unless of course I am wrong, in which case, don't. If you DO need a jump, make sure to search here for a thread on the proper method to do so (again, new here - don't know the procedure myself), because apparently doing it the wrong way can fry a whole bunch of fuses, and that's a bad thing.

 

[littledane]

I did disconnect the negative terminal on the battery.

 

[littledane]

So I just went out and messed with the switch some more. The problem I was having has seemed to have stopped but now my radio stays on but I have no sound. Could I still be a tooth or ywo two off?

 

[The_Roadie]

I would check it with a voltmeter now to be sure. You might need to pull the radio fuse for a minute or two to make sure it resets. Is this the ONLY issue remaining?

RED on the ignition switch is 12V, fused by underhood fuse #34, and feeds the following three circuits:
White is hot in ACCY, RUN, START
Orange is hot in RUN
Yellow is hot in START

RED/WHITE is another 12V, fused by underhood fuse #36, and feeds two circuits:
Brown is hot in ACCY, RUN
Pink is hot in RUN, START

 

[littledane]

It appears to be the only problem now. I drove it up and down the street and everything seemed ok. Ive got an aftermarket radio as well.

 

[Mooseman]

What kind of interface did you use? I've had a couple Axxess GMOS-04 die on me like that after disconnecting the battery. It would just stay on and not get any sound.

 

[The_Roadie]

Ahhhh, what brand adapter? Scosche are reportedly built from used iPod2 parts ground up in a blender and recycled into adapters that work (maybe) for a month or two and then die and drain your battery and make your instrument panel go nuts.....wait.....those are the symptoms you had.

Wish we had remembered to ask you on Day 1: Do you have an aftermarket radio with a control/power adapter that's tied to the data bus?

 

[littledane]

I dont remember the brand. I might have been a scoshe.

 

[littledane]

What brand would you recommend so I can go ahead and order one just to be safe.

 

[Blckshdw]

I had a couple of Metra/Axxess GMOS modules go back on me, I had heard about the unreliability of Scosche, so I opted for a PAC OS-2C module. Has been great for the last couple of years.

 

[littledane]

The one I have has been in for about 3 years now.

 

[littledane]

Thanks I just looked that one up. I need the one for the BOSE system but I found it on a few sites for a fairly good price. I will be ordering it hopefully soon.

 

[Mooseman]

I had a PAC and didn't like it because it used the high level speaker outputs which didn't sound as good. The GMOS-04 used line out (RCA connectors) so I just went back to it. Using another HU so I'm hoping it was my previous HU that caused it to die but I might still pull the fuses if I have to disconnect the battery just in case.

 

[littledane]

Thanks for all the help guys! I knew this site would be better than that other one. I finally got around to pulling my deck out tonight to see what interface I had. I have an Axxess gmos-04. I put the factory radio back in and everything is working as it should. I guess I will try a Metra when I have the extra $$ to order one.

 

[Mooseman]

I'm pretty sure Metra and Axxess are the same. Just the name and packaging changed.

 

[littledane]

what would you recommend?

 

[02TrailBlazer]

Had a GMOS-01 go out on me after 3 months, it started messing with all sorts of stuff in addition to having a .75 amp draw no matter what.

I feel your pain.

 

[littledane]

Think im going to just leave the factory deck in and sell my tv. Its so much easier that way.