GM Parts & Accessories Guides

Are wheel spacers safe on a Silverado? What hub-centric really means, when you need extended lugs, and the four numbers to check before you order.

GM uses 6x139.7 on half-ton trucks, 6x120 on some crossovers, 8x180 on HD trucks and 5x120 or 5x105 on cars. Full pattern, bore and offset chart by model.

Bed length decides which bed rails, tie-downs and cargo systems fit your Silverado, Sierra or Colorado. Measured lengths, fitment table and how to check.

Factory tire sizes and diameters for every Silverado 1500 generation, what actually rubs, how wheel offset changes fitment, and when a leveling kit is needed.

GM uses both 315 MHz and 433 MHz TPMS sensors. Match frequency first, then compare OEM part numbers against programmable aftermarket sensors and relearn needs.

Drop-in, spray-in or bed mat for a Silverado or Sierra? Compare dent protection, rust risk, cargo grip, reversibility and bed-length fitment before you buy.

Silverado EV and Sierra EV use a 5'11" bed and a folding midgate. Here is which bed covers, liners, racks and toolboxes actually fit, and which do not.

2015-2020 Escalade brakes use a 330mm front rotor; 2021+ models use a different part entirely. Full fitment chart, OEM part numbers and the RPO J55 check.

Buick brake fitment by model and generation: Enclave 321mm front, Encore GX 300mm, Envision by year, plus RPO brake codes, pad choice and DOT 3 fluid.

Running boards, nerf bars or power steps for a Tahoe, Suburban or Yukon? Compare step width, load ratings, winter behavior and exact fitment by year.

Which Chevrolet, GMC and Buick parts interchange with Pontiac, Saturn and Hummer H2/H3 models, by platform, plus how to verify fitment before you order.

Wheel flares, lift height and tire size decide which GM truck splash guards fit. Here is how to check yours before you order front or rear mud flaps.

OEM, remanufactured or passive conversion for a failed GM Magnetic Ride Control shock: what each option keeps, what it gives up, and how to diagnose first.

How to upfit a Chevy Express or GMC Savana: flooring first, then partition, shelving, ladder rack and electrical, with payload math and RPO codes to check.

GM bulb size chart for Chevy, GMC, Buick and Cadillac: verified headlight, fog and tail bulb numbers by model, plus how to confirm yours in 90 seconds.

GM LED headlight conversions explained: why CANbus lamp-out warnings and DRL flicker happen, what decoders fix, and how beam pattern decides the result.

Which floor liners, cargo trays and charging accessories actually fit a Cadillac Lyriq or Optiq, plus cargo specs, charger sizing and adapter fitment.

Silverado and Sierra 1500 front rotors are 330 mm on 2014-2018 trucks and 343 mm on 2019-2026; rears stay 345 mm. Full year-by-year fitment chart inside.

Ceramic or semi-metallic brake pads for your GM truck or SUV? Compare friction codes, towing heat, dust and rotor wear before you order pads.

The most important thing to establish before buying anything for an Encore: the Encore and the Encore GX are different vehicles. They share a name and very little else. Getting...

Buying accessories for an Envision comes down to one question first: which generation do you have? The 2014–2020 and 2021–2026 cars are different bodies, and fitted parts do not cross...

The Enclave is a three-row family SUV, and two things decide almost every accessory purchase for one: your generation, and whether your second row is buckets or a bench. Get...

The Envista arrived for 2024, and its aftermarket is still young. That is the single most useful thing to know before you start shopping: a lot of what you will...

Buick's accessory market is narrower than Chevrolet's, which is a function of lineup size rather than support quality. What exists clusters in three areas — lighting, interior protection, and OEM-replacement...

2023 was more of a foundation-setting year, with steady demand for protection accessories and the earliest wave of interest in accessories for GM's then-newer EV models. Jump to a section:...

Looking back, 2024 was defined by the continued rollout of GM's newer EV models, which drove real growth in EV-specific interior protection and charging accessories. Jump to a section: EV-specific...

As Chevy's smallest and most affordable model, the Spark has a more limited dedicated aftermarket than larger vehicles, but a few interior-relevant parts and general-purpose accessories are worth knowing about....

Trim level doesn't determine Silverado interior fitment — configuration does. On 2019+ trucks, flooring material, first row seat type, second row under-seat storage and OTH coverage split floor liners into...

The Blazer EV shares much of its accessory ecosystem with its Equinox EV sibling, given their common GM BEV3 platform, starting with custom floor liners built specifically for the model....

The Equinox EV has solid interior protection options already available, which pair well with a few general EV-focused accessories for charging and road trips. Jump to a section: Custom floor...

Camaro parts don't form a smooth budget ladder — liners at $109, throttle body spacers at $158, then a jump straight to $890+ fuel systems with nothing in between. Includes...

The Traverse is a three-row family SUV, and two things decide what fits: your generation, and your second-row seating. Trim matters far less than owners expect — including on the...

Five Silverado 1500 generations plus the Silverado EV, and the fitment breaks that actually cost people money — the crew cab short bed grew from 5'7" to 5'8" in 2019,...

Silverado maintenance parts organised by ownership stage — with the specification correction that matters most: dexos1 Gen 3 superseded Gen 2, and the current 5.3L and 6.2L V8s take 0W-20...

Most bad accessory purchases come down to one of three mistakes: buying a part when you needed maintenance, buying aftermarket where OEM matters, or buying on the model name without...

Z71 is an RPO code for an off-road package, not a trim level — so searching "Z71" for accessories discards most of what actually fits your truck. Suspension is the...

Most parts sold under the ZR2 name fit a Colorado, not a Silverado — two different trucks sharing a package name. The Silverado 2500HD ZR2 air spring kit requires an...

The Tavera was sold primarily in India and other international markets rather than through US Chevrolet dealers, which means dedicated Tavera-specific accessories are essentially absent from typical US-based aftermarket retailers....

The redesigned Trax has custom floor liners available, while owners of earlier 1.4L turbo model years should also keep an eye on a couple of known reliability parts worth having...

Not every accessory takes the same effort to install, and knowing what you're getting into before ordering helps you plan a weekend project versus something better left to a shop....

On a Tahoe the fitment question isn't cab style — it's second row bench or buckets, third row presence, and where the cargo liner stops. Plus the hybrid exclusion buried...

Getting a tonneau cover installation right starts before the cover even arrives, with accurate bed measurements and a clear sense of whether your specific cover is a no-drill or bolt-on...

There isn't a dedicated pet-branded accessory lineup for Chevy vehicles right now, but several general-purpose protection accessories do double duty extremely well for owners who regularly travel with dogs or...

Audio upgrades range from a simple head unit swap to a full subwoofer and amplifier setup, and the right starting point depends on whether you're chasing better sound quality or...

This page covers what is worth adding to a Chevrolet, inside and out. One thing to be upfront about: almost everything genuinely useful here is fitment-dependent, and a lineup-wide guide...

The 6.6L L5P in the HD trucks and the 3.0L in the 1500 are both called Duramax and share nothing that matters for servicing — the widely sold dexosD bundle...

The 2500HD isn't a bigger 1500 — it changes body about a year later at every transition, so matching parts by model year across tonnage fails. Includes the three-step air...

Chevy's HD lineup shares many core dimensions and cab configurations between the 2500 and 3500, which means a lot of accessories are cross-compatible across both trucks rather than being tonnage-specific....