2026–2027 Dynamax Grand Sport GT Recall: Engine pre-heat pump may have been improperly installed, causing the…
NHTSA campaign 26V603000 · Fuel System, Diesel · filed Sep 21, 2026 · verified Sep 27, 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.
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 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. Owners may contact Forest River customer service at 1-574-522-1583. Forest River's number for this recall is 40-2097.
Affected vehicles
| Make | Model | Model years |
|---|---|---|
| Dynamax | Grand Sport GT | 2026, 2027 |
Related recalls
More Dynamax Grand Sport GT recalls
Other campaigns involving Dynamax vehicles
All Dynamax Grand Sport GT recalls → · All Dynamax recalls →
Source: NHTSA recall database, campaign 26V603000 (manufacturer number 40-2097). Data last verified Sep 27, 2026.