TSB 04156 — Ford Service bulletin

04156 is a service bulletin on file with NHTSA for the Ford Mustang, 2001–2003 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. TR3650 MANUAL TRANSMISSION - JUMPS OUT OF GEAR 2ND AND/OR 3RD - CLASH NOISE AND/OR RASPY FEEL ON GEAR ENGAGEMENT.

NHTSA's own summary of the document, quoted from the public manufacturer-communications file.

1Document filed
1Vehicle named
3Model years

Vehicles and model years 04156 names

VehicleModel years
Ford Mustang 2001, 2002, 2003

Every document filed under 04156

Document IDFiledType
04156 August 9, 2004 Service bulletin

What 04156 covers

Transmission & drivetrain — the component vocabulary NHTSA files this communication under.

← All Ford Mustang TSB years TSB lookup by model

Questions buyers ask

What is TSB 04156?

04156 is a service bulletin filed with NHTSA by Ford, covering the Ford Mustang across the 2001–2003 model years. NHTSA's summary reads: TR3650 MANUAL TRANSMISSION - JUMPS OUT OF GEAR 2ND AND/OR 3RD - CLASH NOISE AND/OR RASPY FEEL ON GEAR ENGAGEMENT.

Which vehicles does 04156 cover?

NHTSA's file names Ford Mustang (2001–2003). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.

Is TSB 04156 a recall, and is the repair free?

No. 04156 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.

How do I get the full text of 04156?

Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 04156, its date, and NHTSA's own summary from the public file.

Data updated 2026-08-20 from NHTSA's public records

Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 04156. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.