AI Damage2021 Keystone Montana: common problems
The maker issued 7 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 7
Components owners complain about
Comparison
What to check before buying
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Revision of KSB-210122
It has been determined the units in this KSB population may develop sidewall cracks at both front slideouts. Only units that develop a crack will require this repair, if the sidewall is not cracked, no repair is needed.
- It has been determined the units in this KSB population may develop sidewall cracks at both front slideouts
Only units that develop a crack will require this repair, if the sidewall is not cracked, no repair is needed.
- Revised repair instructions for KSB-221025 - This process describes how to inspect and add an End of Line…
Revised repair instructions for KSB-221025 - This process describes how to inspect and add an End of Line Resistor (EOL) to the In-Command system that may be exhibiting erratic readings on HVAC and/or lose…
- This is the repair instructions for KSB-210122 (first and second versions sent to dealers)
It has been determined the units in this KSB population may develop sidewall cracks at both front slideouts. Only units that develop a crack will require this repair, if the sidewall is not cracked, no repair is needed.
- This is the inspection instructions for KSB-210218, Inspection Process Sidewall Cracks
The information and instructions in a Keystone Service Bulletin (KSB) are intended to inform RV dealership Service Managers/Technicians of situations that may occur with some Recreational vehicles so dealership…
- This is the revised repair instructions for KSB-180328
The information and instructions in a Keystone Service Bulletin (KSB) are intended to inform RV dealership Service Managers/Technicians of situations that may occur with some Recreational vehicles so dealership…
Other years of this model
Questions and answers
What are the most common problems with the 2021 Keystone Montana?
There are no owner complaints in the NHTSA data for this year; the data comes from 7 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2021 Keystone Montana?
NHTSA lists 7 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 2021 Keystone Montana 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 2021 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 2026-11-04.