| Subject: | Ticking Noise from the Engine |
This bulletin replaces PIP5606E. Please discard PIP5606E.
|
Brand: |
Model: |
Model Year: |
VIN: |
Engine: |
Transmission: | ||
|---|---|---|---|---|---|---|---|
|
from |
to |
from |
to | ||||
|
Cadillac |
CTS |
2019 |
2019 |
— |
— |
6.2L (LT4) |
— |
|
Escalade |
2019 |
2020 |
5.3L, 6.2L (L83, L86) |
||||
|
Chevrolet |
Camaro |
2019 |
2020 |
6.2L (LT1, LT4) |
|||
|
Corvette |
2019 |
2019 |
6.2L (LT1, LT4, LT5) |
||||
|
2020 |
2020 |
6.2L (LT2) |
|||||
|
Silverado 1500 (New Model 12th Digit VIN = 7) - 4WD |
2019 |
2019 |
4.3L, 5.3L, 6.2L (L84, L87, LV3) |
||||
|
Silverado 1500 (New Model) |
2019 |
2020 |
5.3L, 6.0L, 6.2L (L83, L86, L96) |
||||
|
Silverado LD |
2019 |
2019 |
4.3L, 5.3L, 6.2L (L84, L87, LV3) |
||||
|
Suburban |
2019 |
2020 |
5.3L (L83, L86) |
||||
|
Tahoe |
2019 |
2020 |
5.3L, 6.0L, 6.2L (L83, L86, L96) |
||||
|
GMC |
Sierra Limited |
2019 |
2019 |
5.3L, 6.0L, 6.2L (L83, L86, L96) |
|||
|
Sierra 1500 (New Model) |
2019 |
2020 |
4.3L, 5.3L, 6.2L (L84, L87, LV3) |
||||
|
Yukon Models |
2019 |
2020 |
5.3L, 6.2L (L83, L86) |
||||
|
Involved Region or Country |
North America, Europe, Russia, Middle East, Iraq, Israel, Palestine, Argentina, Brazil, Chile, Colombia, Ecuador, Paraguay, Peru, Uruguay, Venezuela, Japan, Cadillac Korea (South Korea), GM Korea Company, Thailand |
|
Condition |
Some customers may comment that they hear a ticking noise coming from the engine when cold.
|
|
Cause |
This condition may be caused by a lifter not having a sufficient amount of oil during cold start operation (not pumped up). |
|
Correction |
To correct this condition, follow the Service Procedure below. |
Allow the engine to sit overnight.
Note: You may need to allow 5-7 minutes to confirm.
Note: Refer to Service Bulletin 20-NA-038 for additional information on AFM and DFM usage.
|
Causal Part |
Description |
Part Number |
Qty |
|---|---|---|---|
|
X |
LIFTER, VLV (Active) |
12680871 |
2 per bank (6 CYL DFM) |
|
4 per bank (8 CYL AFM) |
|||
|
8 per bank (8 CYL DFM) |
|||
|
X |
LIFTER, VLV (NON-ACTIVE LIFTERS) |
12648846 |
4 per bank (6 CYL) |
|
4 per bank (8 CYL non DFM) |
|||
|
N/A |
GASKET, CYL HD (L84) |
12622325 |
1 |
|
N/A |
GASKET, CYL HD (L87) |
12688943 |
1 |
|
N/A |
GASKET, CYL HD (LT1) |
12659260 |
1 |
|
N/A |
GASKET, CYL HD (LV3) |
12632968 |
1 |
|
N/A |
BOLT, CYL HD (M12x1.75x102) |
11611976 |
Refer to EPC |
|
N/A |
BOLT, CYL HD (M12x1.75x134) |
11546959 |
Refer to EPC |
|
N/A |
GASKET, VLV RKR ARM CVP |
12619787 |
1 |
|
N/A |
GASKET, EXH MANIF |
12657093 |
1 |
|
N/A |
PIPE, FUEL FEED INTR |
12677002 |
1 |
|
N/A |
PIPE, FUEL FEED INTER |
12679463 |
1 |
|
N/A |
GASKET, INT MANIF |
12626354 |
6 (6 CYL) |
|
8 (8 CYL) |
|||
|
N/A |
GASKET, W/PMP |
12682391 |
1 |
|
N/A |
SEAL, KIT F/INJR (O-ring) |
12672366 |
Refer to EPC |
Note: Only select the labor operation that coincides with the repair performed.
For vehicles repaired under the Powertrain coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.
|
Labor Operation |
Description |
Labor Time |
|---|---|---|
|
4062390 |
Valve Lifter Replacement - Right Side |
Use Published Labor Operation Time |
|
4062391 |
Valve Lifter Replacement - Both Sides |
|
|
4062410 |
Valve Lifter Replacement - Left Side |
|
|
4062450 |
Valve Lifter Replacement |
|
Version |
3 |
|
Modified |
Released February 14, 2020 May 28, 2020 – Added RPO LT2 to Corvette and Cylinder Head Gasket P/Ns 12632968 (LV3) and 12688943 (L87) to Parts Information. December 01, 2020 – Updated the Quantity information for P/N 12626354 and 12672366 in the Parts Information section. |
Article ID: 1475
Created: December 2, 2020
Last Updated: December 2, 2020
Online URL: https://www.corvetteactioncenter.com/tech/knowledgebase/article/2019-2020-corvette-service-bulletin-19-na-218-ticking-noise-from-the-engine-dec-1-2020-1475.html