I’m Typically A Ford F-150 Guy, But I Picked Up This Well-Optioned 2025 GMC Sierra SLT Premium Plus For Less Than What F-150 XLTs Are Selling For

Why a die-hard Ford F-150 owner jumped ship for the Sierra SLT.

You don't have to be a Ford guy to appreciate how a deep discount on a 2025 GMC Sierra SLT Premium Plus convinced one driver to trade his blue oval loyalty for a bargain that even beat out a basic F-150.

A Value Proposition Too Good to Ignore

The ongoing truck wars often come down to brand loyalty, but as one owner recently demonstrated, smart shopping and simple math can easily sway a decision. 

I found a compelling story from Parker Smith, who shared his success in the 2019-2026 Chevy Silverado & GMC Sierra Owners Facebook page.

His move highlights a major market shift I've observed: when incentives are applied, the value proposition of a well-optioned GMC Sierra can undercut its Ford counterpart.

Parker's Story:

"I picked up this leftover 2025 GMC Sierra SLT Premium Plus on Saturday! I'm typically a Ford guy, but the rebates on this were too good to pass up. I was able to get this well-optioned 1500 for less than what F-150 XLTs are selling for, making it a no-brainer for me. The only other GM truck I have owned was a 2018 SLT, but I didn't end up caring for it too much. So far, I'm thinking that won't be the case with this one!"

"So far, I've added a BAK Revolver X4S tonneau cover, short antenna, Range DFM Disabler, MBRP muffler delete kit, and J&L oil catch can. Next up is tint, a leveling kit, and finding a used set of AT4 high clearance side steps. Looking forward to continuing to learn from everyone."

Why the 2025 Model is a Keeper (and the 2018 Wasn't)

Parker's previous dissatisfaction with a 2018 model and enthusiasm for the new 2025 highlight a crucial point: the 2019 refresh, which carried through to the 2025 model year, was a massive overhaul.

The current generation is light-years ahead, featuring a dramatically improved interior with the 13.4-inch infotainment screen and digital cluster, mechanical upgrades, and a superior 10-speed transmission. The answer to the query "Is the GMC Sierra 1500 a better truck than the previous generation?" is, unequivocally, yes.

Immediate Engine Security Mods: 

Parker immediately focused on the long-term reliability of the GM 5.3L V8 engine, tackling the two biggest preventative measures modern GM V8 owners take.

1. The Range DFM Disabler

• The 5.3L EcoTec3 V8 uses Dynamic Fuel Management (DFM), which allows the engine to run on anywhere from one to eight cylinders to save fuel. This constant cycling of the valve train has historically led to premature lifter failure—a major, expensive repair.
• The Range Disabler keeps the engine running in V8 mode all the time.
• This significantly mitigates the risk of catastrophic DFM-related lifter failure, provides a smoother throttle response, and maintains the proper V8 exhaust note. The minor 1-2 MPG fuel economy hit is a worthwhile trade-off for "lifter peace of mind."

2. The J&L Oil Catch Can

This modification works with the DFM disabler. The DFM system can lead to excessive oil consumption and oil vapor residue (PCV blow-by) being deposited onto the intake valves. The catch can trap this oil vapor before it can gum up your valves.

Tip: Ensure the J&L catch can is checked and emptied every 1,500 to 2,500 miles, especially during the break-in period.

What's Next For Parker?

Parker's other initial mods—a BAK Revolver X4S tonneau cover, a short antenna, and an MBRP muffler delete—are all solid, common choices that clean up the truck's profile and give it a better sound.

His planned next steps—tint, a leveling kit, and finding used AT4 high-clearance side steps—will truly personalize the truck's stance.

On the Leveling Kit: Invest in Ride Quality

To achieve a visual level (removing the factory rake) without sacrificing the SLT's excellent ride, a coilover or adjustable shock-based solution is strongly recommended over simple spacer kits.

Recommendation: Kits like the Bilstein 6112 (Front) / 5160 (Rear) are the sweet spot for performance, improving damping and handling significantly.

Tip: If you lift the front more than 2 inches, you must upgrade to high-angle Upper Control Arms (UCAs) to preserve suspension travel and prevent premature wear.

Parker’s GMC Sierra with 2” level with 305/55/20 Toyo RT Trails

On the AT4 High-Clearance Steps

Parker's plan to find used AT4 high-clearance side steps is smart. They are generally a direct bolt-on, giving the truck a sleeker, less bulky, and more rugged profile, which perfectly complements the leveling kit and taller stance.

In my recent piece, Chevy Silverado Owner Says, "I See All the Negatives About the GM 6.2L V8, Well, I've Had No Problems With My Silverado, 43K In, It Passed the Recall Test With No Issues. You made the right call.

Here are two other Ford F-150 owners who weren't happy and ended up buying a GM truck. See if they made the right choice. 

"I Traded My Ford F-150 For This 2025 Chevy Silverado Z71 Trail Boss. I've Heard Lots of Negative About New Chevys, But I Got a Great Deal, I Hope I'm Not Sorry"

"I Just Traded My 2020 Ford F-150 for a 2025 Chevy Silverado LT Trail Boss, But Now, I Hope I Made the Right Choice"

What the Community is Saying

On the DFM Disabler: "I have been running an OBD2 dongle disabler for over a year. Zero issues, and the truck drives like it should have from the factory—smooth power, no hesitation. The mileage difference is worth the peace of mind knowing those lifters are safe."

On Leveling: "Skip the cheap puck spacers. If you plan to keep the truck, invest in coilovers. I put Bilsteins on my SLT and the highway ride is noticeably better, even with 33-inch mud tires."

On the 2025 Refinement: "I traded in my 2018 SLT for a 2025 SLT Premium a few months ago. The difference is night and day. The interior fit and finish, the 10-speed transmission, and the integrated Google technology make it feel like a completely different class of vehicle. Parker got a great truck."

Conclusion: A Smart Conversion

Parker made a wise move jumping ship from the F-150 when the value was right, and even smarter moves by instantly addressing the long-term reliability concerns of the 5.3L V8. He’s set up for success with the current, fully refined generation of the Sierra.

Key Takeaways for GMC Owners:

• Engine Security: Keep the DFM Disabler plugged in and maintain a strict schedule for emptying the catch can.
• Suspension Investment: Invest in high-quality adjustable shocks instead of cheap spacers to maintain comfort.
• OEM Steps: The AT4 steps bolt right up and give the truck the clean profile a leveled stance demands.

The Question for Our Readers:

If you had to choose one more modification to instantly improve the performance or comfort of Parker's 2025 GMC Sierra SLT, what specific product would you recommend and why? Click the red Add New Comment link below and let us know.

I'm Denis Flierl, a Senior Torque News Reporter since 2012, bringing over 30 years of automotive expertise to every story. My career began with a consulting role for every major car brand, followed by years as a freelance journalist test-driving new vehicles—equipping me with a wealth of insider knowledge. I specialize in delivering the latest auto news, sharing compelling owner stories, and providing expert, up-to-date analysis to keep you fully informed.

Follow me on X @DenisFlierl, @WorldsCoolestRides, Facebook, and Instagram

Photo credit: Denis Flierl via Parker Smith