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Matching the factory black on your GM truck or SUV is a lottery — until you know the two-letter code that ends the guessing. This guide breaks down the best WA8555 spray paint and pen options so you can fix rock chips and door dings without a trip to the body shop.
I’m Mo Maruf — the founder and writer behind GoCarLife. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
The WA8555 code covers Onyx Black across Chevrolet, GMC, Buick, and Cadillac, and this roundup separates the true color match options from the near-misses. The best WA8555 spray paint for your repair depends on the size of the damage, your setup, and whether you crave a factory-grade finish.
Our Picks at a Glance
How To Choose The Best WA8555 Spray Paint
WA8555 is the GM color code for Onyx Black, a paint used across Chevy, GMC, Buick, and Cadillac models. Before you buy anything, confirm the code on your vehicle’s door jamb sticker — the wrong code means a visible mismatch, no matter how well you apply it.
Pen, Brush, or Aerosol?
The format should match the damage. A 2-in-1 pen with a fine tip and brush handles chips and light scratches on door edges. A brush bottle gives you more paint for slightly larger areas. An aerosol spray can covers the biggest jobs, like a whole panel, but demands more prep and masking.
Prep is Half the Repair
Clean the area, remove grease, and shake the bottle for the time the maker specifies — most ask for 30 seconds to a minute. Test on scrap paper first to confirm the shade. For deeper scratches, thin coats with drying time between layers beat one thick blob.
Clear Coat for the Finish
Onyx Black is a metallic, so it needs a clear coat on top to lock in the gloss and protect the repair. Some pens bundle the clear coat in the base of the bottle; others expect you to buy it separately. Factor that into your final choice.
Quick Comparison
| Model | Best For | Format | Volume | Coverage | Amazon |
|---|---|---|---|---|---|
| Artbreath Touch Up Paint★ Best Overall | GMC Truck Owners | 2-in-1 Pen | 0.4 fl oz | 0.08 m² | Amazon |
| U-POL Expert ColorPro Spray Pick | DIY Panel Spraying | Aerosol Can | 219 ml | 2.19–2.43 m² | Amazon |
| GM ACDelco 2-In-1OEM Authentic | Genuine OEM Kit | Bottle + Clear Coat | 14.79 ml | — | Amazon |
| Marksfit Touch Up Pen | Chevy Color Match | 2-in-1 Pen | 0.4 fl oz | 0.08 m² | Amazon |
| Cardiality Touch Up Pen | Value for Small Repairs | 2-in-1 Pen | 15 ml | 0.08 m² | Amazon |
| RSACET Touch Up Paint | GM Family Coverage | Pen | 0.41 fl oz | — | Amazon |
| Carsupro Touch Up Pen | High-Volume Chip Fixes | 2-in-1 Pen | 15 ml | 0.08 m² | Amazon |
| Dupli-Color Scratch Fix | Everyday Touch-Ups | Pen | 0.25 fl oz | — | Amazon |
| SEM Factory Pack | Pro-Grade Panel Work | Aerosol Can | 12 oz | — | Amazon |
In-Depth Reviews
1. Artbreath Onyx Black GBA/WA8555 Touch Up Paint
Our pick — 4.5★ from 150+ verified ratings; the strongest balance of quality and price.
The GMC owner’s favorite that makes a used truck’s rock dings disappear in minutes.
This 0.4 Fl Oz pen is built for the GMC family — Sierra 1500/2500 HD, Acadia, Canyon, Savana, and Terrain — and the gloss finish dries in just 10 minutes. Buyers report it hides minor scratches and rock dings so completely that the repair is invisible. The 2-in-1 design gives you a pen pin for fine scratches and a brush for larger chips, so one tool covers both damage types.
What wins people over is the color accuracy: 21 owners single out the matching as the standout trait, and the quality gets its own praise. It covers 0.08 square meters, which is plenty for a few door-edge chips or a spot on a bumper. The chip-resistant, fast-drying formula holds up to daily driving.
The honest trade-off is that scratch compatibility gets mixed feedback in the review pool. A few owners found the repair showed up worse than the original scratch — usually on deeper damage where a pen can’t fill the void. For shallow rock chips and light scuffs, this is the closest thing to invisible you’ll get at home.
