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2025 GMC Sierra 1500 Gets New Sport Exhaust Tuning Calibration

The 2025 GMC Sierra 1500 is offering a new exhaust system enhancement introduced for the 2025 interim model year, also known as the 2025.5 model year. Customers can now opt for the Sport exhaust system calibration, which provides a more aggressive exhaust note and delivers a sportier aural experience while driving. The new Sport exhaust calibration is tagged with RPO code RWQ, and is identical to the RWQ exhaust calibration on offer for the 2025 Chevy Silverado 1500.

Badging on the GMC Sierra 1500.

The new Sport calibration is only available in conjunction with the naturally aspirated 6.2L V8 L87 gasoline engine and must be paired with the optional Active Dual Exhaust system (RPO code NPP), the latter of which is priced at $395. To note, the latest Active Exhaust system for the 6.2L V8 L87 was added to the Sierra 1500 lineup for the 2024 model year.

The RWQ calibration itself is also priced at $395, and is only available on select trim levels of the 2025 GMC Sierra 1500, including:

  • SLT
  • AT4
  • Denali
  • Denali Ultimate

Notably, the off-road-oriented AT4X trim does not offer the new Sport exhaust calibration.

In total, the 2025 GMC Sierra 1500 lineup offers four engine options, including the turbocharged 2.7L I4 L3B gasoline engine, rated at 310 horsepower and 430 pound-feet of torque; the naturally aspirated 5.3L V8 L84 gasoline engine, rated at 355 horsepower and 383 pound-feet of torque; the naturally aspirated 6.2L V8 L87 gasoline engine, rated at 420 horsepower and 460 pound-feet of torque; and the 3.0L I6 LZ0 turbodiesel Duramax engine, rated at 305 horsepower and 495 pound-feet of torque.

All 2025 GMC Sierra 1500 models ride on the GM T1 platform. Vehicle production takes place at two facilities, namely the GM Fort Wayne Assembly plant in Indiana, and the GM Silao Assembly plant in Guanajuato, Mexico.

Recently, GM CEO Mary Barra announced plans to increase annual production at the Fort Wayne Assembly plant by 50,000 units in response to new tariffs imposed by the Trump administration on vehicles assembled outside the country.

Jonathan is an automotive journalist based out of Southern California. He loves anything and everything on four wheels.

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Comments

  1. Ya…that’s what GM needs to be working on😵‍💫. Cel’s, bad engines, bad sensors, bad everything…but let’s tune up our sport calibration.

    Reply
    1. Its the technology thats ruining everything….
      Its sad how companies have stooped so low,…I mean, EVERYONE.

      Reply
      1. Also, sorry, the QC problems that caused exploding engines….
        Terrible.

        Reply
  2. As to why the AT4X/ZR2 don’t offer this sport calibration, my understanding is that they already come with it standard. They’re just offering it as an option on the other trims, and also selling it as an accessory for any NPP-equipped truck to have the software calibration installed by dealers.

    Reply
  3. How is this done, exactly? Are there moveable baffles in the system? Is it some sort of by-pass?

    Reply
    1. No. It’s all computer generated. It’s virtual. Your analysis is straight up correct.

      Reply
  4. I wait until the exhaust system falls off my rides. Then I go to my neighbors muffler shop. I can get a performance system custom made for a fraction of what GM is asking. Once I got a used flow master cheap just because it was used.

    Reply
  5. So the sound of the 6.2 failing is more aggressive, too?!?

    Reply
  6. Buy a good muffler for a $100 or so and have the stock restrictive crap replaced.

    Reply
  7. When the Missues and I go motoring in our ‘09 Rondo to the Dollar General to pick up paper plates and my pop tarts I can roll down the winda and make Zoom Zoom sounds. Or rooooooooaaaar.

    Reply
  8. can it be used on a 04 Sierra sle 4×4 4.8 motor ? i put duel exhaust an a flow master 40 on still not loud i don’t expect it to be like a 6.2

    Reply
    1. Remove the catalytic converter. Straight pipe just like I did with my T-1000. After that it ran the quarter mile in 9 seconds.

      Reply
  9. GM needs to be more concerned about their 6.2 liter problems and the 10 speed transmission problems before they design this kinda crap

    Reply
    1. Right on. My ‘97 Grand Am looked sharp too and had lots of “features.” I encountered a slightly flooded viaduct on my way to work and followed the Corollas, Civics and Hyundai’s. They made it. My GM Pontiac stalled. My mechanic told me that GM put the ignition module at the bottom of the block on their 2.2 liter. Hasn’t changed.

      Reply

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