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Service bulletin 75227

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10212436
Published by NHTSA2022-05-31
Manufacturer's number75227
Manufacturer's date2021-06-21
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE AND ENGINE COOLING

NHTSA's summary

MUFFLER AND TAILPIPE ? EXHAUST

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Exhaust and emissions, Exhaust manifold, pipes and muffler

Vehicles listed
ALFA ROMEO GIULIA2021
ALFA ROMEO STELVIO2021
CHRYSLER 3002021
CHRYSLER 300 AWD2021 (the catalog's model; the bulletin names a series or trim of it)
CHRYSLER PACIFICA2021
CHRYSLER VOYAGER2021
DODGE CHALLENGER2021
DODGE CHARGER2021
DODGE DURANGO2021
FIAT 500X2021
JEEP CHEROKEE2021
JEEP COMPASS2021
JEEP GLADIATOR2021
JEEP GRAND CHEROKEE2021
JEEP GRAND WAGONEER2021
JEEP RENEGADE2021
JEEP WRANGLER2021
JEEP WRANGLER 4XE2021 (the catalog's model; the bulletin names a series or trim of it)
RAM 15002021
RAM 25002021
RAM 35002021
RAM 45002021
RAM 55002021
RAM PROMASTER2021
RAM PROMASTER CITY2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
11-003-212022-08-22. Service bulletin. Flutter or Rattle Noise From Under the Vehicle - Exhaust Body Heat Shields This bulletin involves replacing all four exhaust heat shields specified in this bulletin. The customer may describe a rattle from underneath the vehicle.
11001212022-05-31. Service bulletin. Exhaust Tips Are Loose And Off Center This bulletin involves inspecting the exhaust tips for not being centered. Properly torquing the exhaust clamp. Customers may notice the exhaust tips are not centered in the bumper opening and loose.