TSB RCL-557 — Jeep Service bulletin

RCL-557 is a service bulletin on file with NHTSA for 2 Jeep models, 1990 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. IT HAS BEEN DETERMINED THAT THE 1990 JEEP VEHICLE, EQUIPPED WITH THE 2.5L ENGINE, MAY BE IN VIOLATION OF FEDERAL EMISSIONS STANDARDS. HYDROCARBON, CARBON MONOXIDE AND OXIDES OF NITROGEN LEVELS COULD BE ABOVE ALLOWABLE LIMITS, WHICH WERE ESTABLISHED TO PROTECT THE PUBLIC HEALTH…

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

1Document filed
2Vehicles named
1Model year

Vehicles and model years RCL-557 names

VehicleModel years
Jeep Cherokee 1990
Jeep Wrangler 1990

Every document filed under RCL-557

Document IDFiledType
RCL/557 December 1, 1994 Service bulletin

What RCL-557 covers

Engine — the component vocabulary NHTSA files this communication under.

← All Jeep Cherokee TSB years TSB lookup by model

Questions buyers ask

What is TSB RCL-557?

RCL-557 is a service bulletin filed with NHTSA by Jeep, covering 2 Jeep models across the 1990 model years. NHTSA's summary reads: IT HAS BEEN DETERMINED THAT THE 1990 JEEP VEHICLE, EQUIPPED WITH THE 2.5L ENGINE, MAY BE IN VIOLATION OF FEDERAL EMISSIONS STANDARDS. HYDROCARBON, CARBON MONOXIDE AND OXIDES OF NITROGEN LEVELS COULD BE ABOVE ALLOWABLE LIMITS, WHICH WERE ESTABLISHED TO PROTECT THE PUBLIC HEALTH…

Which vehicles does RCL-557 cover?

NHTSA's file names Jeep Cherokee (1990); Jeep Wrangler (1990). 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 RCL-557 a recall, and is the repair free?

No. RCL-557 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 RCL-557?

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 RCL-557, 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 RCL-557. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.