Service bulletin SF599
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10174984 |
| Published by NHTSA | 2020-05-14 |
| Manufacturer's number | SF599 |
| Manufacturer's date | 2020-05-13 |
| NHTSA component | ENGINE AND ENGINE COOLING; POWER TRAIN |
NHTSA's summary
Field Service Campaign for Allison Transmission Flex Plate Bolts. On certain vehicles with DD13 engines, incorrect bolts were installed in the flex plate. The flex plate bolts will be replaced.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Engine, Transmission and driveline
| FREIGHTLINER 114SD | 2020 |
|---|---|
| FREIGHTLINER 122SD | 2020 |
| FREIGHTLINER BUSINESS CLASS M2 | 2020 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 2020408 | 2020-09-01. Engine |
|---|---|
| 20V527000 | 2020-09-01. ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| FleetCom_Oil Plug Loc | 2026-01-08. Other. Fleet Communications for NFD Lower Oil Plug Location - SP Axles |
|---|---|
| FleetCom_Heater Core | 2026-01-08. Other. Fleet Communications for Heater Core Plugging |
| CXA_10_25_Conmet Oil Pan | 2025-11-05. Other. CX Advocate for ConMet Oil Pan Insert Additional Issues |
| CXA 3_25_NOx | 2025-04-02. Other. CX Advocate for NOx conversion low faults |
| CXA 2_25_Turbo Oil Drain | 2025-03-04. Other. CX Advocate for turbo oil drain cracking |
| CXA 2_25_NOx | 2025-03-04. Other. CX Advocate for NOx conversion low faults |
| CXA 1_16_Turbo Oil Drain | 2025-01-29. Other. CX Advocate for turbo oil drain cracking |
| CXA 1_16_NOx | 2025-01-29. Other. CX Advocate for NOx conversion low faults |
| CXA 1_16_DD13 Altitude | 2025-01-29. Other. CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault. |
| CXA 1_16_CARB Truck Chec | 2025-01-29. Other. CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check. |