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AFE AGD Advanced Gauge Display Monitor (08-23 6.6L Duramax Sierra 2500 HD)

Item HG3324
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$529.20 (kit)

FREE Shipping Market Price $608.99 You Save 13% ($79.79)

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      Product Information

      Features, Description, Q&A, Specs & Installation


      • Advanced Gauge Display Monitor
      • Monitors Over (25) Engine Parameters
      • Displays up to (8) Gauges at a Time
      • High Definition 5.50-Inch Touch Screen Display
      • Fully Customizable Interface
      • Read and Clear Diagnostic Trouble Codes (DTCs)
      • Speedometer Calibration for Tire Size
      • Data Logging Capability
      • Works with Most AFE and Aftermarket Tuners
      • Updateable via Computer
      • Fits All 2008-2023 6.6L GMC Duramax Sierra 2500 HD Models


      Advanced Engine Monitoring. The AFE AGD Advanced Gauge Display Monitor is the innovative engine monitoring system designed to give you complete access to your Duramax-powered Sierra 2500 HD’s capabilities. This gauge display monitor is designed to interface with your truck’s computer via its OBDII, letting you monitor over 25 OBDII parameter ids (PIDs). This allows you to get the full performance picture of your truck. What’s more, this device lets you monitor up to eight PIDs at a time.

      Versatile Customizable Touch Screen Display. One area where this AGD gauge display monitor really shines is its display. Specifically, this device is equipped with a 5.50-inch capacitive touch screen display with high-definition graphics, making monitoring your truck extremely intuitive. In fact, this device lets display five to eight gauges at a time while allowing you to change the specific PID per gauge. This makes this system quite versatile. What’s more, the user interface is completely customizable in a number of on-board styles to suit your needs.

      Read and Clear Check Engine Lights. This gauge display monitor doesn’t only let you monitor your truck’s PIDs it also lets you read and clear diagnostic trouble codes. This lets you deactivate any annoying check engine lights you have in your truck. Just be aware that a persistent check engine light could be an indicator of a more serious issue. If you do experience a persistent check engine light it’s advisable that you have this checked by your mechanic ASAP.

      Maximize Your Tire Size. This gauge display monitor also lets you calibrate your speedometer when upgrading to larger tires. This feature means you can upgrade to a different wheel/tire combo without worrying about visiting your local tuner.

      Data Logging Capability. Another practical feature of this AGD gauge display monitor is its full data logging and monitoring capability. This feature allows you to monitor and record any performance parameter on your truck. This data set can then be exported onto your computer or laptop via the device’s integrated USB port.

      Adjustable Parameters Include:

      • Read and Clear DTCs
      • Speedometer Calibration for Tire Size
      • Data Logging Capability

      Updateable via Computer. This AGD gauge display monitor can be easily updated via your computer or laptop using the included USB cables. This way, you can keep the device up to date with the latest firmware.

      Application. The AFE AGD Advanced Gauge Display Monitor fits all 2008-2023 6.6L GMC Duramax Sierra 2500 HD models.


      • 2008 GMC Sierra 2500
      • 2009 GMC Sierra 2500
      • 2010 GMC Sierra 2500
      • 2011 GMC Sierra 2500
      • 2012 GMC Sierra 2500
      • 2013 GMC Sierra 2500
      • 2014 GMC Sierra 2500
      • 2015 GMC Sierra 2500
      • 2016 GMC Sierra 2500
      • 2017 GMC Sierra 2500
      • 2018 GMC Sierra 2500
      • 2019 GMC Sierra 2500
      • 2020 GMC Sierra 2500
      • 2021 GMC Sierra 2500
      • 2022 GMC Sierra 2500
      • 2023 GMC Sierra 2500

      AFE 77-91001

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Display Monitor
      • (1) OBD Plug
      • (1) Magnetic Base
      • (1) Windshield Mount
      • (1) Long USB Cable
      • (1) Short USB Cable

      Questions & Answers

      10 More Questions

      Will It Fit My Sierra 2500

      • 6.6L V8 Duramax - 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23