Rattle Type Noise Heard Coming from Engine/Transmission Area or from Front of Vehicle When Engine is Running or Vehicle is in Motion and Making Turns – 2019-2022 Buick Cadillac Chevrolet GMC

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NHTSA ID Number: 10205595

Manufacturer Communication Number: 21NA279

 

Summary

This service bulletin provides a procedure to replace the starter if found the cause of the rattle noise.

 

 


25 Affected Products

Vehicles

MAKE MODEL YEAR
BUICK ENVISION 2021-2022
CADILLAC CT4 2020-2022
CADILLAC CT5 2020-2022
CADILLAC XT4 2019-2022
CADILLAC XT5 2020-2022
CADILLAC XT6 2020-2022
CHEVROLET BLAZER 2019-2022
GMC ACADIA 2020-2022

 


Condition

Some customers may comment that a rattle type noise can be heard coming from the engine/transmission area or from the front of vehicle when the engine is running or the vehicle is in motion and making turns.

 

Cause

The cause of this condition may be that the starter pinion gear may be loose and making contact with the flywheel.

 

Correction

Note: To duplicate this noise, drive the vehicle at low speed and make right hand turns. The rattle develops from the starter drive gear sliding down the starter motor shaft and contacting the ring gear.

Inspect and, if necessary, replace the starter.

⇒ If you are able to duplicate the noise, remove the starter motor per the SI procedure and inspect the drive pinion gear. Hold the starter level and tip the nose down. If the gear slides down the motor shaft, replace the starter.

 

Service Procedure

Refer to Starter Replacement in SI.

 



1 Associated Document

Manufacturer Communications

Bulletin No.: 21-NA-279
Date: December, 2021

https://www.nhtsa.gov/recalls?nhtsaId=10205595

MC-10205595-9999.pdf 504.006KB

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“This site contains affiliate links for which OEMDTC may be compensated”
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  • Condition: New; Unit Type: PMGR; Unit Series: PG260L Series; Voltage: 12V; kW: 1.6; Rotation: CW; Tooth Count: 11; Mounting Hardware Included: No; Unit Finish: Same as OE; Number of Pieces: 1; Country of Origin: CN
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  • Condition: New; Unit Type: PMGR; Unit Series: PG260L Series; Voltage: 12V; kW: 1.6; Rotation: CW; Tooth Count: 11; Mounting Hardware Included: No; Unit Finish: Same as OE; Number of Pieces: 1; Country of Origin: CN
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