Use cautionVehicle recall · NHTSA · Published August 25, 2023
Mack 2020 Granite Trucks: Low Turn Signal Visibility Risk
Mack recalls certain 2015-2023 Granite trucks with potential turn signal misalignment, risking crashes due to reduced visibility. Owners receive free repairs.
“Mack 2020 Granite Trucks: Low Turn Signal Visibility Risk.” GovInfoNow, updated August 18, 2026. https://govinfonow.com/recall/79861-mack-2020-granite-trucks-low-turn-signal-visibility-risk. Based on NHTSA recall #23V600000 (https://www.nhtsa.gov/recalls?nhtsaId=23V600000).
NHTSA announced on August 25, 2023, that Mack Trucks is recalling certain 2015-2023 Mack Granite (GU and GR) vehicles due to low turn signal visibility. Dealers will add additional turn signal lighting free of charge to remedy the defect.
How to tell if you have it
Mack Granite (GR), 2015-2023
Mack Granite (GU), 2015-2023
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.
The hazard
The turn signals may be positioned incorrectly, reducing their visibility and failing to comply with Federal Motor Vehicle Safety Standard number 108. Low turn signal visibility may not alert other drivers to a turning vehicle, increasing the risk of a crash.
Context
GovInfoNow's records show Mack Trucks, Inc. has 74 other recalls on record since July 9, 2010. Recent similar recalls include the Volvo VNL (April 1, 2026), Winnebago Adventurer (March 23, 2026), and Rivian R1T (August 6, 2026). NHTSA has received 34 technical service bulletins for the 2015 Mack Granite (GR) and 237 for the 2018 model year.
How to tell if you have this one
Check if your truck is a 2015-2023 Mack Granite (GR) model. The recall covers vehicles that don't meet Federal Motor Vehicle Safety Standard 108 for turn signal visibility.
Brand
Mack
Category
Vehicle
Based on the official NHTSA remedy
What to do — step by step
Contact Mack Customer Service
Call 1-800-866-1177 to get your free turn signal repair.
Get Turn Signal Repair
Dealers will add additional turn signal lighting at no cost to fix the visibility issue.
Official remedy
What NHTSA says 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.
How this recall unfolded
Recall timeline
Owners were mailed letters 13 months after NHTSA received the defect report.
1NHTSA received the defect report
2Owner letters mailed
Dates from the agency record only; steps without a date are left out.
Subject: Recall 23V600000 — Mack 2020 Granite Trucks: Low Turn Signal Visibility Risk
Hello,
I own a Mack 2020 Granite Trucks: Low Turn Signal Visibility Risk that is covered by recall 23V600000 from Mack.
The official recall notice states: 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.
I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this?
Thank you.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official NHTSA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
Plain-language summary written by qwen3:4b on August 18, 2026, from the official record above. Not reviewed by a person — if it conflicts with the NHTSA notice, the notice is correct. Report an error on this page.
GovInfoNow is an independent service and is not a government agency. We republish official NHTSA recall data; we don’t issue, amend or administer recalls.