![]() When you pull up a vehicle’s Carfax, you can often also see it’s service history and get information on any major mechanical overhauls. If you don’t know the original owner, i’d recommend looking through the paperwork you received when you bought it, or you can look up it’s service history online. If you recently purchased your LB7 and it has lower mileage, it could still have the original injectors. That doesn’t mean the LB7 Duramax you own has this problem corrected though. Even GM acknowledged their problems when they corrected the original injector design and issued a 200,000 or 7-year warranty on the updated model. ![]() The most notorious LB7 Duramax problem is their original injectors. Here is our guide to the 7 most common 6.6L LB7 Duramax problems and how to fix them. With some aftermarket solutions, you can fix most of the 6.6L LB7 Duramax’s most common problems. ![]() That doesn’t mean the LB7 Duramax isn’t a great truck though. As with anything brand new, there were some kinks that needed to be worked out. As successful as the 6.6L LB7 Duramax was however, they do have their fair share of problems. These diesel engines are where the Duramax started, and they have been so successful that the Duramax are still used in GM HD trucks today. The LB7 Duramax engine made its debut on Chevrolet and GMC HD trucks in 2001. Power is sent to the rear or all four wheels through an Allison 1000 six-speed automatic transmission and a dual-range transfer case.What Are The Most Common 6.6L LB7 Duramax Problems? The oil was changed in preparation for sale. The 6.6L LBZ Duramax turbodiesel V8 was factory rated at 360 horsepower and 650 lb-ft of torque. The digital odometer reads 10k miles, less than 50 of which were added by the selling dealer. The leather-wrapped steering wheel fronts a 120-mph speedometer, a tachometer with a 4,700-rpm redline, and auxiliary gauges for transmission temperature, engine temperature, battery voltage, oil pressure, and fuel level. Factory equipment includes power-adjustable front seats, an AM/FM CD stereo, Bose audio, rear-seat audio controls, dual-zone climate control, cruise control, and power windows, mirrors, and locks. The interior features gray Light Titanium leather joined by a matching dashboard, doors, and carpets. The rear suspension has been modified with airbags, and braking is handled by ventilated disc brakes at all four corners. Exterior equipment includes front bumper tow hooks, fog lights, a receiver hitch, and Allison & Duramax badging.Ĭhrome finished 16″ eight-lug wheels are mounted with 265/75 Firestone Transforce all-terrain tires. This truck is finished in Dark Blue Metallic and features chrome bumpers and trim. This Silverado has 10k miles and is offered at no reserve with two keys, manufacturer’s literature, a clean Carfax report, and a clean South Dakota title. The truck was acquired by the selling dealer in December 2021 and received an oil change in preparation for sale. Modifications include Line-X bed liner, rear suspension airbags, and an under-dash mounted trailer brake controller, airbag gauge, and switch. Features include the LT2 trim package, power-adjustable front seats, dual-zone climate control, an AM/FM/CD stereo, Bose audio, and power windows, mirrors, and locks. This 2007 Chevrolet Silverado 2500HD crew cab is powered by a 6.6L LBZ Duramax turbodiesel V8 mated to an Allison six-speed automatic transmission and dual-range transfer case and is finished in blue over gray leather.
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