AI Damage2026 Grand Design Lineage: common problems
The maker issued 9 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 9
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 3 |
| Other | 0 | 0 | 6 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This bulletin describes the procedure to install the Compressor Power Relay Upgrade on affected Lineage units
The upgrade routes the A/C compressor positive power feed through a dedicated 120-amp relay, removing the compressor load from the control board. The upgrade is supplied as SDG kit 5000041 (GDRV PN 710676). GDRV has…
- 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.
- This bulletin describes the procedure to connect the 12-volt side of the water heater using harness…
This bulletin describes the procedure to connect the 12-volt side of the water heater using harness EL-2031 (410536) on affected Lineage units.
- This bulletin describes the procedure to replace the plastic threaded pivot fitting on the rain shower…
This bulletin describes the procedure to replace the plastic threaded pivot fitting on the rain shower head with a metal threaded pivot fitting on affected Lineage LVT1 units. The metal fitting addresses a failure of…
- This bulletin describes the procedure to relocate the LP solenoid power source from the chassis battery to…
This bulletin describes the procedure to relocate the LP solenoid power source from the chassis battery to the house battery on Lineage M-Series 25FW units equipped with an LP solenoid. The relocation uses retrofit…
- n response to concerns the entry steps may unexpectedly deploy on the Grand Design Lineage Class C…
n response to concerns the entry steps may unexpectedly deploy on the Grand Design Lineage Class C motorhomes GDRV has issued a service bulletin. Bulletin covers 2025-2026 Lineage Class C Motorhomes built with a sensor…
- Relates to concerns that the slide may not fully retract at the bottom, causing water intrusion
25FW Lineage models built between 5/6/24 - 7/25/25 are potentially affected.
Other years of this model
Questions and answers
What are the most common problems with the 2026 Grand Design Lineage?
There are no owner complaints in the NHTSA data for this year; the data comes from 9 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2026 Grand Design Lineage?
NHTSA lists 9 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2026 Grand Design Lineage from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2026 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.