2015–2023 Mack Granite (GR), 2015–2023 Mack Granite (gu) Recall: Turn signals may be positioned incorrectly, reducing their visibility
NHTSA campaign 23V600000 · Exterior Lighting · filed Aug 25, 2023 · verified Jul 30, 2026
The defect
Mack Trucks, Inc. (Mack) is recalling certain 2015-2023 GU and GR vehicles. The turn signals may be positioned incorrectly, reducing their visibility. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
The risk
Low turn signal visibility may not alert other drivers to a turning vehicle, 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
Dealers will add additional turn signal lighting, free of charge. Owner letters were mailed September 25, 2024. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0448.
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.nhtsa.gov.
Affected vehicles
Related recalls
More Mack Granite (GR) recalls
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Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 23V600000 (manufacturer number SC0448). Data last verified Jul 30, 2026.