2020 Trans Tech Roadstar, 2020 Trans Tech SST, 2020 Trans Tech ST Aero Recall: Specific models are AC139SSSA409,AC139SSSP500, CC139DMSA409, CC139DMSA500…
NHTSA campaign 20V196000 · Electrical System · filed Apr 3, 2020 · verified Jul 30, 2026
The defect
Trans Tech Bus (Trans Tech) is recalling certain 2020 Roadstar, ST Aero and SST buses built on 2019 Chevrolet Express cutaway chassis. The specific models are AC139SSSA409,AC139SSSP500, CC139DMSA409, CC139DMSA500, CC139DMSP500, CC159DMSA509, CC159DMSA600,EC139DBSP400, SC139DSFP500, SC139DSSA409, SC139DSSA500, SC139DSSP500, SC159DSFP600, SC159DSSA509, SC159DSSA600, SC159DSSA603, SC159DSSP600, and SC177DSSA603. The seatbelt-unfastened warning light will not illuminate for approximately five seconds after the ignition is moved to the "on" or "start" position. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."
The risk
Without the seatbelt warning reminder, the driver may forget to fasten the seatbelt, increasing the risk of injury in the event 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
Trans Tech will notify owners, and GM dealers will reprogram the instrument panel cluster, free of charge. The recall began May 6, 2020. Owners may contact Trans Tech customer service at 1-845-988-2333.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
| Make | Model | Model years |
|---|---|---|
| Trans Tech | Roadstar | 2020 |
| Trans Tech | SST | 2020 |
| Trans Tech | ST Aero | 2020 |
Related recalls
More Trans Tech Roadstar recalls
- 2012–2017 Trans Tech CST and 4 other models — These air conditioning systems use a 30AMP in-line fuse…
- 2015 Trans Tech Bus ST Aero and 2 other models — Affected stop arms have a reflective decal that may peel…
- 2006–2011 Trans Tech Bus Roadster and 3 other models — Affected lifts are equipped with folding link arms that may…
- 2007–2014 Trans Tech Roadstar and 2 other models — Platform side plate of the affected wheelchair lifts may…
- 2011 Trans Tech AG139SSSP500 and 37 other models — Seats
Other campaigns involving Trans Tech vehicles
All Trans Tech Roadstar recalls → · All Trans Tech recalls →
Source: NHTSA recall database, campaign 20V196000. Data last verified Jul 30, 2026.