Possible Tick or Rattle Noise Concern from Left and/or Right Side Rocker Cover – 2022 Cadillac Chevrolet GMC

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NHTSA ID Number: 10222798

Manufacturer Communication Number: 22-NA-060

Summary

This informational bulletin provides a procedure to install an isolator over the valve cover if found missing and corrects the customers concern.

 


Condition

Some customers may comment that they hear a tick or rattle type noise coming from the engine compartment

– This noise may be noticeable on the top of the engine near the left or right-side rocker cover area.

 

Cause

This condition may be caused by the left or right side rocker cover insulator.

– For a short period of time the insulator was manufactured without the fiberglass insulation (as indicated in the graphic below) that is used to reduce the normal engine valvetrain noise. This was due to an unavoidable supply shortage issue. Without this fiberglass insulation an increase in valvetrain noise on that bank may be noticeable.

 

Correction

If you encounter a vehicle with this condition and the noise is unacceptable to the customer, you can install a service cover which has the insulation attached to the insulator to help reduce the valvetrain noise.

 

Parts Information

RPO Description Part Number Qty
5.3L RPO (L84) 6.2L RPO (L87) INSULATOR, VLV RKR ARM CVR 12674122 1
5.3L RPO (L84) 6.2L RPO (L87) INSULATOR, VLV RKR ARM CVR RIGHT 12703336 1
6.6L RPO (L8T) INSULATOR, VLV RKR ARM CVR LEFT 12703339 1
6.6L RPO (L8T) INSULATOR, VLV RKR ARM CVR RIGHT 12703340 1

 


13 Affected Products

Vehicles

MAKE MODEL YEAR
CADILLAC ESCALADE 2022
CADILLAC ESCALADE ESV 2022
CHEVROLET SILVERADO 1500 2022
CHEVROLET SILVERADO 2500 2022
CHEVROLET SILVERADO 3500 2022
CHEVROLET SUBURBAN 2022
CHEVROLET SUBURBAN 1500 2022
CHEVROLET TAHOE 2022
GMC SIERRA 1500 2022
GMC SIERRA 2500 2022
GMC SIERRA 3500 2022
GMC YUKON 2022
GMC YUKON XL 2022

 


1 Associated Document

Manufacturer Communications

Bulletin No.: 22-NA-060
Date: September, 2022

https://www.nhtsa.gov/recalls?nhtsaId=10222798

MC-10222798-0001.pdf 989.963KB

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