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2020 Corvette Service Bulletin: #PIP5752B: Service Engine Light misfire engine noise With DTC P0300 P0106 P0506 - Possible Valve Stem - (Oct 13, 2020)

#PIP5752B: Service Engine Light misfire engine noise With DTC P0300 P0106 P0506 - (Oct 13, 2020)

Subject:  Service Engine Light misfire engine noise With DTC P0300 P0106 P0506

Brand:

Model:

Model Year:

VIN:

Engine:

Transmission:

from

to

from

to

Cadillac

Escalade

2021

All

All

6.2 L87

All

Chevrolet

Camaro

2020 - 2021

All

All

6.2 LT1 LT4

All

Chevrolet

Corvette

2020

All

All

6.2 LT2

All

Chevrolet

Silverado

2020

All

All

5.3 L82 L84 6.2 L87 6.6 L8T

All

Chevrolet

Suburban

2021

All

All

5.3 L846.2 L87

All

Chevrolet

Tahoe

2021

All

All

5.3 L846.2 L87

All

GMC

Sierra

2020

All

All

5.3 L82 L84 6.2 L87 6.6 L8T

All

GMC

Yukon

2021

All

All

5.3 L84 6.2 L87

All

 

Involved Region or Country

North America

Condition

A Vehicle may have a concern of service engine light, misfire and engine noise with possible of DTC P0300 P0106 P0506.

Cause

Possible broken valve spring.

Correction

During inspection if you determine that the engine has a broken valve spring it will be necessary to perform a cylinder leakage test on the affected cylinder.

If no cylinder leakage is observed it will be necessary to replace all valve springs on both banks if the vehicle is built between June 1, 2020 to September 15, 2020. Note: This only applies to the 6.2L engines RPOs L87, LT1, LT4 and LT2. For all other engine RPOs L82, L84 and L8T just replace the affected valve spring.

If you determine that engine has cylinder leakage it will be necessary to inspect further to determine the extent of the engine damage to determine correct repair required.

Important: All valve springs will be requested back for further analysis and inspection.

 

Warranty Information

For vehicles repaired under the Powertrain coverage, use published labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information. 


Version

3

Modified

09/08/2020 - Created on.

09/21/2020 - Updated to add 2020 Chevrolet Camaro and edit the correction statement. 

10/13/2020 - Updated Model Years.

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