AC may not cool efficiently
Grand Design technical service bulletin M920023 for 2025-2026 Grand Design Lineage.
- Bulletin number
- M920023 (M920023)
- Component
- Unknown or other
- Summary
- AC may not cool efficiently. Process walks dealer through how to install a direct dump feature to the AC system and add insulation in the front cab area.
Vehicles covered
- Grand Design Lineage 2025-2026 20252026
VIN decoder
See the problems and recalls for an exact car
Buying a used Grand Design Lineage?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history