TSB S1821000001 — Dodge and Jeep Service bulletin
S1821000001 is a service bulletin on file with NHTSA for 2 Dodge and Jeep models, 2012 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Gear Ratio DTC?s, Transmission Shift Concerns, Does Not Shift At Times, Shudders
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years S1821000001 names
| Vehicle | Model years |
|---|---|
| Dodge Caliber | 2012 |
| Jeep Liberty | 2012 |
Every document filed under S1821000001
| Document ID | Filed | Type |
|---|---|---|
| S1821000001 | April 16, 2021 | Service bulletin |
What S1821000001 covers
Transmission & drivetrain — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB S1821000001?
S1821000001 is a service bulletin filed with NHTSA by Dodge and Jeep, covering 2 Dodge and Jeep models across the 2012 model years. NHTSA's summary reads: Gear Ratio DTC?s, Transmission Shift Concerns, Does Not Shift At Times, Shudders
Which vehicles does S1821000001 cover?
NHTSA's file names Dodge Caliber (2012); Jeep Liberty (2012). 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 S1821000001 a recall, and is the repair free?
No. S1821000001 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 S1821000001?
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 S1821000001, its date, and NHTSA's own summary from the public file.
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 S1821000001. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.