# Service bulletin 21NA289

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: 10207925
- Published by NHTSA: 2022\-02\-14
- Manufacturer's number: 21NA289
- Manufacturer's date: 2021\-12\-15
- NHTSA component: ELECTRICAL SYSTEM:IGNITION:COIL:SPARK PLUGS

## NHTSA's summary

This technical bulletin provides a procedure to inspect the ceramic portion of the sparkplug for cracking and to replace if found the cause of the customers concern.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10207925-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10207925-9999.pdf)

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

## Components

Electrical system, Ignition, Spark plugs

## Vehicles listed

- 2021 CHEVROLET EQUINOX
- 2021 GMC TERRAIN

## Other bulletins for the same vehicles and component

- [PIC5650K](/bulletins/10237659.md), 2023-06-13, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM:IGNITION. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.
- [22\-NA\-107](/bulletins/10217070.md), 2022-08-03, Service bulletin: ELECTRICAL SYSTEM:IGNITION; POWER TRAIN. This service bulletin provides repair information to correct a customer concern of a Service AWD Message in DIC at Ignition On with DTC C056D Set.
- [21NA255](/bulletins/10205575.md), 2021-12-27, Service bulletin: ELECTRICAL SYSTEM:IGNITION:COIL:SPARK PLUGS; ENGINE. This service bulletin provides repair information to correct a customer concern of an Engine Misfire, Malfunction Indicator Lamp \(MIL\) Illuminated \- DTC P0300 Set.
- [PIP5657D](/bulletins/10201263.md), 2021-09-13, Service bulletin: ELECTRICAL SYSTEM:IGNITION:COIL:HIGH TENSION/SPARK PLUG WIRES. This Preliminary information communicates the possibility of a misfire occuring due to a broken center insulator on the spark plug.
- [21NA068](/bulletins/10192034.md), 2021-05-10, Service bulletin: ELECTRICAL SYSTEM:IGNITION:ANTI\-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2021 and newer model year vehicles with RPO ATH \(U.S. Only\).
- [21NA061](/bulletins/10192031.md), 2021-05-10, Service bulletin: ELECTRICAL SYSTEM:IGNITION:ANTI\-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. This service bulletin provides information for dealers on Using EL\-52545 When Diagnosing PEPs Transmitter Key Fobs \(North America ONLY\).

JSON: [/v1/bulletins/10207925](/v1/bulletins/10207925)

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