Not Yet Classified

This recall has not yet been classified by risk level.

2020 PETERBILT 520 Recalled by PACCAR Incorporated — ELECTRONIC STABILITY CONTROL (ESC)

Date: November 25, 2020
Company: PACCAR Incorporated
Status: Ongoing
Source: NHTSA

What You Should Do

Stop using this product immediately. Do not consume, use, or distribute it.

PACCAR will notify owners, and dealers will inspect the suspect chassis and correct the brake relay plumbing if needed, free of charge. PACCAR has issued owners an interim notification on January 4, 2020. Owner notification letters were mailed on January 25, 2021. Owners may contact Peterbilt customer service at 1-940-591-4220. PACCAR's number for this recall is 20PBF.

Affected Products

2020 PETERBILT 520. PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The stability control brake relay may have the Spring Brake Modulating (SBM) Valve or the lift axle hose incorrectly connected.

Why Was This Recalled?

A stability control event meant to only actuate the ABS controlled wheel ends could actuate lift axle brakes or modulate park brake chambers and could possibly de-stabilize the vehicle, increasing the risk of a crash.

Where Was This Sold?

Nationwide

About PACCAR Incorporated

PACCAR Incorporated has 99 total recalls tracked by RecallDetector.

Related Recalls

Data sourced from the NHTSA. Last updated March 27, 2026. View original report