GMC RV Locking Fuel Door: Built for the Round GM Bezel
GMC Savana cutaways and GMC TopKick medium-duty chassis share the same round factory fuel bezel as their Chevrolet twins, with the cap left out in the open. The RV Fuel Vault Round door bolts right over it and locks.
Why a Locking Gas Cap Is Not Enough
- ✖GMC-chassis motorhomes leave the factory with an exposed, unlocked fuel cap in a round bezel
- ✖Rectangular RV fuel doors built for Ford chassis do not fit the round GM bezel
- ✖An exposed cap invites fuel theft, siphoning and contamination
- ✖A locking gas cap can be pried off in seconds and leaves the bezel exposed
Why a Locking Fuel Door Beats a Locking Gas Cap
- Exact fit for the round factory bezel shared by GMC and Chevrolet chassis
- Tamper-resistant keyed lock secures the cap inside a heavy-duty enclosure
- Bolt-on in minutes with the included round-bezel security screws, no drilling
- 2-Pack doors are keyed alike, so one key opens both fuel ports
- Optional lock dirt & dust cap keeps the keyway clean
- Designed and made in the USA, backed by a Limited Lifetime Warranty
Before & After: Your RV's Exposed Fuel Cap vs. a Locking Fuel Door
Why You Need a Locking Fuel Door
Lead with finish. End with security.
Factory-Finished Look
A clean cover for the round bezel. No more bare cap on the side of your coach.
Fuel Theft Prevention
Keyed lock stops siphoning at campgrounds, rest stops and storage lots.
Contamination Defense
Blocks water, dirt, sugar or anything else from reaching your fuel.
Vandalism Protection
Tamper-resistant enclosure deters damage to your fuel system.
How It Installs — 8–15 Minutes, No Drilling, No Cutting
8–15 Minutes
Average install time
Basic Hand Tools
No special equipment needed
100% Reversible
No drilling, no cutting, no mods
Compatible GMC Savana 3500 / 4500 · GMC TopKick C4500 / C5500 Motorhomes
The GMC Savana 3500/4500 cutaway is the twin of the Chevrolet Express 3500/4500, and the GMC TopKick C4500/C5500 is the twin of the Chevrolet Kodiak. They use the same round fuel bezel, so the same Round door fits. Gas Class C coaches on the Savana take the Round Door Single. Super C coaches on the TopKick with two fuel ports take the Round Door 2-Pack. Use Find My Fit or call us to confirm your coach.
| Manufacturer | Models / Floorplans |
|---|---|
| GMC Savana 3500 / 4500 cutaway (Class C, gas) | Same fit as the Chevrolet Express 3500/4500 cutaway. Round Door Single. |
| GMC TopKick C4500 / C5500 (Super C) | Same fit as the Chevrolet Kodiak C4500/C5500. Round Door 2-Pack for coaches with two fuel ports. |
| Chevrolet twins | See our Chevy chassis page for confirmed coach models on the Chevrolet 3500, 4500, Silverado 5500HD, C5500, C6500 and Kodiak. |
Frequently Asked Questions
Common questions about The RV Fuel Vault on GMC Savana 3500 / 4500 · GMC TopKick C4500 / C5500 motorhomes
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Single Door, Set of 2, or 3-Pack · Limited Lifetime Warranty · 30-Day Guarantee
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