2008 Tahoe..Parking lights issue..BCM issue?

[cmyhre85355]

I have wiring schematics. Is your problem in the front or rear?

Front


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[Bill 1960]

Not sure if these will be legible enough. If it's not I can PM you some PDF's I believe.

 

[cmyhre85355]

Not sure if these will be legible enough. If it's not I can PM you some PDF's I believe.
View attachment 266775 View attachment 266776

Would you mind pm me the PDFs.


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[cmyhre85355]

I’ve been playing around with the Tech 2 (vxdiag plus tech2win on a laptop) when I command an action such as turning on fog lights,should it illuminate on the IP or no? Also I’ve been getting random errors that say i have the wrong vehicle selected.

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[cmyhre85355]

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[cmyhre85355]

This would be hard to diagnose without Tech2. There are very cheap way to get your hands on one.

Any suggestions on inputs to test it with a Tech 2?


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[cmyhre85355]

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[Big Mama]

@swathdiver may have an idea.

 

[Fless]

I see from your first post that you have a 2008 Tahoe LS. In order to select the correct vehicle in the Tech 2 you need to know if it's 2wd or 4wd, along with some of the options (probably like the radio and heater controls, at least it's that way for my '04).

What are your vehicle details and what specifically are you selecting in the Tech 2 menus?

Is the issue long-term or has it just started? Any recent work on the vehicle?

 

[swathdiver]

...when I command an action such as turning on fog lights,should it illuminate on the IP or no?

My experience has been, yes, it should illuminate and on mine at least, the menu in the Tech-2 will have a line for showing that the light is on or off too. Every year's menu, even in the same generation can be different. On mine, I can select "C" for RWD and still access all the BCM features just fine, and it does not see any of the 4x4 stuff. But it is important to select the kind of radio or suspension if it asks to configure the menus properly.