How to Restore a Faded Chevy Avalanche Tonneau Cover: 4 Products Tested

Park a first-generation Avalanche next to anything else and the cladding is what dates it. There is a lot of plastic on these trucks — the whole three-piece bed cover, the side skirting, the tool box lids, the cowling from the rear door down to the box, and the roof trim. The cover and the roof plastics sit flat to the sun all day, so they go chalky grey long before the paint looks tired.

Mine is a 2007, and the cover had gone the way they all go: flat, dry and grey, with no depth left in the black. So I ran four products I already use side by side on the same cover.

Read this as an initial appearance comparison, not a durability test. All four went on the same afternoon, and what you see below is how they looked right after application. Where I mention how long something lasts, that is prior experience on this truck — not something this test has proven. I am checking back at one, two and three months.

The cover before, and how I set the test up

Flat grey, no depth, no shine. On black cladding the fade reads as a colour change more than a dull finish — the panel stops looking like black plastic and starts looking like grey plastic. The cover and the roof trim were the worst of it. Where you live changes the intervals — I am in Canada and reapply less often than someone in Florida would, so treat every number here as a northern one.

Four products went onto four sections of the same cover on the same afternoon, in the order I would recommend trying them — quickest first, longest lasting last: Black Magic Tire Foam, a graphene tire dressing, SOFT99 Tire Black Wax, then Carworx Refinish Restorer. Everything got cleaned first, and I left the far side of the cover untouched so there was untreated cladding sitting beside the treated panels for reference.

This test is dressings only. A permanent answer is a different job: scuff, sand and spray the cladding with an SEM black trim paint, or line it.

Black Magic Tire Foam

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Black Magic 36201 Tire Foam Cleaner, 510 g is the classic aerosol foam and the least work of anything here. Spray it on, let it sit, come back — no applicator, no rag, no gloves. I keep a can around because it does not attract dust the way most tire foams do, which matters if your truck sees gravel lots. Same can I use on engine bay plastics; it is sold as a tire and trim foam, so read the label.

It is the hardest one to judge on the day, because it takes a while to dry and still looked wet when I compared the four panels — a limitation of the same-day comparison rather than a knock on the product. It cleans as it goes and pulls the grey back toward black, but it is the shortest-lived here at about a week.

Graphene tire dressing

Number two is a spray-and-wipe. Mist it on, light wipe with a clean rag, and you can see immediately what you have. No mess, no gloves.

Of the four, this was the best-looking of the quick options right out of the gate. It has real depth to the black rather than sitting on top of the panel, and it laid down evenly — no streaking or blotching on my cover. It holds roughly a month for me: fast enough to do before you take the truck somewhere, and it lasts long enough to be worth doing.

The bottle in the video is the Simoniz graphene dressing sold at Canadian Tire. Adam’s Polishes Graphene VRT is the same product type for anyone shopping in the US, not the exact bottle on camera.

SOFT99 Tire Black Wax

SOFT99 Tire Black Wax, 170 g behaves differently. It has a foam applicator pad built into the container and works almost like a dye — a black-coloured product you dab on and spread across the panel, then wipe in with a rag. It is the most awkward of the four to apply, you want gloves for it, and it smells the worst of anything in the test by a wide margin.

The finish is where it loses me. It covers well in a single pass and the grey is gone, but it is flat — no depth, no shine, more matte surface than restored plastic. That might be exactly what some people want, and it does hold: about six months on my truck, well past the foam or the graphene dressing. It just does not look like the others while it is doing it.

Carworx Refinish Restorer

Carworx Refinish Restorer is the one I keep coming back to, and the most work of the four. It is oil-based, it needs more than one coat, and it stays sticky until it dries, so gloves are not a suggestion. I skipped them partway through and spent the rest of the video with sticky hands.

It is a pour-and-rag job. After the first pass the panel was noticeably darker than the untreated section beside it, but nowhere near finished — it steps darker with every coat. After two coats it was still one shade lighter than I wanted, so a third was needed.