Why it wins
- Spot-on color match for GMC Onyx Black — the #1 thing buyers praise
- 2-in-1 pen and brush handles chips and larger dings
- Dries in 10 minutes with anti-rust, waterproof protection
The trade-off
- Deep scratches may still show — a pen can’t fill a void
- Only 0.4 Fl Oz, so it’s for touch-ups, not panel repairs
Grab it for: GMC owners with light chips and scuffs who want a fast, accurate fix without a dealer trip.
Think twice if: your damage is a deep gouge — you’ll need a filler or a full spray job instead.
2. U-POL Expert Color Spray Paint
The rattle can that gives a spray-gun finish, built with Axalta color tech.
This is the first true aerosol on the list, and it’s the one for bigger jobs. The 219 ml can covers 2.19 to 2.43 square meters, which is enough for a full panel or a large section of a door. It uses next-generation Axalta color technology to lock onto the OEM factory-applied paint color, and the gloss finish is designed to match the GM 8555 code.
The fan spray nozzle lets you adjust the spray pattern for an expert finish, and the maker’s 3-step routine — prime, paint, protect — pairs it with a filler primer and protective clearcoat. Owners who tried it on their trucks report the car lot itself couldn’t tell the difference after the repair. Handling black paint is notoriously hard, and this one nails the match.
The coverage is on the thin side for a pro-grade can; one owner found it average for large expanses but fine for small color-match areas. Light to medium coats will give you a decent result, but you’ll want to budget time for layering.
Only for spray jobs: this is a big can for big damage — the 219 ml format has no pen tip, so it won’t help with a single door-edge chip.
Best if: you’re spraying a panel or bumper and want a pro-grade finish from a rattle can.
Look elsewhere if: you only have a pebble chip — a 2-in-1 pen is faster and less wasteful.
3. Genuine GM ACDelco 2-In-1 Touch Up Paint
The dealer-shelf bottle that bundles color and clear coat for a true factory finish.
This is the genuine GM ACDelco kit, the exact thing the dealer would sell you. It’s a 2-in-1 design with the gloss black color in the bottle and a clear top coat in the base, so you don’t need to buy a separate clear coat. The abrasive tip on the cap removes peeling paint still attached, prepping the surface before you apply.
It’s a favorite for wheel repairs — owners used it on black chrome wheels and gloss black rims with results invisible from a foot away. The pen tip gives you precision for small marks, while the brush handles larger scuffs, and the foam-tipped applicator in the base spreads the clear coat smoothly.
The flow control on the pen tip is fiddly — it can dump paint if you press too hard, so light dabs work better than drags. At 14.79 ml it’s a small bottle, but for a curbed wheel or a handful of chips, it’s enough, and the built-in clear coat seals the repair properly.
Genuine coverage: this is the OEM part, so the color code is exact — 41/41U GBA WA8555 — and it includes the clear coat the aftermarket pens lack.
Reach for it if: you want the dealer-grade kit with clear coat included, especially for wheel or rim repairs.
skip it if: you need to cover a large panel — the 14.79 ml bottle is strictly touch-up territory.
4. Dupli-Color Scratch Fix All-In-1 Touch-Up Paint
The most-reviewed touch-up pen on the shelf, tested by tens of thousands of drivers.
Dupli-Color claims to be the only brand offering colors tested and approved by vehicle manufacturers, and the sheer volume of owner experience backs that up. This EAGM05920 pen matches the Black 41, WA 8555, GBA code and comes in a 0.25-fluid-ounce pen with two applicators — a fine tip for scratches and a brush for chips.
The one-coat prime-and-paint formula speeds repairs, and the patented ergonomic design reduces hand fatigue. Inside, a heavy coil spring agitator provides 360-degree mixing so the color stays even. The semi-gloss finish is waterproof and built for outdoor use, and the aluminum construction prevents solvent loss, so it survives in the glove box.
The thing everyone raves about is the match — over 800 owners call it out as a positive, with quality and functionality close behind. The color match itself gets mixed feedback, though: some find it perfect for a 10-year-old car, others say it runs slightly darker than fresh paint. The pen applicator also needs a light touch, or it can pool paint.
