# Service bulletin 11\-002\-21

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.

- Type: Service bulletin
- NHTSA id: 10218571
- Published by NHTSA: 2022\-08\-22
- Manufacturer's number: 11\-002\-21
- Manufacturer's date: 2021\-08\-12
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; STRUCTURE

## NHTSA's summary

Incorrect Exhaust Body Heat Shields This bulletin involves inspecting the front right, left and mid muffler center exhaust heat shields underneath the vehicle for rivets and possibly replacing the heat shields if no rivets are found. Some vehicles were built with incorrect exhaust body heat shields that did not have rivets.There will not be a customer symptom/condition for this issue.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10218571-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10218571-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Body and frame, Engine, Exhaust and emissions

## Vehicles listed

- 2021 JEEP GRAND CHEROKEE

## Recalls for the same vehicles and component

- [2022217](/recalls/tc/2022217.md), 2022-04-28: Engine
- [22V284000](/recalls/nhtsa/22V284000.md), 2022-04-28: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\)

## Other bulletins for the same vehicles and component

- [114721](/bulletins/11037592.md), 2026-09-30, Service bulletin: STRUCTURE:BODY. APPLIQUE \- FRONT DOOR
- [9100905](/bulletins/11037350.md), 2026-09-17, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [9100902](/bulletins/11037345.md), 2026-09-17, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
- [9100859](/bulletins/11035072.md), 2026-07-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Before replacing any part, check the DOT on the glass or the PN to make sure you choose the replacement part from the correct supplier: DOT 615 \- 6NC10TRMAH \- CIE Supplier DOT 1038 \- 6NC07TRMAR \- CIE Supplier DOT 1065 \- 7TF32TRMAB, 7TF33TRMAB \- HCMF Supplier
- [112639](/bulletins/11034912.md), 2026-07-08, Service bulletin: ENGINE. THROTTLE BODY – NONE
- [112640](/bulletins/11034911.md), 2026-07-08, Service bulletin: ENGINE. THROTTLE BODY – NONE
- [S2208000045 REV.D](/bulletins/11034385.md), 2026-07-02, Service bulletin: STRUCTURE:BODY. Backup Camera Poor Image Quality Inspection
- [S2623000041 REV.A](/bulletins/11034351.md), 2026-07-02, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Power Liftgate Intermittently Inoperative. Will Not Open/ Close. Liftgate/Hatch Ajar Message Displayed. Rev A
- [112842](/bulletins/11034335.md), 2026-07-02, Service bulletin: ENGINE. BOLT \- HEX FLANGE HEAD
- [S1623000028 Rev. K](/bulletins/11033975.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.

JSON: [/v1/bulletins/10218571](/v1/bulletins/10218571)

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