BD Diesel 2 Low UnLoc (1030710) for 2001-2014 Duramax LB7 / LLY / LBZ / LMM / LML

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The BD Diesel 2 Low UnLoc (1030710) is a performance upgrade for 2001–2014 GM Duramax trucks (LB7, LLY, LBZ, LMM, LML engines) that enables low-range gearing in two-wheel drive mode. Ideal for towing and trailer maneuvering, it reduces front-end wear and driveline bind by eliminating the need for four-wheel drive in low-range situations. Easy to install and durable, it improves control and flexibility for Duramax owners.

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Description

The BD Diesel 2 Low UnLoc (1030710) is a specialized performance upgrade designed for 2001–2014 GM Duramax diesel trucks equipped with LB7, LLY, LBZ, LMM, and LML engines. This innovative module allows drivers to engage low-range gearing in two-wheel drive mode, rather than being limited to four-wheel drive when using low range. This feature is especially useful for towing, maneuvering trailers, or navigating slippery conditions where full four-wheel drive isn’t necessary, helping to reduce driveline bind and front-end wear. Easy to install and built for durability, the BD Diesel 2 Low UnLoc enhances vehicle control and operational flexibility, making it a valuable addition for Duramax truck owners seeking improved drivability and utility.

Additional information
Weight 0.5 lbs
Dimensions 8.8 × 6.6 × 2.3 in
Fitment

Fitment

2001-2014 Duramax LB7 / LLY / LBZ / LMM / LML

Features

Features

  • Installation is simple, the kit plugs in under the hood
  • No wire cutting or splicing
  • Kit comes with an illuminated rocker switch for control and to indicate when the front axle is being overridden
  • Designed to allow the operator to manually disable the front wheel drive mechanism by holding the hubs in the free (2WD) mode with the transfer case in 4WD low range
  • By allowing the front wheels to be disengaged, maximum torque is available to the rear wheels
  • This will also allow for sharp “All The Way Over” turns without the front axle u-joint hopping or binding
  • With this kit installed, the front wheels will NOT be driven through the transfer case
  • Allows to have full power and torque while in a high gear reduction applied to the rear axle(s) only
Installation

Installation

INSTALL TIME

  • 1 Hour 30 Minutes

WARRANTY

Parts

  • 12-Months
  • 12,000 Miles
About brand
BD Diesel Performance is a diesel performance manufacturer focused on reliability and towing performance. The company designs parts that improve durability, power delivery, and vehicle control. BD Diesel products support daily driving, heavy towing, and work-ready diesel trucks. BD Diesel engineers turbochargers, exhaust brakes, transmission upgrades, and fuel system components. Their products help manage heat, control exhaust flow, and protect drivetrain parts. These upgrades improve drivability under load and during long pulls. Diesel owners trust BD Diesel for proven solutions. Whether upgrading a tow rig or improving reliability, BD Diesel delivers parts built for real-world use.
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