RJP44

My rear door ajar warning has been stuck on for a while. I assume its a door switch but havent had time to dig into it just yet. Where should it be located? Is it in the door jamb or is the sensor inside the latching mechanism?

Anyone ever use the spray on truck bed liner on their frames? Got a couple spots where the factory coating has flaked off and was going to clean it then hit it with rustoleom rust reformer and instead of their undercoating I was thinking what about bedliner? your thoughts?

truck is a 2015 2500hd crew cab 4x4. Ive started to notice clunking in my rear end if I go over bumps or uneven roads. I initially thought it was my hitch with a bad fit, so removed that and anything possible in the bed and yet the noise still exists. The truck drives normal no vibrations at all and everything i can see under the truck seems ok at a quick glance. Not sure where to go from here or what to check next? Anyone experience these issues?

Truck is a 2015 2500hd with 65K on it. Running kryptonite uca and ball joints that were just installed about 8k miles ago as well as bilstien 5100s. I really only notice it when i hit a bump slow turning slightly. From what I can tell both upper and lower ball joints seem tight and in good shape. The keys are not over cranked either they could go up another 2" if I want but i felt I should keep it at a safe height. All boots are solid without any holes. Is there anything else fairly common I should check for on these trucks?

Will I need to pull the shark fin off entirely or should I be able to see everything once I drop the headliner?

It hasnt rained much where I am. Truck is a 2015

The radio is saying XM radio No Signal, reception may be blocked. Called Sirius and they are pretty sure there is something wrong with the radio / antenna on the truck, as they have sent several refresh and activation signals with no luck. Has anyone dealt with something like this? Its not getting any signal at all and it was working fine a couple days ago. I also noticed that the info for the stations and songs playing on the AM/ FM side is not showing the details. I guess there is a satellite module somewhere in the truck. ANyone know where that is located or something i should try to get this to work without going to the dealer?

Has anyone heard an MSRP on a trail boss yet?

For those who get this done under warranty, which warranty exactly are the dealerships saying its covered under? 3 year 36k bumper to bumper or is this part of the corrosion warranty? My 2014 could use a touch up in a lot of spots and was going to call the dealership tomorrow and see what they say. Currently it has 35k so its under the 36k mile warranty but its getting close.

Any lift or tbar crank?