2021 PETERBILT 337
2 recalls, 0 complaints - 25 TSBs
24V915000 Dec 9, 2024
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
Defect Description
PACCAR Incorporated (PACCAR) is recalling certain 2021-2025 Peterbilt and Kenworth vehicles, equipped with Bendix EC80 Advanced Electronic Control Units (ECU). Please see the recall report for a complete list of models. Electrical noise and low signal to the power line carrier may cause the ECU to... Read more
Consequence
Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System) may not function properly or at all, increasing the risk of a crash.
Remedy
Dealers will reprogram the ECU software, free of charge. Owner notification letters were mailed February 3, 2025. Owners may contact Kenworth's customer service at 1-425-828-5888 and Peterbilt's customer service at 1-940-591-4220. PACCAR's numbers for this recall are 24KWL and 24PBL.
21V391000 May 26, 2021
FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM:FUEL RAIL
Defect Description
PACCAR Incorporated (PACCAR) is recalling certain 2018-2021 Peterbilt 337, 348, 365, 367, 520, 567, Kenworth T270, T370, T440, T470, T800 and T880 vehicles. The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.
Consequence
A fuel leak in the presence of an ignition source increases the risk of a fire.
Remedy
Dealers will inspect the rail threads and fuel lines, and replace the rail as necessary, free of charge. Owners may contact PACCAR customer service at 1-425-828-5888 (Kenworth) or 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 21KWC and 21PBD.
No complaints found for this vehicle.
Technical Service Bulletins, 2021 PETERBILT 337
25 manufacturer communications from 16 unique bulletins. TSBs describe known problems and recommended fixes from the manufacturer.
Most Affected Components
| Component | Bulletins |
|---|---|
| 350000 EQUIPMENT | 5 |
| 356000 EQUIPMENT ADAPTIVE/MOBILITY | 3 |
| 160000 STRUCTURE | 2 |
| 040000 SERVICE BRAKES, AIR | 2 |
| 060000 ENGINE AND ENGINE COOLING | 2 |
| 063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM | 1 |
| 110000 ELECTRICAL SYSTEM | 1 |
| 130000 VISIBILITY | 1 |
45-064
Oct 18, 2022
060000 ENGINE AND ENGINE COOLING
Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the existing Remote Diagnostic c
14-043
Sep 9, 2022
020000 SUSPENSION
Fix-As-Fail On certain chassis with Low Air Leaf Suspension or Low-Low Air Leaf Suspension, the Height Control Valve (HCV) arm may be rubbing on other components when the bend in the arm is facing outboard. Flipping the bend in the HCV arm
13-060
Aug 3, 2022
030000 BRAKES (PWS)
The service information for Bendix Air Dryer maintenance is being updated to include new procedures.
13-057
Mar 3, 2022
356000 EQUIPMENT ADAPTIVE/MOBILITY
Fix-As-FailA a?? A hill start assist (HSA) valve plumbing revision eliminates ice buildup in the HSA valve exhaust in cold weather.A
13-057
Mar 3, 2022
350000 EQUIPMENT
Fix-As-FailA a?? A hill start assist (HSA) valve plumbing revision eliminates ice buildup in the HSA valve exhaust in cold weather.A
13-057
Mar 3, 2022
040000 SERVICE BRAKES, AIR
Fix-As-FailA a?? A hill start assist (HSA) valve plumbing revision eliminates ice buildup in the HSA valve exhaust in cold weather.A
13-057
Mar 3, 2022
030000 SERVICE BRAKES, HYDRAULIC
Fix-As-FailA a?? A hill start assist (HSA) valve plumbing revision eliminates ice buildup in the HSA valve exhaust in cold weather.A
51-013
Feb 4, 2022
350000 EQUIPMENT
Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G ant
E282
Dec 17, 2021
060000 ENGINE AND ENGINE COOLING
Information Only: Due to differences between the PACCAR MX-11 or MX-13 2021A and 2021B engines, technicians must be able to identify which of these engines are in a chassis.
13-058
Dec 14, 2021
251000 ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)
Non-Safety CampaignA a?? Certain model 337 and 348 medium duty chassis were built with the ABS module installed incorrectly
43-071
Sep 21, 2021
080000 FUEL SYSTEM, DIESEL
Fix-As-Fail a?? Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are available. As a temporary solution, after PACCAR confirms a DEF sensor is not available, a temporary software update will allow a veh
02-168
Sep 20, 2021
160000 STRUCTURE
Information Only - Rear axle Quarter Fenders with less than two inches of clearance between the top of the quarter fender and the bottom of the trailer/equipment are susceptible to damage. The lack of clearance could result in cracked/broke
21-PBD
Jun 22, 2021
070000 FUEL SYSTEM, GASOLINE
Safety Recall a?? Cummins Fuel Rail Leak a?? NHTSA ID: 21V391 / TC: 2021-323, Cummins Recall: C2423.A Cummins PX9 and ISX12 fuel rails may leak around a sealing washer, potentially resulting in fuel leaks.A Undetected prolonged diesel fuel
15-029
May 27, 2021
010000 STEERING
Information Only - Power steering reservoir cap may separate during removal when it is pulled upward instead of twisted.
02-160
Feb 10, 2021
356000 EQUIPMENT ADAPTIVE/MOBILITY
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
02-160
Feb 10, 2021
350000 EQUIPMENT
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
02-160
Feb 10, 2021
136000 VISIBILITY:WINDSHIELD WIPER/WASHER
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
02-160
Feb 10, 2021
130000 VISIBILITY
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
13-055
Oct 1, 2020
356000 EQUIPMENT ADAPTIVE/MOBILITY
Fix as Fail: Peterbilt has introduced an improved mounting bracket for low mount air tanks for vehicles built between January 01, 2017 and July 06, 2020. Torsional vibration may stress the currently-installed brackets and cause them to fai
13-055
Oct 1, 2020
350000 EQUIPMENT
Fix as Fail: Peterbilt has introduced an improved mounting bracket for low mount air tanks for vehicles built between January 01, 2017 and July 06, 2020. Torsional vibration may stress the currently-installed brackets and cause them to fai
13-055
Oct 1, 2020
040000 SERVICE BRAKES, AIR
Fix as Fail: Peterbilt has introduced an improved mounting bracket for low mount air tanks for vehicles built between January 01, 2017 and July 06, 2020. Torsional vibration may stress the currently-installed brackets and cause them to fai
43-067
Jun 10, 2020
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
Fix as Fail: For all conventional models, except 387/587, equipped with Side-of-Cab (a??SOCa??) exhaust and built from 03/6/2006 to 1/20/2020, the clamps that secure the SOC exhaust stacks may not be tightened properly. This may allow the
43-067
Jun 10, 2020
160000 STRUCTURE
Fix as Fail: For all conventional models, except 387/587, equipped with Side-of-Cab (a??SOCa??) exhaust and built from 03/6/2006 to 1/20/2020, the clamps that secure the SOC exhaust stacks may not be tightened properly. This may allow the
32-015
Jun 8, 2020
110000 ELECTRICAL SYSTEM
Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplet
116-1
Jul 13, 2016
350000 EQUIPMENT
SmartNav 2.0 Hardware retrofit for quality validation and vehicle validation units.
PETERBILT 337 - All Years Overview
Complete safety history for the PETERBILT 337 across all model years (2008, 2023).
66
Total Recalls
6
Total Complaints
0
Investigations
0
Reported Crashes
0
Reported Fires
0
Reported Deaths
PETERBILT 337 - Year by Year
Compare recalls and complaints across model years. Click any year to see full details.