JW2020

Pretty much since day one I’ve had issues with the temperature being incorrect, often off by multiple degrees. It appears as if the temperature is between 65 and 75 it’s fairly accurate, but when it’s really cold or really hot, the temperature reads 10 degrees higher than reality. It’s really annoying and the dealership has replaced the temperature probe 3 times now with no success. Anyone else experiencing something similar? Hoping there’s a fix or resolution to this. Thanks!

On the high idle part, was that generally during the cold morning hours or any time of the day you put it in park? The truck will high idle when it is cold outside in park. Just curious because I’m not sure the two are interrelated. But at 27K you shouldn’t need a new DPF, that’s for certain. Have them check the various bulletins out there and see if your truck qualifies for the module replacement. It couldn’t hurt and you certainly don’t want to pay for a new DPF out of warranty. That’ll add up to several thousand. I haven’t checked, but I’d imagine these would be considered part of the powertrain and have the longer warranty. The concerning part is the DPF is considered a consumable and isn’t necessarily warranty replaceable because improper maintenance and ignoring prompts could cause failure. I believe the fact they replaced mine under warranty means something else is going on and they know it’s a problem. Hopefully they get the part soon.

I have a GMC 3500 DRW that just had the DPF replaced at 8,200 miles which is unacceptable really. I use the truck to pull a 16K Fifth Wheel and was 550 miles into my trip when the reduced engine power notification came on and the MIL went off. The codes thrown were P2463 and P0422. What is interesting to me is that no warning messages or notifications to keep driving the vehicle for regens were given until this popped up. Also, during that 550 miles, nearly a full tank of DEF was consumed which makes no sense for multiple reasons. In fact, I think the truck uses way too much DEF anyway. So, it was using the DEF and not putting out any warnings whatsoever. Apparently code P2463 is set as a result of excessive soot loading. According to what I have found, excessive loading occurs at around 140% after its made multiple attempt to regen and you've ignored messages. According to the dealership, this sucker was at 237%. I don't understand how that's possible with zero warning and continued consumption of DEF other than some other issue, but it was operating normally according to the documents they gave me. However, the also performed a recall that I was never informed about. N202300791 Which is a reprograming of the Reductant Control Module, but when I asked if that could have caused it, they had no idea. So, i wanted to see if anyone else had a similar problem like this. I am concerned that while they replaced the DPF under warranty, if it wasn't the Module, then this could happen again. This truck is really only used for this particular trailer, so after getting it to the closet dealer, I flew home and got my 2020 GMC 3500 SRW and used it to tow the trailer back. Same exact trailer, engine and everything, except for the DRW part. The SRW only used about 1/4 Tank of DEF for the complete 600 miles to get the trailer and the 600 miles back with the trailer. So, that makes me wonder if there isn't something wrong with the Dually...although maybe it was the Module. Thanks in advance for any thoughts on this!

I had this exact thing happen to mine as well. The dealer was good about trying to figure it out and GM Engineering came out and checked everything but stated it was operating as designed. Apparently it is designed to melt your trailer. I asked about getting a 45 degree tip installed to push it away from the trailer but they couldn't give me an answer as to which point it could potentially void the warranty if something happened to the exhaust system. There's so much emissions crap in there now I don't want to piss off the system and start throwing any codes. However, you should complain to them. The truck is DESIGNED to pull fifth wheels and goosenecks. If the truck as designed is melting the trailer, then something is wrong with the design. They should compensate you for the damage so you can get it repaired. Then, yes, as others have suggested, just put a heat shield on the trailer. Works well. Also, I put over 1500 miles on my trailer before this happened. Basically flat roads to slight inclines do not seem to cause this issue. I believe it is because the speed of the vehicle on the freeway keeps it a bit cooler. For me this happened in the mountains of Colorado where airflow isn't very strong on massive uphill grades and regens are more likely due to the strain of the grade on the engine. Just my two cents, but honestly, this is stupid on GM's part. Just have the pipe exit the vehicle at 90 degrees like they used to...

Oregon, California, Pennsylvania. Not sure who’s open during this lockdown, but those are the trucks locations. Dealer and VIN noted in the screen shots. Also, I don’t remember you specifying 2500 or 3500. These are 2500’s.

There’s 4 of them nationwide and 1 in transit according to the Chevy inventory on their website. 3 white and 1 Cajun Red. The one in transit is Red Hot Red.

Yeah it does!

Are you using it for commercial purposes? Even in MA it appears to state it is exempt for private use. DOT regulations also seem to state that vehicles exceeding that threshold that are used for Commerce must register. Private use appears to be exempt from DOT - but states may require different drivers licenses when you add trailers (even for private use). There are states that offer CDL type licenses when your rig exceeds 26,001 GVWR, without the Commercial part for things like RV’s and such. Some states require that type of license when you have a 10K+ trailer even if the GVWR is less than 26,000lbs. The key to any of it is whether or not it is used in commercial applications. Some states force a commercial registration for pickup trucks regardless, but there are still exemptions for private use.

Is that the Dark Sky Metallic?