2019 Peterbilt 579: common problems
The maker issued 65 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 65
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 22 |
| Engine and cooling | 0 | 0 | 12 |
| Equipment | 0 | 0 | 12 |
| Engine | 0 | 0 | 10 |
| Powertrain | 0 | 0 | 10 |
| Structure | 0 | 0 | 7 |
| Service brakes | 0 | 0 | 6 |
| Fuel system | 0 | 0 | 3 |
| Visibility | 0 | 0 | 3 |
| Exterior lighting | 0 | 0 | 2 |
| Suspension | 0 | 0 | 2 |
| Fuel/propulsion system | 0 | 0 | 1 |
| Other | 0 | 0 | 1 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- "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…
- An exhaust manifold slip joint seal kit is now available for EPA 2017-2024 PACCAR MX-13 engines
- 105 chassis have been removed from the chassis list and unflagged in PRWS due to expiration of applicable…
105 chassis have been removed from the chassis list and unflagged in PRWS due to expiration of applicable warranty coverage. Total chassis population is 732.
- The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to…
The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the latest prognostics bulletin verbiage.
- Troubleshooting procedures for 2.1m cab power windows are now available
- The attached procedures document has been updated with more detail and explanations
This is not a stand-alone procedure. Cummins Quickserve troubleshooting will specify the use of these procedures while troubleshooting specific fault codes.
- KW & PB DEF Quality Sensor part number Q21-6127-001 for PACCAR PX-7 and Cummins X15 engines has been added…
KW & PB DEF Quality Sensor part number Q21-6127-001 for PACCAR PX-7 and Cummins X15 engines has been added to this warranty policy.
- Bogie Crossmember Torque Value Update - Procedure has been updated to correct torque values
- EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24…
- Procedure pictures updated for clarity
When troubleshooting Cummins X15 fault codes 555 or 556, follow this additional testing, inspection, and documentation procedure to help identify the root cause of dusted engines. This is not a stand-alone process but…
- Condition, Chassis Affected, and Warranty sections updated with the following verbiage “E311 must be…
Condition, Chassis Affected, and Warranty sections updated with the following verbiage “E311 must be flagged and open in Service Information Record (SIR) at the time of RO open date to qualify.” Also, “Through Standard…
- T016
Warranty section updated to include 0.5 hours for test drive. Recommended Repair T016C has been updated from 6.4 hours to 6.9 hours. SRT codes updated in PRWS Claim Coding Table: B25-17A for 6.9 hours created to…
NHTSA lists 65 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2019 Peterbilt 579?
There are no owner complaints in the NHTSA data for this year; the data comes from 65 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2019 Peterbilt 579?
NHTSA lists 65 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2019 Peterbilt 579 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2019 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.