Chevrolet Silverado 1500 / GMC Sierra 1500 Hub

One hub, two badges: the Chevrolet Silverado 1500 and GMC Sierra 1500 are the same platform in different trim, and the aftermarket treats them that way — most kits are sold as a single GM 1500 application. GM’s combined volume rivals Ford’s, so kit coverage is deep. What this platform demands from a buyer is not more choice; it is more care with exclusions, because GM sells factory-lifted and adaptively-damped versions of these trucks that standard kits do not fit.

We have not hands-on tested kits for this platform. Everything published here is tied to a cited source — manufacturer fitment pages and retailer listings, checked 2026-11-03 — and our method is explained in how we test and verify.

Check first: the exclusions that run this platform

Trail Boss (Chevrolet) and AT4 / AT4X (GMC) are factory-lifted. ReadyLIFT states these trims are factory equipped with a 2-inch front lift, including a longer front strut assembly — which is why its standard GM 1500 leveling kits say, in plain terms: not compatible with Chevy Trail Boss and GMC AT4 / AT4X suspension. Stacking a standard spacer on a factory lift creates exactly the control-arm and CV problems the exclusion exists to prevent. Trail Boss and AT4 owners need trim-specific kits (ReadyLIFT makes one, with replacement upper control arms), and the ZR2 / AT4X sit further out still — the standard-kit listings we checked exclude them too.

Adaptive dampers split the catalogue in two. Trucks with Adaptive Ride Control (ARC — found on Denali and High Country trims) need the variant of a kit built for them. ReadyLIFT’s mainstream 1.5-inch leveling kit for these trucks, the 66-39150 below, is explicitly the non-ARC version; the ARC version is a different SKU (66-39151) with sensor brackets. Superlift’s listings for this platform likewise state their kits do not fit MagneRide-equipped trucks. If your truck has adaptive dampers, the SKU question comes before every other question.

2019 is two trucks. The T1XX generation launched for 2019, but GM also sold the outgoing truck as the 2019 Limited / LD in the old body style. Kit listings are blunt about it: new body style only; not compatible with 2019 Limited old body style. A 2019 owner has to know which truck they own before anything else on this page applies.

2014–2018: the K2XX generation

The K2XX trucks (2014–2018) are the previous full redesign — the generation that brought the EcoTec3 direct-injected engine family — and they are now the used-market volume play, with a long-established kit catalogue behind them. No factory-lift trim complicates this generation the way Trail Boss complicates the newer trucks, which makes leveling straightforward in principle: spacer and strut-based levels in the usual 1.5–2.5-inch band, full lifts above that.

Honesty about our own coverage: our verified dataset does not yet hold a K2XX-scoped kit or fitment row we are willing to publish. Rather than borrow numbers from the newer generation — the single most common fitment error on the internet — this section stays educational until a K2XX-specific source is verified. If you are lifting a 2014–2018 truck today, the workflow at the bottom of this page is the same; the table below simply does not speak for your generation yet.

2019+: the T1XX generation

The current generation (T1XX, 2019–present) is a full redesign and the generation our verified data starts with. The headline verified combination: ReadyLIFT’s 1.5-inch upper strut spacer leveling kit (66-39150, listed at $149.95 on ReadyLIFT’s Chevrolet leveling page) fits 2019-and-newer new-body Silverado and Sierra 1500s in 2WD and 4WD, and ReadyLIFT states it allows up to a 33×11.50R20 tire on a 20×9 wheel with 0 offset — with the honest asterisks that minor trimming to the felt liner may be required, and that some wheels need a 6mm or greater spacer to clear the brake caliper. That is the row in the table below, with its source attached. It is a spacer level, not a suspension lift; expect the factory ride and the limits that come with 1.5 inches, and read leveling kit vs lift kit vs body lift if you are deciding between the two.

The T1XX kit catalogue is now compared in full in best leveling kits for Silverado 1500 / Sierra 1500 — organised by trim family, because on this platform the trim picks the kit: standard trucks, Trail Boss / AT4, and ZR2 / AT4X each get a different verified answer. And the platform’s 35-inch question has a manufacturer-stated answer at last, with two routes and their conditions separated: how much lift to fit 35s on a Silverado 1500.

Your workflow on this platform

1. Name your exact truck: year, new vs old body style if it is a 2019, trim, and whether it has adaptive dampers.
2. Run the exclusion check above before reading a single kit review.
3. Convert your tire goal with the tire size calculator, then price the whole job — kit, labour, alignment, tires — with how much does it cost to lift a truck.
4. Treat any fitment claim that does not name its wheel width and offset as half a claim. Our tire size and lift height guide explains why.

Sources for this hub (checked 2026-11-03): ReadyLIFT’s Chevrolet leveling kits page (66-39150 application and price); TruckSpring’s ReadyLIFT 66-39150 application guide and Switch Suspension’s 66-39150 listing (tire clearance, trimming and exclusion notes); ReadyLIFT’s AT4/Trail Boss kit documentation (factory 2-inch lift statement); Diesel Power Products’ Superlift GM 1500 listings (MagneRide and Trail Boss/AT4 exclusions); McFarland Chevrolet’s used Silverado buying guide (K2XX 2014–2018 / T1XX 2019–present generation ranges).