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Diesel Truck Parts And Accessories

2006 - 2007 Chevy/GMC 6.6L LLY/LBZ Duramax

For 2006, GM upgraded the trucks computer system which made it possible to have more injections of fuel each combustion cycle, and this is what distinguishes the 2006 LLY from its predecessor, the 200 ... read more

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For 2006, GM upgraded the trucks computer system which made it possible to have more injections of fuel each combustion cycle, and this is what distinguishes the 2006 LLY from its predecessor, the 2004.5-05 LLY. This software upgrade was necessary in order to meet the emission standards for 2007. With a class leading 360 horsepower and 650 foot pounds of torque these trucks are quite impressive! The LBZ engines have many internal upgrades, such as a lower compression and a taller deck height, in order to handle increased boost levels, thus additional power, which is why it is a great platform for building a performance monster! We have numerous proven power combinations depending on exactly what you're looking to get out of your truck. If you are unsure of what parts are right for you, don't hesitate to give us a call and we would be happy to assist.

Products in this section are designed to work on 2006 and 2007 (classic body style) 6.6L GM Duramax equipped trucks unless otherwise noted.

Use your VIN to verify if your engine is an LLY or LBZ

To verify, check the 8th digit in the VIN number:
If it's a D you have the LBZ engine
If it's a 2 you have the LLY engine

We get a lot of calls and e-mails each day with various product, vehicle, and installation questions. Some are completely off the wall and can even catch us off guard at times, but many others are fairly routine, so we thought we'd post some of the most popular questions that can hopefully be a good resource for you.

Q: I have an EFILive AutoCal from another Duramax. Can that same tuner work on my LLY or LBZ Duramax?
A: In short, yes! Autocals get linked to the tuners computer so if you are not getting the same company's tunes, you must get it unlocked first by the original tuner so it can be locked to the new tuner. After that, a new VIN license must be purchased to open up a slot on the tuner. And tunes must be purchased for the new vehicle. They would be sent to your e-mail along with instructions to load them onto the tuner.

Q: I'm looking at an exhaust kit on your website, but it doesn't state which cab and bed configuration it fits, will this fit my application?
A: In most cases, unless it is specifically stated as fitting a certain configuration, all exhaust kits on our website will fit all cab and bed lengths. Further, most kits will not fit cab and chassis applications unless otherwise noted.

Q: I'm looking at this 5" (or other) exhaust kit, but my truck only has a 4" exhaust now. Does this 5" exhaust include an adapter / reducer?
A: Yes, the exhaust systems we sell will adapt down to fit the application at the designated starting point (turbo back, cat back, DPF back, etc.) for a hassle free installation.

Q: What are EGT's?
A: EGT stands for Exhaust Gas Temperature, which is the temperature of the exhaust leaving your engine. This measurement is typically measured before the turbo to ensure you are not overheating components. For most applications, we recommend not exceeding 1300 degrees.

Q: Do you offer smoke and lope tunes with any of your preloaded EFILive AutoCal options?
A: No we do not. In short, both smoke and lope tunes create these results at the expense of the overall reliability of your engine. The tuning companies we have chosen to partner with are top notch and are most intested in creating increased power, fuel economy, and overall drivability. We at Diesel Power Products invest a substantial amount of time and effort to ensure that the products we recommend are in the best overall interests of our customers and their trucks, and unfortunately, these types of tunes do not align with that overall goal.

If you've got a question about your Duramax, feel free to give us a call at 888-99-DIESEL and we would be happy to assist.

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