Pulling into a campsite and finding it slopes like a ski run is one of the universal RV experiences. And while sleeping at a slight tilt might be mildly annoying, an unlevel rig causes real problems — absorption refrigerators can fail, slide-outs bind, doors swing open on their own, and the plumbing doesn't drain correctly. The good news: leveling is a skill you can master in about ten minutes once you understand the sequence.
Why Leveling Matters More Than Comfort
Your RV's systems were designed to operate on a level plane. Absorption-type refrigerators — still common in travel trailers and fifth wheels — rely on gravity to circulate coolant. Even a three-degree tilt can reduce cooling performance, and sustained off-level operation can permanently damage the cooling unit. Slide-out mechanisms experience uneven loads when the frame is twisted, and water doesn't flow to drains properly, leaving standing water in sinks and shower pans.
Beyond the mechanical concerns, an unlevel RV puts uneven stress on the frame, stabilizer jacks, and entry steps. Get it level first, stabilize second — your rig will thank you with fewer warranty calls.
The Two-Axis Approach: Side-to-Side First
Leveling happens in two stages, always in this order: correct the side-to-side lean first, then address front-to-back pitch. The reason is simple — side-to-side correction is done by driving onto blocks or ramps, which means the RV needs to move. If you level front-to-back first using your tongue jack or landing gear, you'll undo that work the moment you drive forward onto blocks.
Step 1: Read the Slope
Before you unhitch or even get out of the cab, take a reading. Place a bubble level on a flat interior surface — a countertop or the floor near the center of the rig works well. Many RVers keep a small torpedo level on the dashboard. Smartphone level apps work in a pinch, though a physical level is faster and more reliable. Note which side is low and roughly how many inches of correction you need.
Step 2: Place Your Blocks or Ramps
On the low side of the RV, place your leveling blocks or ramp system in front of (or behind) the tires. For stackable blocks like the Camco FasTen or Lynx Levelers, build a stack tall enough to raise the low side to level — each block adds roughly one inch. For curved ramp systems like the Andersen Camper Leveler or Beech Lane Levelers, position the ramp so the tire rolls up to the correct height. Ramp-style levelers handle up to about four inches of correction and are faster for moderate slopes.
Step 3: Drive Onto the Blocks
With a spotter guiding you (or a leveling app like LevelMate Pro on your phone), slowly drive or pull the RV onto the blocks until your level reads flat side-to-side. Set the parking brake immediately. If you're solo, drive forward a few inches, get out and check, and adjust as needed — it gets intuitive quickly.
Step 4: Chock the Wheels
Once the RV is side-to-side level, chock the wheels that are not on blocks to prevent any rolling. Never rely on the parking brake alone. X-style wheel chocks work especially well for tandem axle trailers because they lock between the two tires.
Front-to-Back Leveling
With side-to-side handled, now address the front-to-back pitch using your RV's built-in jacks.
Travel Trailers: The Tongue Jack
For a travel trailer or pop-up, raise or lower the tongue jack until the bubble centers on the front-to-back axis. If the front is too low, raise the tongue jack. If it's too high, lower it. Electric tongue jacks make this effortless — manual ones just take a bit of cranking.
Fifth Wheels: The Landing Gear
Fifth wheels use front landing gear (two hydraulic or electric legs) instead of a tongue jack. After unhitching from the truck, use the landing gear to raise or lower the front of the trailer until level. Most fifth wheels have a slight front-to-back adjustment range of six to eight inches.
Motorhomes: Leveling Jacks
Many Class A and Class C motorhomes come with hydraulic auto-leveling systems from manufacturers like HWH, Lippert, or Bigfoot. Press the button on the control panel, and the system extends jacks at each corner and levels the coach automatically. If your motorhome lacks auto-levelers, use stackable blocks under the low-side tires the same way you would with a trailer, then use manual jacks for fine-tuning.
Deploy Stabilizer Jacks Last
Once the RV is level on both axes, now extend the stabilizer jacks. These are not leveling devices — they prevent rocking and bouncing when you walk around inside. Crank them down until they make firm contact with the ground (or a jack pad), but don't keep cranking to try to lift the RV. Over-extending stabilizers can bend the frame or pop a tire off the blocks.
Auto-Leveling Systems
If you're shopping for an upgrade, automatic leveling systems from Lippert (Ground Control 3.0) and HWH eliminate the guesswork entirely. These systems use electronic sensors and hydraulic jacks to level the RV in under two minutes at the push of a button. They're common factory equipment on Class A motorhomes and premium fifth wheels, and aftermarket kits are available for travel trailers — though installation is a significant investment (typically $2,000–$4,000 installed).
For a less expensive tech option, the LevelMate Pro is a Bluetooth sensor that sticks to your RV frame and reads out on your phone, telling you exactly how many inches of correction each side needs before you even get out of the cab.
Common Leveling Mistakes
Leveling front-to-back first. This is the most common beginner error. You'll undo the tongue jack work when you drive onto blocks. Always do side-to-side first.
Stacking blocks too high without a ramp. If you need more than three or four blocks stacked, place a single block in front as a ramp — otherwise the tire can push the stack out from under itself when you try to drive up.
Forgetting to chock. Leveling blocks are not chocks. An RV can roll off a ramp, especially on a slope. Always chock.
Over-cranking stabilizers. Stabilizers stabilize, they don't level. If you're using them to lift the rig, the frame is absorbing forces it wasn't designed for.
Skipping the level check after extending slides. Slide-outs shift hundreds of pounds of weight. Re-check your level after deploying them and make minor adjustments if needed.
Frequently Asked Questions
Within one to two degrees of level is generally sufficient. Absorption refrigerators are the most sensitive component — most manufacturers specify a maximum operating angle of about three degrees off-level. If your fridge is a compressor-style residential unit, you have more tolerance.
Yes, cut 2×8 or 2×10 lumber into roughly 8×10-inch blocks. They're cheap and effective. The downsides are weight, bulk, and eventual cracking or rotting if they stay wet. Commercial interlocking blocks are lighter and stack more securely.
For travel trailers, level side-to-side while still hitched (you need to drive onto blocks). Then unhitch, then level front-to-back with the tongue jack. For fifth wheels, the process is the same — drive onto blocks while connected, then disconnect and adjust with landing gear.