2020 Peterbilt 579 Transmission and drivetrain Problems
- Complaints
- 2about this part
- Share
- 40%of 5 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the transmission and drivetrain of the 2020 Peterbilt 579, 40% of the 5 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Camshaft failure as described in previous service bulletins for same year, make, model truck and Paccar MX-17 engine. Available for inspection as truck is not operational. Vehicle has been inspected by mechanic and no warning, messages, or other symptoms prior to the failure being noticed and inspected to locate issue.”
NHTSA complaint #11730456, filed 2026-04Related service bulletins
- 11022496Aug 20, 2025Condition, 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…
- 11019217May 22, 2025T016: 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…
- 11009757Oct 22, 20247/700 Service Agreement - Letter Only.
- 10243360Sep 1, 2023Certain 579 MLU chassis equipped with Cummins X15 engines have fan hub bracket hardware that are incorrect for the application and/or under torqued and could become loose and/or…
- 10206097Dec 2, 2021Non-Safety Campaign: âDrivers of vehicles equipped with PACCAR TX-12 transmissions may experience harsh shifts and gear grinding noise. Premature Main Drive Gear damage may…
- 10206084Dec 2, 2021Non-Safety Campaign:Â Eaton Endurant transmissions may experience premature Main Drive Gear damage due to clutch housing and main case countershaft bearing bore wear. A Clutch…
- 10201946Sep 7, 2021âSafety Recall â Hill Start Assist (HSA) Valve Clearance â NHTSA ID: 21V-648, TC: 2021-521. Crossmember mounted Hill Start Assist valve may not have sufficient clearance…
- 10185187Dec 23, 2020Fix-As-Fail - Prior versions of PACCAR transmission software may be prone to setting Linear Clutch Actuator (LCA) fault codes leading to possible LCA hardware replacement.
- 10185190Dec 18, 2020Fix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator (LCA) fault codes leading to possible LCA hardware replacement.
- 10185189Dec 18, 2020Non-safety campaign: Vehicles equipped with an Eaton Endurant 12 speed transmission may experience transmission service lamp activation, no gear engagement from neutral, and/or…
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 4 | 57% |
| 2020 | 2 | 40% |
Other parts of the 2020 Peterbilt 579
2 complaintsBrakes
1 complaintsElectronic stability control
1 complaintsEngine
1 complaintsForward collision avoidance
1 complaints
← All problems reported for the 2020 Peterbilt 579
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology