Tonneau Cover

briansol · January 6, 2023

I just purchased my 19 1500 Denali used, so I don't 100% know what I have.

How can I tell what bed liner i have? I know it's the short bed, but i don't know if t's the carbon one or not. It doesn't look like it's CF, but i can't be sure.

What are you all using for Tonneau covers?

I'm looking for one that will lock with the tail gate (so i can travel with suitcases/etc and not worry about things at truck stops/restaurants)

Must be waterproof.

must be 'easy' to get into and re-latch for in and out access.

I'm debating a slide-up vs a tri-fold and there's 20 brands of each. What do you all have?

PureZ71 · January 7, 2023

Mainly depends on your budget. Did you have one in mind?

These are the two I've had. I started out with the gator one but needed more and more of the truck bed so switched to the retrax one. Both work with the tailgate and are waterproof (especially since I'm in Seattle, that was a must).

Gator EFX Hard Fold Tonneau Cover

RetraxPro XR Tonneau Cover

Dirk13 · January 8, 2023

The badge on the fender will say “CarbonPro” if you have the carbon bed. Also it’s not covered by a spray in bed liner (from the factory) like the normal bed will be on a Denali. Look up google images of a carbon pro bed and compare them to yours. If you’re still unsure, post a picture on the inside of your bed.

Just an FYI more “hard tri fold” covers like Undercover flex, bakflip MX4, etc. are NOT waterproof. If that’s a must for you you want to look for one that specifically says it’s waterproof and avoid ones advertised as just water “resistant.”

briansol · January 9, 2023

ok thanks for that info. I don't have the carbon liner then, as it just says GMC on it. I ended up finding the window sticker folded up in a manual in the glove box and it also is not listed so i think it's confirmed.

Yes, water proof is a must. I was looking at the roll up with drains the RetraxPro XR. I assume i can use one of the pre-existing drains in the bed liner floor? I won't want to cut/drill.

PureZ71 · January 11, 2023

On 1/9/2023 at 9:30 AM, briansol said:

ok thanks for that info. I don't have the carbon liner then, as it just says GMC on it. I ended up finding the window sticker folded up in a manual in the glove box and it also is not listed so i think it's confirmed.

Yes, water proof is a must. I was looking at the roll up with drains the RetraxPro XR. I assume i can use one of the pre-existing drains in the bed liner floor? I won't want to cut/drill.

For my silverado, there was already two hole that I feed the drain pipes into. Cant confirm for seirras.