2020-2025
2015-2019
2007-2014
Installation Time
(approx) 20 Minutes
Difficulty Level:
Simple installation for anyone.
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Bully Dog GT Platinum Diesel Tuner (11-15 6.6L Duramax Sierra 2500 HD)Find parts that fit my vehicle
Item HG20194
Sierra 2500 Sales Techs:
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M-F 8:30A-11P, Sat-Sun 8:30A-9P
$422.10
4 Reviews
On Sale
-10% $422.10 each Was $469.00
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features
- Improves Horsepower, Torque and Overall Performance
- Pre-Loaded with Pre-Configured Bully Dog Tunes
- Hand-Held Tuner, Gauge, Monitor, Diagnostic
- Large Full Color Screen
- Simple Controls
- Customizable Screen Color Scheme
- Adjustable Dash/Windshield Mount
- Monitors up to 4 Gauge Functions Simultaneously
- Numerous User Adjustable Parameters
- Updates via Internet
- Does Not Support Custom Tuning
- Fits 2011-2015 6.6L GMC Sierra 2500 HD Models
Description
Power in Your Palm. Accessing all that valuable data, performance gains and hidden power in your 6.6L Sierra 2500 doesn't take a team of mechanics - at least not with the Bully Dog GT Tuner. This tuner includes multiple functions that puts the speed shop in your palm: Monitors, gauges, diagnostic tools and tuning. From adjusting the speedometer to match large aftermarket tires, to changing transmission shift points and/or shift firmness, to monitoring 4 gauge functions simultaneously, the GT lets you manage it all. Its tuning capabilities affords you the opportunity to really unleash the power of your 6.6L.
Performance Gains. Further enhance the performance of your 2011-2015 GMC Sierra 2500 HD with the GT Tuner that includes pre-configured tune files from Bully Dog. When your Sierra rolled off the assembly line, GMC programmed it to cater to the needs of the daily driver, not the performance enthusiast who adds aftermarket bolt-on modifications in the search of more power. So, if your Sierra is bone stock or if you have added a cold air intake, throttle body or exhaust mods, you should upgrade to a pre-configured Bully Dog tune to see the full power potential your Sierra can make.
Built for Handiness. The Bully Dog GT Tuner is designed all round for convenient, intuitive use and multi-layered usefulness. Beyond the preloaded tunes, the tuner also includes numerous other functions and adjustments. It can read and clear DTC codes. The physical construction of the tuner makes it easy to use also, with straightforward controls, a large full-color screen with easy to read text, numbers, and gauges, and an included pivoting mount arm that lets you set up the tuner exactly where you want it on dash or windshield.
Rapid Setup. This tuner is engineered and programmed to match up easily to the intended model years and engine type it's designed for, making installation a snap. Updates download directly onto the tuner from the Internet, and it is upgradable with new functions and programs the same way. A trickle charger should be used during installation.
Application. The Bully Dog GT Platinum Diesel Tuner is designed for use on 2011-2015 GMC Sierra 2500 HD models equipped with a 6.6L engine. Please note this device does not support custom tuning.
Performance Gains. Further enhance the performance of your 2011-2015 GMC Sierra 2500 HD with the GT Tuner that includes pre-configured tune files from Bully Dog. When your Sierra rolled off the assembly line, GMC programmed it to cater to the needs of the daily driver, not the performance enthusiast who adds aftermarket bolt-on modifications in the search of more power. So, if your Sierra is bone stock or if you have added a cold air intake, throttle body or exhaust mods, you should upgrade to a pre-configured Bully Dog tune to see the full power potential your Sierra can make.
Built for Handiness. The Bully Dog GT Tuner is designed all round for convenient, intuitive use and multi-layered usefulness. Beyond the preloaded tunes, the tuner also includes numerous other functions and adjustments. It can read and clear DTC codes. The physical construction of the tuner makes it easy to use also, with straightforward controls, a large full-color screen with easy to read text, numbers, and gauges, and an included pivoting mount arm that lets you set up the tuner exactly where you want it on dash or windshield.
Rapid Setup. This tuner is engineered and programmed to match up easily to the intended model years and engine type it's designed for, making installation a snap. Updates download directly onto the tuner from the Internet, and it is upgradable with new functions and programs the same way. A trickle charger should be used during installation.
Application. The Bully Dog GT Platinum Diesel Tuner is designed for use on 2011-2015 GMC Sierra 2500 HD models equipped with a 6.6L engine. Please note this device does not support custom tuning.
Fitment:
- 2011 GMC Sierra 2500
- 2012 GMC Sierra 2500
- 2013 GMC Sierra 2500
- 2014 GMC Sierra 2500
- 2015 GMC Sierra 2500
Bully Dog 40420
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Bully Dog Tuner
- (1) OBDII Adapter Plug
- (1) HDMI Cable
- (1) Power Wire
- (1) Mini USB Cable
- (1) Fuse Tap
- (1) Fuse Spade
- (1) Micro SD Card
- (1) Micro SD Card Reader
- (1) Windshield Tuner Mount
3.5
Customer Reviews (4)
Reviews of Bully Dog Tuner products have an average rating of 4.5 out of 5
Questions & Answers
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Will It Fit My Sierra 2500
- 6.6L V8 Duramax - 11, 12, 13, 14, 15
