TSB 2020–2022 Super Duty Power Train — 26-2088

[Ford Tremor Forum]

Technical Service Bulletin · TSB 26-2088

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: Mar 5, 2026
Applies to: F-250, F-350 (2020–2022 model years)

Also listed in the source (outside this forum's coverage): F-450 SD 2020–2022, F-550 SD 2020–2022

Summary (official text)​

This bulletin supersedes 24-2249. Reason for update: update the claim quantity of the torque converter nuts, part number and claim quantity of the front support assembly bolt washers, and part number change of the fluid pan from the Parts List. Reissued 01-Oct-2026 - Added LC3Z-7G091-B to the part list

Supersedes: TSB 24-2249

Sources​

• TSB 26-2088 (PDF, NHTSA document 11029923) — Mar 5, 2026
• TSB 26-2088 v2 (PDF, NHTSA document 11037979) — Oct 1, 2026

Details from NHTSA as of Oct 7, 2026. If NHTSA or Ford 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.