2020 Corvette: Service Bulletin: #PIP5752G: Service Engine Light Misfire Engine Noise With DTC P0300 P0106 P0506 - (Nov 20, 2020)

#PIP5752G: Service Engine Light Misfire Engine Noise With DTC P0300 P0106 P0506 - (Nov 20, 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

2020-2021

All

All

5.3 L82 L84 6.2 L87 6.6 L8T

All

Chevrolet

Suburban

2021

All

All

5.3 L84 6.2 L87

All

Chevrolet

Tahoe

2021

All

All

5.3 L84 6.2 L87

All

GMC

Sierra

2020-2021

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,P3189, P318A, P318B, P318C, P318D, P318E, P318F, P3190.

Cause

Possible broken valve spring.

Note: If you suspect you have a valve spring concern please contact Technical Assistance at (866) 960-6006 (after providing your case number, please select prompt one for engine Drivability then, prompt one for gasoline engines) TAC will assist with issue verification and expediting parts. In Canada, contact the Canadian Technical Assistance Centre at the number you have been provided.

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 and the vehicle is built between June 1, 2020 to October 7, 2020:

Note: Brand Quality has placed the following Part number for 2020, 2021  6.2L L87, LT1, LT2, LT4 valve springs on a Technical Assistance Center part restriction

P/N 12691120 - 6.2L L87, LT1, LT2, LT4

Please add any pictures of the concern to the case that will help with the diagnostics. 

Check for a damaged intake manifold runner for the cylinder with the concern.  

00-06-01-026M: Engine Replacement After Severe Internal Engine Damage -Replace Intake Manifold

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

8

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.

10/16/2020 - Updated to add Admin. Details

10/21/2020 - Updated to add contact Technical assistance

10/23/2020 - Updated to add Valve Spring Part Restriction.

10/28/2020 - Updated to add MY 2021 for T1XX Pick up 

11/20/2020- updated to add DTC to the concern 

Article ID: 1474
Created: November 23, 2020
Last Updated: November 23, 2020

Online URL: https://www.corvetteactioncenter.com/tech/knowledgebase/article/2020-corvette-service-bulletin-pip5752g-service-engine-light-misfire-engine-noise-with-dtc-p0300-p0106-p0506-nov-20-2020-1474.html