Service bulletins for the 2023 Chevrolet Express
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.
382 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
Only bulletins with component: Automatic transmission are shown. Show all
| 17-NA-066 | 2023-07-25. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test. |
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| 16-NA-130 | 2023-03-08. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY. This service bulletin provides information for after installation of a replacement upper valve body, the transmission may have no Reverse and no 2nd gear. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.