I did not get to finish it — I ran out partway through that third coat, so the upper fairings and roof trim are still waiting on another bottle. Fair warning about how much a full Avalanche eats; my rough take is a big bottle covers one truck for three to five years. What it gives you is the depth of the graphene dressing with real longevity behind it, up to a year in previous use on this truck.

The four products side by side

Product	Application	Finish	Immediate Result	Main Drawback	Initial Verdict
Black Magic Tire Foam	Aerosol, spray on and leave it	Matte once dry	Hard to judge same-day — still wet at comparison	Shortest-lived; about a week for me	The quick fix before you go somewhere
Graphene tire dressing	Spray, wipe with a clean rag	Noticeable depth, mild gloss	Best of the fast options; even, no streaking	Roughly a month before redoing	Best appearance per minute of work
SOFT99 Tire Black Wax	Built-in applicator, dab and spread. Gloves	Flat matte, no depth	Covers the grey in one pass	Awkward to apply, worst smelling	Longevity without the look
Carworx Refinish Restorer	Oil-based, rag, multiple coats. Gloves	Deepest black of the four	Darker after one coat, third still needed after two	Most work, and sticky until dry	Best result on the day

Which one gave the best initial result

The Carworx, and it was not close on depth. It is the only one that made the panel look like black plastic again rather than dressed grey plastic, and the only one you can keep building until it is where you want it. The trade is time and mess.

For the best result in ten minutes it is the graphene dressing — most of the depth, no gloves, no fuss. That is a real answer for a lot of owners, not a consolation prize. The foam is the easiest thing here and the wax genuinely lasts, but on looks alone, on the day, they finished third and fourth.

What this test does not tell you yet

• No durability has been measured. The week, month, six month and one year figures are prior experience on this truck, not results from this comparison.
• The tire foam was still wet at judging time, so its dried appearance is not fairly represented.
• The Carworx section is unfinished. I ran out before completing the third coat, so the upper fairings and roof trim are not at final colour.
• One cover, one climate, one condition of plastic. A cover further gone than mine may not take these the same way.

Application tips from this test

• Clean the panel first. All four go over the surface, not into it.
• Keep a small paint brush handy for the rivets holding the cladding on and the corners a rag will not reach.
• Gloves for the wax and the Carworx. One is a dye, the other is oil-based and tacky until it cures.
• Leave a section untreated while you work. Original cladding beside the treated panel is the only honest way to tell whether you are getting darker or just getting wet.
• Buy more Carworx than you think you need.

Final verdict

Buy the Carworx and accept that it is an afternoon rather than a five-minute job. Keep graphene dressing for the in-between months and Black Magic foam for the night before you go somewhere. The SOFT99 wax is the odd one out for me — it works and it lasts, it just does not look the way I want the cover to look. Ask me again in three months and I will tell you which of those opinions survived a season.

Cladding only gets you so far on its own — I went through wet sanding the oxidized headlights on this same Avalanche separately, and the two jobs together are what change how the truck reads. For everything else, start at the GMT900 owner’s hub.

Common questions

How many coats of Carworx Refinish Restorer does a faded cover take?

On mine, more than two. One coat was clearly darker than the untreated section, two was still a shade light, and a third was needed. Plan on three and buy enough to finish.

Does the 2002 Avalanche work the same way?

The 2002 came with grey cladding rather than black, so you are changing its colour instead of restoring it. On my 2002 2500 with the 496 the Carworx does turn that grey trim black.

Tell me what you run

Watch the video above if you want to see the difference between the four panels, because depth of black photographs badly and describes worse. Then tell me what has worked on yours — especially if you have run something long enough to know how it wore, not just how it looked on day one.

Join the discussion thread on the FullSizeChevy forum — it is in the Detailing section, and I am asking two things there: what you have used on the factory Avalanche tonneau panels, and how long it lasted before it faded again.

Find every repair, buying, maintenance, and troubleshooting guide in the GMT900 Owner’s Hub.