What owners love
- Massive owner base confirms consistent results across many GM models
- 2-in-1 fine tip and brush covers different scratch sizes
- Aluminum body stops the paint from drying out in storage
What to watch
- Color can read slightly darker on older, sun-faded panels
- Pen tip demands a steady hand to avoid pooling
Choose it for: a well-tested, widely-available touch-up pen for everyday chips and light scratches.
Consider the alternative: if your paint has faded after years of sun, a custom-matched aerosol will blend better.
5. Carsupro 2 in 1 Touch Up Paint Pen
The chip-fixer with a smooth-flowing formula that owners find genuinely easy to lay down.
This 15 ml pen is calibrated for the WA8555 and WA848 codes and built for Chevrolet. What stands out in the review pool is the consistency — 43 owners praise how the paint flows and spreads, which is the #1 aspect buyers mention. The application earns its own praise at 40 mentions, and effectiveness draws 34, so the whole experience of using it is the selling point.
The 2-in-1 design gives you a pen tip for point scratches and a brush you twist out for strip scratches. The waterproof, rust-resistant formula protects the surface after repair. For deeper scratches, the maker suggests waiting 5 to 10 minutes between coats and repeating until the damage is covered.
The color match is the mixed bag here — it’s the most-discussed aspect but not a clean win. Some owners get a perfect match, while others find it too dark. It’s a fit question: on a 1998 Honda Accord white it was exact, but on a 2018 Subaru twilight blue it was “darn close” rather than perfect. On a newer Onyx Black car, your odds are better.
Flow is the star: the smooth consistency and easy application make this one of the least frustrating pens to use, even if the shade needs a test first.
Best suited to: drivers who want a forgiving, smooth-flowing pen for a handful of chips on a newer car.
Not ideal if: your finish has oxidized — a slightly darker dry-down will be more noticeable.
6. Marksfit Touch Up Paint Pen for Chevrolet
The Chevy pen that owners say matched their sterling metallic exactly, brush and ball end included.
Owners of Chevy Colorado and Silverado trucks report this 0.4 oz pen matches perfectly, with one calling it “true to Chevy Colorado 2026 sterling metallic gray.” The 2-in-1 design includes a brush for larger chips and a ball pen end for fine scratches, and the whole kit reads as a quality paint pen at a fraction of dealer cost.
The chip-resistant, fast-drying formula offers strong adhesion, anti-rust, and waterproof protection. The maker recommends shaking for 10–20 seconds before use and testing on paper first. The gloss finish blends into the surrounding clear coat on newer vehicles.
One owner found the color “close but not the same vibrance” on their truck, so there’s a minor caveat on fade. If your paint is a few years old and sun-bleached, the fresh gloss black may stand out slightly. The packaging and ease of use got praise even from the reviewer who flagged the shade difference.
Match confidence: on a clean, newer Chevy, the WA8555 match is spot-on; on a weathered older paint job, expect a subtle difference.
Reach for it if: you drive a recent Chevy with light chips and want a pen that lays down a true gloss match.
Think twice if: your truck’s paint has visibly faded — pair it with a polish pass after curing.
7. Cardiality Touch Up Paint Pen
The value-minded pen that gives near-invisible repairs after a couple of thin coats.
This 15 ml metallic pen targets Chevrolet and covers the WA8555 and WA848 codes, with a two-in-one design for brush and pen application. The nail-polish-like consistency flows smoothly from the pen, and owners found it dries fast with a near-invisible repair on small chips and light scratches. For deep black scratches, a 2023 owner said it “covers well” and delivers a “darn good” result.
The dry time is 10 minutes, and the waterproof formula holds up outdoors. The maker’s guidance is to apply thin coats along the scratch direction, and multiple coats give the best match on metallic finishes. A 21-inch Equinox RS EV rim matched exactly, proving the WA8555 code works on GM wheels too.
The color gets mixed feedback in the broader pool — some find it good, others too dark. Owners with pearl white finishes warn it looks flat, though that’s a different color code entirely. It’s not OEM-perfect, but the value is hard to argue with for small repairs.
Thin coats win: apply lightly and build up layers — that’s the trick owners used to get near-invisible results on metallic paint.
Budget pick for: minor chips and light scratches where a near-match beats a visible rust spot.
