Service bulletins for the 2020 Freightliner Columbia
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
26 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Electrical system are shown. Show all
| SS1033638 | 2021-06-09. Service bulletin. ELECTRICAL SYSTEM. SS 1033638 - Power Window Express Down Module Discontinued |
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| SB54-327 | 2020-04-17. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM. Service Bulletin for Lengthening the Backup Light Harness. Though the backup light harness is long enough to connect to the backup light switch, it may be short enough that the wire seals in the connector can be stressed. Moisture entering through the seals can cause corrosion, resulting in a bad connection and/or failure of the switch. As a result, backup lights and, if equipped, the backup alarm, may not function when the vehicle is shifted into reverse. |
| 20CSA-03 | 2020-03-06. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Customer Service Announcement saying that Service Pack (SP) 2 for Diagnostic Link 8.11 Standard and Professional will be available for download from the Detroit Diesel server. |
| 20CSA-02 | 2020-02-01. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Customer Service Announcement reminding service locations to update their DiagnosticLink software. To maintain access to the Detroit server, all DiagnosticLink computers must be updated with the current version of DiagnosticLink software. all DiagnosticLink 8.08 installed versions will be disabled as of Tuesday, January 28, 2020. |
| SB54-290 | 2020-01-17. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin on guidelines for repairing or replacing an electrical harness. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.