No complaints are listed for the 2020 Peterbilt 388. NHTSA's API and bulk file list none in this build.
Data build 2026-10-07.
NHTSA lists this vehicle as PETERBILT 388.
Complaints per 100k sold unavailable. No sales source is available for this record.
Model-generated complaint tags: No complaints are listed for tagging.
0 recalls.
0 investigations; 0 open.
19 manufacturer communications.
| System | Count |
|---|---|
| EQUIPMENT | 6 |
| ELECTRICAL SYSTEM | 3 |
| ENGINE AND ENGINE COOLING | 3 |
| EQUIPMENT ADAPTIVE/MOBILITY | 3 |
| STRUCTURE | 3 |
| ENGINE | 2 |
| POWER TRAIN | 2 |
| SERVICE BRAKES | 2 |
Date: 2026-09-11. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
"Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
Date: 2024-11-22. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting issues. A new Starter Troubleshooting Guide has been created to provide a comprehensive list of starting system checks, which should reduce unnecessary starter replacements and associated warran
Date: 2024-11-11. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
Fix-As-Fail The window switch fails prematurely due to excessive amperage flowing through the window switch circuit. A new door harness design has been developed to prevent failures. Fix-As-Fail start date is 11/11/2024.
Date: 2022-10-18. Type: Service Bulletin/Repair Instructions. Systems: 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 cs hardware to deliver secure software updates remotely. This
Date: 2022-08-03. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES.
The service information for Bendix Air Dryer maintenance is being updated to include new procedures.
Date: 2022-02-04. Type: Service Bulletin/Repair Instructions. Systems: 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 antennas as a primary antenna may experience this degradation.
Date: 2021-09-21. Type: Service Bulletin/Repair Instructions. Systems: FUEL SYSTEM, DIESEL.
Fix-As-Fail A?A 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 vehicle to continue operation with a failed DEF sensor by di
Date: 2021-02-10. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT, EQUIPMENT ADAPTIVE/MOBILITY, VISIBILITY.
Information Only A?A A Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
Date: 2020-10-01. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT, EQUIPMENT ADAPTIVE/MOBILITY, 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 fail near the bottom of the frame rail.
Date: 2020-09-25. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT, STRUCTURE.
Information only: In 2020, Peterbilt and Kenworth began using the same M10, M12, M16, and M20 frame fasteners on all vehicles. Torque specifications for these fasteners are different from previous fasteners.
None listed.
| NHTSA model label | Complaints |
|---|---|
| 388 | 0 |
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