Pass if: you demand a flawless factory finish on a large area — you’ll want a full aerosol instead.
8. RSACET Touch Up Paint for GM Family
The one pen that spans Chevy, GMC, Buick, and Cadillac with a three-step application.
This 0.41 fluid ounce pen is the widest-fit option on the list, covering Chevrolet GMC Buick Cadillac models and matching the WA8555 and WA848 codes. The application is a simple three-step process: clean the surface, shake 30 seconds, apply the paint. The metallic finish withstands extreme temperatures and resists fading over time.
Owners found the repairs blend well — one called it a “great scratch and ding cover” that held up a month through rain and humidity on an 8-year-old dark blue car. The pen format with a brush in the cap makes it easy to fill bigger spots first while the paint flows fast.
The consistency is the most-discussed weakness, with several owners noting it’s too watery to use effectively. One called it “very runny” with a yellow tint, though that complaint was about a white paint version. It’s a temporary fix that will cover a scratch in a pinch, but it’s not a show-quality repair.
Where it shines
- Single pen covers four GM brands and two color codes
- Weather-resistant formula holds up through rain and humidity
- Simple 3-step process with a brush in the cap
The catch
- Consistency can run thin — test on scrap before touching your paint
- Best as a temporary guard, not a permanent cosmetic fix
Good for: a quick, weather-resistant cover on a daily driver where you just want to stop rust.
Look past it if: you want a flawless blend on a prized paint job — the watery flow fights precision.
9. SEM 19423 Black Factory Pack Aerosol
The shop-grade aerosol that DIYers use to save thousands on rust and panel repairs.
This is the big one — a 12 oz aerosol can of GM WA8555 Black that’s built for production work. The maker claims it saves hours per job, reduces booth bottlenecks, and lowers material cost. Its superior adhesion, flexibility, and hiding power suit full-panel and rust repairs.
Owners have used it for complete rust repairs on Onyx Black Silverados, with results that survived wet sanding, buffing, and a 2K clear coat. One owner matched a 2017 Silverado perfectly after blending and clearing, while another called it a perfect factory match on a 90s Chevy Suburban.
The color match is close but not flawless for every owner — one CTS owner noted it’s “not as dark and does not have glitter as WA8555.” The finish is also picky about prep: it needs proper shaking, sometimes a warm-water bath, and a clear coat on top for the gloss. Some owners reported light scuffs if it isn’t cleared.
The cost saver: owners mention doing a repair themselves for around in materials versus a body shop quote — the biggest single savings on this list.
For the ambitious DIYer: if you’re fixing rust, a bumper, or a whole panel, this 12 oz can is the most economical path to a pro finish.
Not for quick chips: a touch-up pen is faster and less messy for a single pebble ding.
Understanding the Specs
Color Code WA8555
This is the GM factory code for Onyx Black, a metallic gloss used across Chevrolet, GMC, Buick, and Cadillac. Some listings combine it with WA848, which is a related GM black shade. Always check your vehicle’s door jamb sticker to confirm the exact code before buying.
Format: Pen vs Aerosol
Pens with a fine tip and brush are for chips and light scratches — they give you control but limited volume. Aerosol cans cover large areas like panels and bumpers but require masking, prep, and a clear coat. Match the format to the size of your damage.
FAQ
What does WA8555 mean on GM paint?
Is WA8555 the same as GBA?
Will a WA8555 pen match my Chevy or GMC truck?
How long does touch-up paint take to dry?
Do I need a clear coat on top of WA8555 paint?
Can I use a WA8555 pen on my wheels or rims?
How much area does a touch-up pen cover?
Is aerosol spray paint better than a touch-up pen?
Final Thoughts: The Verdict
For the majority of shoppers, the wa8555 spray paint winner is the Artbreath Touch Up Paint because it nails the Onyx Black match for GMC owners with a fast-drying, 2-in-1 pen — and the crowd backs it with a 4.5-star average. If you want a genuine dealer-grade kit with clear coat included, grab the GM ACDelco 2-In-1. And for a full panel or rust repair on a budget, the SEM Factory Pack is the one to reach for.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of August 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, GoCarLife earns from qualifying purchases. This does not affect which products we feature.