lerbud

It could be the rear headrests making noise. Fold them down and see if that fixes it. If that works spread the headrest posts out a little and reinstall.

These are the seat covers I bought. They have a GM part# on each piece so it was easy to match up since there are no instructions. No special tools needed to install. Everything these days clips or zipppers in place. The hardest job to me is the front headrest cover install. The rear headrests were super easy. https://www.ebay.com/itm/2019-2020-NEW-TAKEOFF-OEM-CHEVROLET-SILVERADO-CREW-CAB-LEATHER-SEAT-COVER-SET/223803853359?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

I installed oem leather take offs I bought on ebay. They fit perfect with no issues installing them. I have done a couple other trucks so I knew what I was in for. Only real snag I ran into was how to unplug the front seats. I never figured it out so I loosed the bolts holding it down and did them in the truck. You can google how to do the K2XX trucks and the process is very similar. On the rear seats the T1 has an upper part of the seat and a lower part. I would watch this video for better info:

Mine is off too. Not really bothering me too much.

If the rears are leaking you will have to pull the tranny to get to them.

The bottom of the console lid can be pryed off to gain access to the latch. Start prying in one of the corners and it will pop right off.

Hope this helps:

I put these on my truck. Its a GM part that they charge $400 for at the dealer and only $192 at Summit. https://www.summitracing.com/parts/lnd-24010562/

I trimmed it as best I could before installing it. I used scissors. It is hard to cut once installed.

Its not too bad. I did the 3M ppf myself and it turned out well. I did not get the pre-cut stuff. I just bought some rolls of 12", 6" & 4". Cost less than $100 and looks fine. I did they same on my old Sierra and wife's car and they held up fine. I also recommend putting it on the headlights. It saves them from wear and tear and the plastic from fading.

You can get these for cheap and they are decent covers: https://www.ebay.com/itm/2019-Chevy-Silverado-1500-Crew-Cab-Clazzio-PVC-Leatherette-Black-Seat-Covers-/163870462174?_trksid=p2385738.m4383.l4275.c10#vi-ilComp OR you could get these and install yourself and stay under $600. https://www.ebay.com/itm/2019-Chevy-Silverado-Sierra-Crew-Katzkin-leather-seat-cover-set-Rear-storage/372708316631?hash=item56c72595d7:g:TlgAAOSwxBldJN-U

These guys are selling the 18" reps and show a 26 offset. https://www.oewheelsllc.com/CV34-18085-black-rims-fit-Chevrolet-Silverado-1500-Trail-Boss

Mine jingles too but not going to take it in until someone finds a fix. Not worth the hassle at this point.

Probably just one of those weird electrical deals. I wish you could see the fuel gauge level when acc is on. I like to listen to the radio and keep an eye on the fuel level so I know when to hop back out at the pump.

This is what I used on my 2016 leaf spring noise. It stayed on there forever and got rid of the noise. Maybe this would help: https://www.amazon.com/Super-Lube-11016-Aerosols-Dri-Film/dp/B07DCDYM26