Looking for help. I had 9 bulbs out on the IP so I replaced all of the bulbs. Now all work except for the IP turn signal bulbs and the bright light bulb. (they worked prior to replacement)

All the contacts on the sheet look good. Anything I can try? I put old bulbs back in, but the same issue.

 

Please don't make up acronyms like IP. Confused the crap out of me for about 5 minutes.

You can clean all the contacts by gently rubbing with a pencil eraser. (Sandpaper is too harsh, don't use sandpaper).

If you still have problems then isolate the issue by physically checking for a break in electrical continuity of the circuits. No wiring diagram needed, you can see and follow with your eyes every trace of copper on the printed circuit sheet.

 

Thanks! I will go try that.

 

And for what it's worth, my Firebird blinker and brights bulbs share the same ground trace. Your Camaro layout is substantially different, I don't know if it's the same way but if it is then that would be a common clue that links the problem for all three bulbs.

 

I cleaned every contact and no resolve. I have looked at the complete contact sheet and can se zero defects. Really strange.

 

I was thinking more along the lines of using a multimeter to check continuity. Be sure to use that pencil eraser on the harness connector pins too, those tin coated pins is where you get a lot of the oxidation and poor contact to the sheet.

If everything on the board is fine, then I would maybe measure continuity of the grounding pin in the connector to chassis.

 

Cleaned the connectors with Electrical cleaner and some emery cloth and got the Hi Beam indicator and the right turn signal indicator back. Getting closer! Thanks!

 

Cool

 

IP (Technically: "IPC") is a legit GM Term.

"Instrument Panel Cluster" is the proper GM Terminology for the Pictured Assembly.


In Modern GM Vehicles, the IPC is it's own Control Module.
LMAO! But so many things have been turned into Control Modules in Modern GM Vehicles...

The Full Size Luxury SUVs have over 50 Control Modules onboard.