1st diesel truck

Hi RGA, hope you are feeling better by now... If by chance you come across this revived thread, you have me wondering on how are the brakes holding up on the new 2025 AT4X 2500 HD? Any early signs of wrapping going on with say either yours or anyone else's viewing this thread? My 2024, 2500 had early milage signs of the wrapping coming on and then have gotten really bad at 18.5k mileage. In studying this growing situation of failing brake syndromes, though the following info is for the 1500's, it sure seems as if the 2500's followed suit of the same bad brake material defects. GM Investigates Premature Brake Pad Wear - The BRAKE Report https://www.duramaxnews.com/post/premature-front-brake-pad-wear-updated-front-brake-pads GM-Front-Pad-Wear-document-1.pdf The biggest brake rotor myth: Debunking the warping fallacy - Aftermarket Intel Thank you...

The first following link is a must read for photo visual's of where to look for coolant leaks on the l5p engines, http://sandyblogs.com/techlink/?p=7510 http://www.duramaxforum.com/forum/l5p-tsb-service-bulletins-recalls-updates/893042-l5p-bulletins-recalls-updated-calibrations-3.html#post11062898

Just getting to 1,500 miles and the coolant message hasn't returned since they topped of the coolant and bled the system of air. From my perceptive (plus take notice the cold temperature gauge reading in enmity02 photo above) the coolant message may only come "on" when the engine is first turned on while still "cold" plus on ours, I did take note of about a 5 - 10 degree fluctuation while hot which went from normal 210 down to almost 200 then back up.... All of which is now gone since the coolant service.

Anyone else starting to get brakes that squeal on their 2017 2500 HD ??? Just started hearing them a bit over 1100 miles now. PS, @GM Customer Service, please check over and clear out some of your private messages as they seem to be at their max limit due to I keep receiving the following message while trying to send you a private message: Clearing either some or all of them would help allow new messages to come in.....Thanks.

Hi all, I just wanted to add something's to see if it may help others out with the low coolant concerns. Though the coolant level may not look low, it most likely is and there probably is an air pocket in the cooling system too...And it most likely left the factory like that... It took two tries for my dealer to look further into the situation regarding my same coolant level low message I had. Bought my 2017 GMC denali 2500 HD 6.6L on 5/6/17 and that night the coolant message came on....Brought the truck back the next day, service writer opened the coolant cap which turned off the message for two days and they/he didn't "see" the message on the dash or in the scan tool history. The first time around they did some inspecting, testing and I thought some air bleeding too but may not have at that time I'm suspecting now. Two days later while still cold in the morning, the message came back on....Got to work, shut it off and message went away while warm/hot.....I also noticed from the beginning my temp gauge would fluctuate 5 - 10 degrees at idle or RPM which typically helps indicate possibly some air in the system. But the first thought/consensus was we just all figured it's probably just a float type sensor moving with expansions from hot to cold, etc. and it would need a new sensor but they didn't just want to add a new sensor for no true reason until tested better. Let the dealer keep the truck a few days to check things over. Turns out GM is aware of this potential issue and "I believe" they may even have 2 types of written TSBs regarding this coolant message due to what my service tech wrote on my work order when I picked the truck up and so far no message on the dash. Below is a copy and paste of a TSB by a member on another board that is posting some copies of these TSB's for the new L5P engines...Search online, ( L5P TSB (service bulletins, recalls, updates) Postings of Tech Service info for any New L5P engine issues.) for other info such as this one 'And things like very high oil PSI while cold which is normal and nothing to worry about according to GM. My service tech wrote the following: Test drove 5 miles and no low coolant light on. Checked for TSB's and found 17-NA-110 for this exact concern. From factory they are under-filled, Allowed to cool down completely and added 1 quart. Got to operating temp as to bleed air pockets and fill surge tank. Allowed to cool again and rechecked coolant level. It was low a quart from air bleeding out. No leaks present anywhere under vehicle or see any signs of leaks. Just air pocket. Test drove and no lights came on. Notice the above TSB number 17-NA-110 and then below # PIP5487 which leads me to believe there may be two notices from GM on this. I'll let you know here if my coolant message comes back on anytime soon but I honestly don't think it will + I haven't really yet noticed as much of an coolant temperature fluctuation. The truck is getting ready to turn over to 500 miles soon but the first half of them seemed to be going back and forth to the dealer thus far. But that's okay because it gives more reasons to just drive this awesome truck.