Electrical system: software; service brakes, hydraulic: antilock/traction control/electronic limited slip: abs warning light; service brakes, hydraulic; service brakes, hydraulic: antilock/traction control/electronic limited slip: control unit/module (International Motors)
Vehicle recall 20V-319. NHTSA received General Motors LLC’s report on May 29, 2020.
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The short answer
NHTSA received General Motors LLC’s report on May 29, 2020. Copied from NHTSA on Oct 28, 2026.
Every line below is in NHTSA’s own words, with its source beside it.
What’s wrong with it?
If a driver is unaware that the ABS system is malfunctioning, there may be an increased risk of a crash.
General Motors is recalling certain 2019-2020 Chevrolet 4500HD, 5500HD, and 6500HD Medium Duty trucks.
If the vehicle’s body control module (BCM) loses communication with the vehicle’s electronic brake control module (EBCM), the EBCM software programming may not illuminate the vehicle’s ABS malfunction indicator light (MIL).
As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard (FMVSS) Number 105, “Hydraulic and Electric Brake Systems.”
NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.
- NHTSA’s part: Electrical system: software.
- NHTSA’s part: Service brakes, hydraulic: antilock/traction control/electronic limited slip: abs warning light.
- NHTSA’s part: Service brakes, hydraulic.
- NHTSA’s part: Service brakes, hydraulic: antilock/traction control/electronic limited slip: control unit/module.
What should you do?
GM will notify owners, and dealers will update the software calibration for the body control module (BCM). The recall began June 29, 2020. Owners may contact Chevrolet customer service at 1-800-222-1020. GM’s number for this recall is N202305070.
NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.
- How to reach the firm: 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.
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 12,200 vehicles potentially involved, across everything this recall names.
Each model year opens its own page: every recall naming it, its owner complaints and its crash ratings.
NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.
Who is recalling it?
- Made by General Motors LLC.
NHTSA, Recalls flat file. Released Oct 28, 2026. Updated daily.
What the record doesn’t say
- NHTSA’s recall file doesn’t say whether anyone was hurt. Owners’ complaints are counted on each vehicle’s page.
- Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
- How many have been returned or fixed isn’t in the notice.
Hearth Record wrote these lines.
Sources
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National Highway Traffic Safety Administration, Recalls flat file (FLAT_RCL_POST_2010).
Released Oct 28, 2026 and checked Oct 28, 2026. Updated daily. Public domain (U.S. Government work).
Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 28, 2026.