Recall 10V537 affects 21 2011 Mack Pinnacle (Cxu) and Pinnacle (Chu) trucks missing rear conspicuity treatment. Repair is free at any franchised Mack dealer.
Mack is recalling 21 2011 Pinnacle (Cxu) and Pinnacle (Chu) heavy trucks because rear mud flap hanger brackets were omitted, leaving required rear reflector treatment off the truck or out of the approved alternate position. Reduced rear visibility increases crash risk, and the Mack dealer repair will be free once available.
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What's wrong?
The rear mud flap hanger brackets on 2011 Mack Pinnacle (Cxu) and Pinnacle (Chu) trucks are metal supports at the back of the truck that hold the rear mud flaps in place. Those brackets also serve as a mounting point for rear conspicuity treatment, which means reflective tape or markings that help other drivers see the back of the truck in low light.
In campaign 10V537, the affected trucks were built without the rear mud flap hanger brackets. When those brackets were missing, the rear reflective treatment was not installed in another required location. That leaves the truck short of the visibility equipment required by Federal Motor Vehicle Safety Standard No. 108.
There is no warning sign before failure. This issue is built into the truck, so an owner would notice it only by inspecting the rear mud flap area and the rear reflective markings.
Who's affected?
Covers both listed Pinnacle configurations, with the visibility component common to each.
| 2011 Mack Pinnacle (Cxu) | visibility component |
|---|---|
| 2011 Mack Pinnacle (Chu) | visibility component |
| Units affected | 21 |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific truck.
What's the safety risk?
Missing or incomplete reflectors reduce how well other drivers see the vehicle, especially in low light, and increase the risk of a crash. Schedule the recall work soon, and keep lights and existing reflective markings clean until the inspection is done. Repair will be free at any franchised Mack dealer once available.
What should I do?
- Check your VIN to confirm your 2011 Mack Pinnacle (Cxu) or Pinnacle (Chu) is included in this recall.
- Contact Mack customer service at 1-800-866-1177 if you have not received a notice, and reference recall number 10V537.
- Ask a franchised Mack dealer whether the free rear conspicuity-treatment inspection is open for your VIN.
- Schedule the inspection and reflector treatment that restores rear visibility if the dealer confirms your truck needs it.
- Bring the recall notice if Mack mailed one, and bring your registration to the appointment.
- Drive with extra space around the truck at night until the rear reflector treatment is complete.
What happens at the repair
Mack reported that this safety recall began on February 2, 2011. At the dealer, a Mack technician inspects the rear visibility marking on the 2011 Pinnacle (Cxu) or Pinnacle (Chu) and installs conspicuity treatment where required. The dealer repair will be free once available for your VIN. Ask the Mack service desk to confirm availability before bringing the truck in, and use Mack's recall contact line at 1-800-866-1177 if the dealer needs campaign details.
Timeline
| October 27, 2010 | NHTSA published the recall |
|---|---|
| February 2, 2011 | Owner notification mailed |
Frequently asked questions
What is recall 10V537?
Recall 10V537 covers 21 2011 Mack Pinnacle (Cxu) and Pinnacle (Chu) heavy trucks built without rear mud flap hanger brackets. The missing brackets left the rear conspicuity treatment, the reflective visibility marking, off these vehicles, which reduces rear visibility and increases crash risk. Mack dealers inspect and install the required treatment for free.
What should I do if my 2011 Mack Pinnacle (Cxu) or Pinnacle (Chu) is on this recall?
Check your VIN to confirm your specific truck is included in recall 10V537. If it is, contact a franchised Mack dealer to schedule the inspection and required conspicuity treatment installation. Reference recall number 10V537 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Mack dealers will inspect the truck and install the required rear conspicuity treatment free of charge at a franchised Mack dealer.
What is the safety risk?
The safety risk is reduced rear visibility. These trucks were built without rear mud flap hanger brackets, and the required rear reflective visibility treatment was not installed elsewhere. A less visible heavy truck has an increased crash risk, especially when seen from behind.
What if I bought my Mack Pinnacle used?
The free repair still applies. Federal recall law requires the manufacturer to honor the recall regardless of ownership history. Check your VIN to confirm whether your specific Mack Pinnacle is included, then contact a franchised Mack dealer or call Mack at 1-800-866-1177.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/10V537000 |
|---|---|
| Mack customer service | 1-800-866-1177 |
| NHTSA recall # | 10V537 |
| NHTSA recall # (full) | 10V537000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Owner Notification Letter (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 3, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →