NHTSA recall 26V603000
Fuel System, Diesel · Forest River, Inc.
September 21, 2026report date
16units affected
Vehicle recalltype
Details
What's wrong: The engine pre-heat pump may have been improperly installed, causing the coolant hose to fail.
Why it matters: A coolant hose failure can cause the engine to overheat, increasing the risk of a crash.
The fix: Dealers will re-pin the wiring harness, re-route the coolant hoses, and replace parts as necessary, free of charge. Owner notification letters are expected to be mailed October 31, 2026.
Affected vehicles on MotorDeets
All model years NHTSA lists
2026 Dynamax Grand Sport Gt, 2027 Dynamax Grand Sport Gt.
Recalls can cover only some VINs. Check yours on NHTSA's official recall page for 26V603000.
Source: NHTSA recall records. Summary shortened; the official notice has the full text.