2007 diesel truck

Any luck with the fix?

I threw a code twice on my 2007.5 (new body style) Silverado D/A. Once on the George Washington bridge going into NYC. The truck went into a limp mode and it wasnt a happy time. Had an exhaust sensor replaced (forget the technical name of it) and about 3 months later it happened again. My local dealer had it for about a week, so that told me they were not having alot of luck diagnosing the problem. After that I soon got rid of it. I knew I would never trust it, plus I needed a dually anyway. Seems like some of the 2007s were plaqued with code isues.

. . .Do you have a tuner or programmer on the truck???? Does it happen when not towing / or towing??? Is truck truly "stock" or not. . .I get codes when I have truck programmed & towing on hot days; do NOT get codes towing on hot days when not programmed. . .FYI & YMMV. . . 07 LBZ

Scott16 wrote:
...I do know the 06 Chev/GMC Diesels were the last year with out any Emission systems.
Best of luck,
Scott

07 "Classic" HDs were pre DPF too (LBZ version of the Duramax)

George H wrote:
Classic or DEF model? Emission changes make these unique.

2007 isn't the DEF model. DEF didn't come along until 2011 model year.

With that combination of codes, I would first check the fuel pressure.

When did you last change the fuel filter??

Hello,
Mine 2007 LBZ. It gets a 2563 code also. Took it to a diesel shop. Cleared the code. They say it could be the sensor, vane or turbo. Going with the cheapest they would change the sensor since its unlikely a turbo problem. The problem code came back few weeks later without changing anything. Then it goes away after about 4 cycles of starting the engine. Been doing that for about 4 times now. Waiting to see it stay on, then taking it to the shop. I see no change in power or MPG. My mileage is 54K. PM me if you find the fix. Thanks

Also you might want to check the www.duramaxforum.com
A lot of posts about the DEF and issues. Don't know when GMC changed over for a 07 Truck. Might be DPF only. I believe the DEF went into the 2012 Trucks. I do know the 06 Chev/GMC Diesels were the last year with out any Emission systems.
Best of luck,
Scott

try looking through the forum posts at
www.dieselplace.com

Classic or DEF model? Emission changes make these unique.