STAR 2025–2026 Ram 1500 Tech — S2621000004

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STAR case · STAR case S2621000004

This is a STAR case, not a recall. STAR cases are technical guidance Ram gives dealers for diagnosing a known condition. They are not repair orders, and they don't by themselves change what is covered.

Published: Sep 30, 2026
Applies to: Ram 1500 (2025–2026 model years)

Also listed in the source (outside this forum's coverage): 1500 2018–2024

Summary (official text)​

The Customer May Complain About a Popping Noise, Grinding Noise, or an Intermittent No Reverse or Forward Transmission Engagement. The Tech May Find Damaged and/or Worn Transmission Output Shaft Splines (850RE Transmission Only)

Sources​

• S2621000004 (PDF, NHTSA document 11038329) — Sep 30, 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.