Bizon14

By bed/cargo light mod, do you mean adding the diode to the BCM?

It started with P219a once ever few weeks or so when it was cold out. P219a started coming on more frequently, even when it was above freezing. Then I started getting P050D "Cold Start Rough Idle", and I even had a few codes for misfires. I replaced the spark plugs and wires a few months ago and it didn't change anything. I decided to try changing the fuel injectors once it got to the point where I couldn't go more than a couple days without the check engine light coming on. I was shocked to see how dirty the old injectors were compared to a brand new one. It took about 5 hours to change the injectors with a little bit of help. So far, so good! I have also seen an increase in fuel economy.

I have this problem too and like almost every other post I've seen, I can't find the root cause. It seems to only happen when the engine is cold. I even left the truck at the dealer for a whole week last winter and they weren't able to come up with anything.

Did you ever end up finding out what the resistance of the elements were supposed to be?

I've thought about doing this but I've seen enough people with leaky roofs online and decided not to mess with it unless it's needs to be replaced. Unfortunately I have a 2014 and I'm assuming the previous owner didn't replace the antenna so I probably have the only style seals. Sent from my SM-G973U using Tapatalk

Appreciate the link! I will look into it a bit. I have found a handful of sites that sell it, but almost all of the sites have terrible ratings with a lot of people claiming that they have been waiting several months and are not able to contact the sellers.

Awesome, thank you for the direction! Now to figure out if it is going to be easier to find just the harness 23327843 (not interested in the OEM lights), or if it is going to be easier to use the dummy plug to make a harness.

Okay that makes sense. He took a look and it said the dummy plug is a 6 pin, the only problem is that I have found the two different part numbers for the harnesses, but I have yet to find a good description of which harness is which. I have a hard time blindly trusting the fitment guides online, but from these I am thinking that the 6 pin harness should be 23327843, and the 8 pin harness should be 22878806. You wouldn't happen to have the part number for the 8 pin harness you bought would you?

I am looking to help a buddy wire some lights in his 2015. I understand that GM changed the plug from 6 pins to 8 pins at some point and I am trying to figure out which one he will need to get. Did you order the 8 pin plug when you really needed the 6 pin plug?