CEL came on yesterday, 2006 ODB trouble codes

[Fless]

Interesting..... I don't find any ignition module type parts in Rock Auto.

Yeah, not gonna find it. Go back and ask your guy what he meant.

 

[2006Tahoe2WD]

Yes, will do. I also tracked down info. on a bulletin.
TSB. #01-07-30-002D. This bulletin points to a bad ignition switch. I found a forum where a guy and the dealer chased the issue from the ignition switch point of view and it turned out to be a bad connection in the multi-pin connector going into the transmission. Interestingly enough that was what Nick (Nick's Transmissions) indicated to look at first.

 

[strutaeng]

Interesting..... I don't find any ignition module type parts in Rock Auto.

That's because your engine doesn't have such a thing! That's what I was trying to say.

There is a condition where if you have a misfire, the ECU won't enable torque converter clutch lock-up. That doesn't seem to be your case though. You don't have a misfire code and doesn't sound like your engine is running bad or missing.

So I'm curious what the shop is replacing...

Edit: oh ignition switch. Yeah, that could definitely be it!

 

[OR VietVet]

It's too bad that maybe OP does not have a few tools and a little knowledge because that ignition switch is easy to replace. There is an updated switch that is easy to verify. The old switch was all black. The updated one has a grey side on it. Unless of course they have switched back to all black.

 

[2006Tahoe2WD]

It's too bad that maybe OP does not have a few tools and a little knowledge because that ignition switch is easy to replace. there is an updated switch that is easy to verify. The old switch was all black. The updated one has a grey side on it. Unless of course they have switched back to all black.

The OP didn't know the ignition switch is easy to replace. Does the key stay the same? Where does the OP get the new switch? I'll look for a Youtube on it. At this point the most likely causes are:
- ignition switch or something very close to it?
- connection at the mulit-pin connector on the transmission
Thanks for the info.

 

[2006Tahoe2WD]

Does this video show the parts you are talking about?

 

[2006Tahoe2WD]

It looks like the switch is shown at 6:45 on this video.

 

[2006Tahoe2WD]

Is this the switch you are talking about?

 

[2006Tahoe2WD]

or I think it is this one....

 

[2006Tahoe2WD]

Looks like the GM part number is 15242754.
GM parts direct says - no longer available.

 

[2006Tahoe2WD]

or

Dorman 924-715​

 

[OR VietVet]

Looks like the GM part number is 15242754.
GM parts direct says - no longer available.

Use anything but Dorman, if you can.

 

[2006Tahoe2WD]

Use anything but Dorman, if you can.

Sure, but not sure how to find something else. I'll look again on RockAuto.
Other "makers" on RA listed: Rostra, WVE, SMP. I can't help thinking all these come off the same assembly line and/or use the same plastic/contacts tooling. I don't think the industry can support making three or four sets of plastic tooling. I could be wrong. I'll ask my mechanic where I should buy the part. I wonder if the dealer has a replacement part even if not officially GM.

 

[2006Tahoe2WD]

I put in a new switch and cleared the codes. I'll drive it a bit and see what shows. up.

 

[OR VietVet]

I put in a new switch and cleared the codes. I'll drive it a bit and see what shows. up.

Be aware that you should have aligned the gear teeth of the new one to the same place as the old one. BUT, if the old one was a tooth off, you may be installing a new switch with the wrong gear alignment. That happened to me on my girl's 2002 TrailBlazer. Luckily, I figured it out. IIRC, the gear alignment can have the fat spot showing and still intermittently start just fine but every now and then will not crank the engine unless you really roll the key. IIRC the fat spot should be hidden when all teeth are in alignment.

If needed, I can send you a link of a you tube that shows what I am talking about.

 

[2006Tahoe2WD]

Yes, I have the gear alignment issue. I finally got a spot that sort of works. The start position barely works. I was moving things back and forth maybe one tooth at a time and was having issues. E.g. couldn't find an off position where the radio would not go on. This is tricky because the radio will work when you turn the motor off - then you have to open the door to stop the radio from working. Something like that.

There must be some type of cool process to find the right alignment if you lose what you had when taking out the existing switch.

 

[OR VietVet]

Your radio is working correctly. Should stay on till open door or times out at about 10-15 minutes.

 

[2006Tahoe2WD]

Okay that helps.
I think if I have the radio on while engine is running...
Then turn key to off everything should go off except the radio.
If I open and close the door the radio will go off. ? Right.

 

[Fless]

Your radio is working correctly. Should stay on till open door or times out at about 10-15 minutes.

Ron, does your video from the other vehicle apply to this, or are they essentially different parts?

 

[Fless]

Okay that helps.
I think if I have the radio on while engine is running...
Then turn key to off everything should go off except the radio.
If I open and close the door the radio will go off. ? Right.

Yes, that's called RAP. Retained Accessory Power. Look it up in your owner's manual.