NHTSA recall 26V603000
Fuel system, diesel › Pre-heater
Dynamax Grand Sport GT
Reported Sep 21, 202616 vehicles affectedForest River, Inc.Maker’s number 40-2097Built Dec 24, 2025 – Apr 30, 2026
The defect
Forest River, Inc (Forest River) is recalling certain 2026-2027 Dynamax Grand Sport GT recreational vehicles. The engine pre-heat pump may have been improperly installed, causing the coolant hose to fail.
The risk
A coolant hose failure can cause the engine to overheat, increasing the risk of a crash.
The remedy
Dealers will re-pin the wiring harness, re-route the coolant hoses, and replace parts as necessary, free of charge. Owner notification letters were mailed October 20, 2026. Owners may contact Forest River customer service at 1-574-522-1583. Forest River's number for this recall is 40-2097.