2019–2020 AEV Traumahawk, Liquid Spring DS135RS3-DM, Liquid Spring DS135RS3A and 1 other model Recall: Rear brake caliper flexible line may have been routed so that it contacts…
NHTSA campaign 20V300000 · Service Brakes, Hydraulic · filed May 23, 2020 · verified Jul 30, 2026
The defect
Halcore Group, Inc. (Halcore) is recalling certain 2019-2020 American Emergency Vehicle TraumaHawk Type 1 ambulances built on RAM 4500 and 5500 chassis equipped with Compressible Liquid Adaptive Suspension Systems (C.L.A.S.S.), part numbers DS135RS3A, DS135RS3AF, DS135RS3-DM. The rear brake caliper flexible line may have been routed so that it contacts a suspension component, possibly causing excessive wear and a loss of rear brakes. The affected system component is the rear brake caliper flexible line which may be causing brake caliper to wear due to contact suspension components.
The risk
A worn rear brake caliper flexible line may cause brake fluid leakage which may result in a partial or complete loss of the rear brakes, increasing the risk 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
Halcore will notify owners, and dealers will inspect the rear brake caliper flexible lines for wear and install a kit to modify the rear brake caliper flexible line mounting, and if necessary, a kit to replace worn brake lines, free of charge. Owners may contact Halcore customer service at 1-800-447-0343.
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 |
|---|---|---|
| AEV | Traumahawk | 2019, 2020 |
| Liquid Spring | DS135RS3-DM | — |
| Liquid Spring | DS135RS3A | — |
| Liquid Spring | DS135RS3AF | — |
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Other campaigns involving AEV vehicles
Source: NHTSA recall database, campaign 20V300000. Data last verified Jul 30, 2026.