Give your vehicle a more aggressive sound with a GMC Accessories Active Exhaust Calibration. When in Sport mode, this calibration changes when and how much the active exhaust valves open making for a louder exhaust note at startup, while cruising and under wide-open throttle. Compatible with 2025+ models with a 6.2L V8 engine (also known as L87). Installation by an authorized GMC Dealer is required.
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The greater of either the balance of the vehicle's bumper to bumper warranty or 12 months / 12,000 miles
No, there is no hardware included for this calibration. The calibration must be performed at an authorized dealer.
This calibration is for 2025+ models with a 6.2L V8 engine.
Installation by an authorized dealer is required.
No, this calibration will not affect the vehicle's emissions.
No. There is no change in HP or torque with this calibration.
Yes, measurements were taken in a chassis dyno and this calibration provides an increase in decibels for the exhaust sound at start up and while cruising.
GM Part #85822149
GM Part #85822149