Truck went in for 4 recalls on Monday. Got truck back last night Tuesday. They got the tailgate pins realigned and the grid heater replaced . The could not do the particulate matter sensor or module because parts were on back order. They told me they had the parts when I set up the appointment 6 weeks ago.So I can’t tell under the hood that they did any work at all. Did they just check the killer bolt not loose. Or replace the grid heater . One thing about going to the dealer the ball gets passed around so much nobody really knows what went on or didn’t. And it’s all in the computer to farther confuses it all. So how hard is it to replace the grid heater. How long would it take? Do mechanics and dealers cheat the system and say they replaced something and don’t and still get reimbursed for the work.I just really hate taking my truck to the dealer. I always have a bad feeling I have been taken after going to the dealer.All servicing will be done by my Indy diesel shop At least I think I can trust them??