I have a 2006 chevy 1 ton in and it's a 6.6 LLY Duramax diesel, seems to run ok but a few codes exist, and we are more geared for the heavy commercial trucks, so any help appreciated! #1-- body control module code B2610. #2-- supplemental inflatable restraint code B0103. #3--- engine control module P2563 turbo boost control position not learned. #4--P0672 #2 glow plug control circuits. #5-- P0673 #3 glow plug control circuits. #6---P0676 glow plug open or short to high resistance... LLY help please ..read more

As the title says, does anyone have a wiring diagram for the seats or know where I can find it for a 2011 gmc sierra 2500hd Denali? Thank you all in advance ..read more

My son Wrecked front end on an 06 Sierra 2500 Duramax and looking at buying an 05 sierra for a parts truck, will the fan,intercooler, rad, grille and bumper, light housing be interchangeable? We know its not ideal cause the engines arent the same but looking for any advice on swapping out front end and body parts from 05 to 06. Thanks ..read more

Had a major accident last week. I was rear ended by a Ford-mounted Class-C RV then in turn rear ended the car in front of me. I hit him hard enough for his rear bumper to become lodged in my front bumper. My airbags never deployed even though OnStar came on immediately a said they had received a signal that they had. Fortunately, I was not injured but it its a little unsettling to know that had it been more serious, I would have had none of the extra safety protection that GMC supposedly... 2017 Denali 3500HD Airbags Failure ..read more

Anyone know what tool I can get to get this sucker reinstalled? It has 3 notches, and I can't get it past the first one, though I think it's only supposed to go into the 2nd notch. I even tried a small sledgehammer and a brass punch, but still could NOT get it to move past that first notch. Any other ideas on how to get it installed properly? A guy at one of the auto parts stores, where I checked if they have a tool, but they didn't, though another store had one for $95, the guy... Fuel pump lock ring reinstall ..read more

Hey Everyone, I have a 93’ obs k1500 currently 6.0 LQ9 swapped with an NV4500 got a wrecked 2500HD w/ 6.6 and I want to know if the nv4500 will work or even fit, I wouldn’t mind going to a nv5600 if need be but trying to stay standard ..read more

I have a 2018 GMC 3500 HD, 6.3L Duramax with Allison transmission. About 18 months ago I started to get a terrible vibration that sounded like it was coming from behind the glove box. It only happens when engine is under load between 1400 and 2100 rpm’s. No vibration at all when revving the engine at any rpm in park or neutral. The vibration going up hill or pulling a trailer will drive even the sanest person nuts!!! The warmer the engine the less noisy. Situation began after 60k mile... Vibration in dash between 1400-2100 rpm ..read more

New member here. I have a 2015 LTZ Z71 and under 100,000 miles. Recently I was on a trip towing a 12000 lb 5th wheel in cruse control and as I was going up a hill it kicked in to keep me at the same speed and my check engine light came on. I stop at a chevy dealer and they checked and code of P2599 came up stating (turbo Vane Position Performance-High Position Test Failed since DTC, Current DTC since power up). they couldn't get to it for over two weeks so they cleared the notice. No... Turbo Problems ..read more

I’ll try to keep this as short as possible and still explain the situation but I am looking for some troubleshooting help for my 2016 LML. For a while now I have occasionally had moments where I would notice a dead zone in the throttle most noticeably found in 1st gear starting from a stop where according to my CTS3 my throttle position could get up to 10-15% sometimes before the engine revved at all and therefore propelled the truck forward. I have also seen instances (less often, maybe... LML Throttle Hesitation/Driveline Dead Space ..read more

2008, 2500 HD GMC Duramax, tires 285/70/17 not towing anymore looking for softer ride (without buying new tires). Would bigger shocks or better ( have oem) shocks do it? Suggestions on shocks etc. ( Only 98,??? original miles on truck ..read more