TSB 2026 Ram 1500 Electronic Shift Module (ESM) Updates — 08-308-26

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Technical Service Bulletin · TSB 08-308-26

This is a Technical Service Bulletin, not a recall. A TSB tells dealers how to diagnose and repair a specific symptom when a truck comes in with it. It doesn't mean every truck listed has the problem, and it doesn't by itself make the repair free -- coverage depends on your warranty and the dealer's diagnosis.

Published: Aug 6, 2026
Applies to: Ram 1500 (2026 model year)

Summary (official text)​

Flash: Electronic Shift Module (ESM) Updates Customers may comment on one or more of the following: SYMPTOM: ● Shifter is unresponsive. ● Unable to start the vehicle. ● “Service Shifter” message displayed in the Instrument Panel Cluster (IPC). This bulletin involves inspecting and possibly reprogramming the ESM with the latest available software.

Sources​

• 08-308-26 (PDF, NHTSA document 11036154) — Aug 6, 2026

Details from NHTSA as of Oct 12, 2026. If NHTSA or Ram revises this notice, this post is updated and significant changes are noted in a reply. The linked documents are the authority, and a dealer can confirm whether it applies to your VIN.

Have you experienced this issue with your truck? Let us know your model year and engine, plus any diagnosis or repair details.