TSB: SPARTAN FC-94, GLADIATOR, K1, K2, K3, K4, METROSTAR, METROSTAR RT, METROSTAR-X, MM, S-180 PUMPER (2021–2024)

Bulletin TSB23-520-001A — June 22, 2023

Bulletin Details

Bulletin IDTSB23-520-001A
ManufacturerSPARTAN
ModelsFC-94, GLADIATOR, K1, K2, K3, K4, METROSTAR, METROSTAR RT, METROSTAR-X, MM, S-180 PUMPER
Model Years2021–2024
Date IssuedJune 22, 2023
Date Added to NHTSAJuly 17, 2023
ComponentELECTRICAL SYSTEM
Vehicles Affected43 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

This service bulletin provides instructions to inspect and rewire 120V box in accordance with diagram. Revision to the previous bulletin released.

Affected Vehicles

MakeModelYearComponent
SPARTAN FIRE FC-94 2024 110000 ELECTRICAL SYSTEM
SPARTAN FIRE GLADIATOR 2024 110000 ELECTRICAL SYSTEM
SPARTAN K1 2024 110000 ELECTRICAL SYSTEM
SPARTAN K2 2024 110000 ELECTRICAL SYSTEM
SPARTAN K3 2024 110000 ELECTRICAL SYSTEM
SPARTAN K4 2024 110000 ELECTRICAL SYSTEM
SPARTAN FIRE METROSTAR 2024 110000 ELECTRICAL SYSTEM
SPARTAN FIRE FC-94 2023 110000 ELECTRICAL SYSTEM
SPARTAN FIRE GLADIATOR 2023 110000 ELECTRICAL SYSTEM
SPARTAN GLADIATOR 2023 110000 ELECTRICAL SYSTEM
SPARTAN K1 2023 110000 ELECTRICAL SYSTEM
SPARTAN K2 2023 110000 ELECTRICAL SYSTEM
SPARTAN K3 2023 110000 ELECTRICAL SYSTEM
SPARTAN K4 2023 110000 ELECTRICAL SYSTEM
SPARTAN METROSTAR 2023 110000 ELECTRICAL SYSTEM
SPARTAN FIRE METROSTAR 2023 110000 ELECTRICAL SYSTEM
SPARTAN FIRE METROSTAR-X 2023 110000 ELECTRICAL SYSTEM
SPARTAN MM 2023 110000 ELECTRICAL SYSTEM
SPARTAN FIRE FC-94 2022 110000 ELECTRICAL SYSTEM
SPARTAN GLADIATOR 2022 110000 ELECTRICAL SYSTEM
SPARTAN FIRE GLADIATOR 2022 110000 ELECTRICAL SYSTEM
SPARTAN K1 2022 110000 ELECTRICAL SYSTEM
SPARTAN K2 2022 110000 ELECTRICAL SYSTEM
SPARTAN K3 2022 110000 ELECTRICAL SYSTEM
SPARTAN K4 2022 110000 ELECTRICAL SYSTEM
SPARTAN METROSTAR 2022 110000 ELECTRICAL SYSTEM
SPARTAN FIRE METROSTAR 2022 110000 ELECTRICAL SYSTEM
SPARTAN FIRE METROSTAR RT 2022 110000 ELECTRICAL SYSTEM
SPARTAN FIRE METROSTAR-X 2022 110000 ELECTRICAL SYSTEM
SPARTAN MM 2022 110000 ELECTRICAL SYSTEM
SPARTAN FIRE FC-94 2021 110000 ELECTRICAL SYSTEM
SPARTAN GLADIATOR 2021 110000 ELECTRICAL SYSTEM
SPARTAN FIRE GLADIATOR 2021 110000 ELECTRICAL SYSTEM
SPARTAN K1 2021 110000 ELECTRICAL SYSTEM
SPARTAN K2 2021 110000 ELECTRICAL SYSTEM
SPARTAN K3 2021 110000 ELECTRICAL SYSTEM
SPARTAN K4 2021 110000 ELECTRICAL SYSTEM
SPARTAN METROSTAR 2021 110000 ELECTRICAL SYSTEM
SPARTAN FIRE METROSTAR 2021 110000 ELECTRICAL SYSTEM
SPARTAN FIRE METROSTAR RT 2021 110000 ELECTRICAL SYSTEM
SPARTAN FIRE METROSTAR-X 2021 110000 ELECTRICAL SYSTEM
SPARTAN MM 2021 110000 ELECTRICAL SYSTEM
SPARTAN FIRE S-180 PUMPER 2021 110000 ELECTRICAL SYSTEM

Related SPARTAN Recalls

CampaignModelYearComponentSummary
RV CHASSIS K2 2026 EXTERIOR LIGHTING:BRAKE LIGHTS Shyft Group (Shyft) is recalling certain 2025 Spartan RV Chassis K1, 2024-202...
RV CHASSIS K4 2027 EXTERIOR LIGHTING:BRAKE LIGHTS Shyft Group (Shyft) is recalling certain 2025 Spartan RV Chassis K1, 2024-202...
RV CHASSIS K3 2026 EXTERIOR LIGHTING:BRAKE LIGHTS Shyft Group (Shyft) is recalling certain 2025 Spartan RV Chassis K1, 2024-202...
RV CHASSIS K4 2026 EXTERIOR LIGHTING:BRAKE LIGHTS Shyft Group (Shyft) is recalling certain 2025 Spartan RV Chassis K1, 2024-202...
RV CHASSIS K1 2025 EXTERIOR LIGHTING:BRAKE LIGHTS Shyft Group (Shyft) is recalling certain 2025 Spartan RV Chassis K1, 2024-202...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized SPARTAN dealer. Bring this bulletin ID (TSB23-520-001A) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.