2018–2021 Cruiser Shadow Cruiser, 2020–2021 Heartland Lithium, 2018–2021 Heartland Mallard and 7 other models Recall: Regulator may fail, causing an increase in propane pressure
NHTSA campaign 21V428000 · Equipment · filed Jun 4, 2021 · verified Jul 30, 2026
The defect
Heartland Recreational Vehicles, LLC. (Heartland) is recalling certain 2018-2021 Mallard, Shadow Cruiser, Sundance XLTTT, Wilderness, Prowler, Trail Runner, 2018-2019 Pioneer, Terry Classic, 2020-2021 Lithium, and 2021 North Trail trailers equipped with a Winntec model 6020 two-stage propane regulator. The regulator may fail, causing an increase in propane pressure.
The risk
Increased propane pressure can enlarge the flames in gas appliances, increasing the risk of a fire.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Dealers will replace the regulator and test the propane system for leaks, free of charge. Owner notification letters were mailed August 3, 2021. Owners may contact Heartland customer service at 1-877-262-8032.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Affected vehicles
Related recalls
More Cruiser Shadow Cruiser recalls
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Other campaigns involving Cruiser vehicles
All Cruiser Shadow Cruiser recalls → · All Cruiser recalls →
Source: NHTSA recall database, campaign 21V428000. Data last verified Jul 30, 2026.