Electrical Questions for a 2011 PPV

[PopoPackage2011]

Hey all,

2011 PPV

Couple of questions.

When I hit the brakes, only the 3rd brake light works. Passenger and driver side brake/reverse lights are all working when the lights are on. Also, passenger side rear turn signal does not work-when I hit it, it blinks fast as if there was a short/the bulb is out. Where should I start? Brake switch by pedal? Not sure about a fuse because of the 3rd brake light working fine. All front lights fully operational.

Second, I am only getting heat in the rear, how to troubleshoot if its the vent door actuator or the front blower fan? Fuses looked good....

Any help would be greatly appreciated, Thanks

 

[Fless]

Download a copy of your Owner's Manual from GM's site. Find the fusebox diagrams and charts, and note that the driver's side interior fusebox has separate fuses for the left, the right, and the CHMSL. Three different fuses.

 

[Fless]

Bulbs been verified as good? Have voltage to the bulb sockets?

 

[PopoPackage2011]

Digging around underneath steering wheel, anyone recognize these purple wires or this device? Maybe rear speaker or door lock wiring? The spliced out thicker gauge wires lead to nowhere (device is not hotted up and bypassed)

 

[PopoPackage2011]

Bulbs been verified as good? Have voltage to the bulb sockets?

Bulbs good, as they work fine when lights are on at night. Just no brake light signal except 3rd brake lite. My sincere apologies for replying all weird, still learning how to use this forum properly.

 

[blackelky]

Digging around underneath steering wheel, anyone recognize these purple wires or this device? Maybe rear speaker or door lock wiring? The spliced out thicker gauge wires lead to nowhere (device is not hotted up and bypassed)View attachment 413449View attachment 413450

Hell no lol. Why didn't they solder those wires. That department probably paid them thousands of dollars for that

 

[PopoPackage2011]

Hell no lol. Why didn't they solder those wires. That department probably paid them thousands of dollars for that

The purple wires are in the OEM harness. The device is probably some aftermarket fuel system thing.

 

[mattbta]

The purple wires are in the OEM harness. The device is probably some aftermarket fuel system thing.

Seems to aggregate fuel related data - consumption, MPG, etc for asset management.

FuelFocus: Fuel Management Software

AssetWorks FuelFocus is a fuel management software that saves money, reduces shrinkage, and provides powerful data analysis. Optimize fuel efficiency with FuelFocus.

www.assetworks.com

 

[metal man]

Did this ever get resolved?

I have a 2011 Yukon xl 2500 doing the same thing. High Mount works, left and right stop lights don't (I suspect they didn't work when I purchased).

I even tried to see if it had a surveillance mode, tried putting the parking brake on and if when starting, didn't seem to make any difference.

Left and right stop wires (pale blue) run uninterrupted from factory fuse block to each tail light connector and into the light.

I'm stumped.

 

[Fless]

Did this ever get resolved?

I have a 2011 Yukon xl 2500 doing the same thing. High Mount works, left and right stop lights don't (I suspect they didn't work when I purchased).

I even tried to see if it had a surveillance mode, tried putting the parking brake on and if when starting, didn't seem to make any difference.

Left and right stop wires (pale blue) run uninterrupted from factory fuse block to each tail light connector and into the light.

I'm stumped.

Do you have voltage at the fuse block when the brake pedal is pressed?