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Manufacturer Communication Number: 18NA201
Summary
This technical bulletin provides a procedure to seal the bedplate bolt #621 if found the cause of the oil leak.
60 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| BUICK | ENVISION | 2016-2019 |
| BUICK | LACROSSE | 2018-2019 |
| BUICK | REGAL | 2016-2019 |
| CADILLAC | ATS | 2016-2019 |
| CADILLAC | CT6 | 2016-2019 |
| CADILLAC | CTS | 2016-2019 |
| CADILLAC | XT5 | 2017-2019 |
| CADILLAC | XTS | 2016-2019 |
| CHEVROLET | CAMARO | 2016-2019 |
| CHEVROLET | EQUINOX | 2016-2019 |
| CHEVROLET | IMPALA | 2017-2019 |
| CHEVROLET | MALIBU | 2016-2019 |
| CHEVROLET | TRAVERSE | 2016-2019 |
| GMC | ACADIA | 2016-2019 |
| GMC | CANYON | 2016-2019 |
| GMC | TERRAIN | 2016-2019 |
Condition
Some customers may comment on an oil leak.
Some technicians may find the oil leaking from a bolt at the lower crankcase (bed plate).
Cause
This condition may be caused by porosity in the casting port of the bed plate at bolt hole #621.
Correction
Validate oil leaking from the bolt hole by cleaning area of concern.
- If oil can be validated to be coming from bolt hole #621, apply sealant to the middle of the bolt and torque to specifications.
Important: When applying sealant to the threads. Allow a minimal of 12 hours for the sealant to cure. DO Not run engine until the cure period is over.
⇒ Only apply Loctite PST 565 or equivalent to the threads indicated above (A), leaving the top and bottom threads clear of sealant.
If oil can not be validated to be coming from bolt hole #621, refer to SI for further diagnostics.
Parts Information
| Description | Part Number | Qty |
| Sealant, Loctite | 12346004  |
1 |
| Sealant, Loctite Canada P/N | 10953480 |
SEOCONTENT-START
Service Bulletin Bulletin No.: 18-NA-201
Date: May, 2021
TECHNICAL
Subject: Oil Leak from Oil Pan Area
Brand: Model:
Model Year: VIN: Engine: Transmission:
from to from to
Buick
All 2016 2019
LTG,
LCV, LHN
Cadillac LTG, LCV
Chevrolet LTG, LCV
GMC LTG, LCV
Holden
Equinox
2018 2019 LTG
Commodore
Involved Region or Country North America, Australia, New Zealand, China, Thailand, Peru, South Africa, Saudi
Arabia, Israel, Kuwait, Colombia, Albania, Japan, Germany, Brazil, Korea
Condition
Some customers may comment on an oil leak.
Some technicians may find the oil leaking from a bolt at the lower crankcase (bed plate).
Cause
5105814
This condition may be caused by porosity in the casting port of the bed plate at bolt
hole #621.
Page 2 May, 2021 Bulletin No.: 18-NA-201
Correction
Validate oil leaking from the bolt hole by cleaning area of concern.
• If oil can be validated to be coming from bolt hole #621, apply sealant to the middle of
the bolt and torque to specifications.
5105877
Important: When applying sealant to the threads. Allow a minimal of 12 hours for the
sealant to cure. DO Not run engine until the cure period is over.
⇒ Only apply Loctite PST 565 or equivalent to the threads indicated above (A),
leaving the top and bottom threads clear of sealant.
• If oil can not be validated to be coming from bolt hole #621, refer to SI for further
diagnostics.
Parts Information
Causal
Part
Description Part
Number
Qty
N/A Sealant, Loctite** 12346004
(Canada P/N
10953480)
1
**Australia / New Zealand HSOs are requested to source
this sealant as necessary as P/N 12346004, is not available
to order from HSPO.
Warranty Information
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
4086298* Apply Sealant to Bolt #621 Use Actual Clock Time
*This is a unique Labor Operation for Bulletin use only.
Version 3
Modified
Released June 14, 2018
Revised June 26, 2018 – Add Holden to Model section.
Revised May 05, 2021 – Update Involved Region section and Parts Information section
for Australia/New Zealand
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 18-NA-201
Date: May, 2021
https://www.nhtsa.gov/recalls?nhtsaId=10199232
MC-10199232-9999.pdf 260.221KB
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NHTSA ID Number: 10198841
Manufacturer Communication Number: 18NA201
Summary
This technical bulletin provides a procedure to seal the bedplate bolt #621 if found the cause of the oil leak.
1 Associated Document
Manufacturer Communications
Bulletin No.: 18-NA-201
Date: May, 2021
https://www.nhtsa.gov/recalls?nhtsaId=10198841
MC-10198841-9999.pdf 260.221KB
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| “This site contains affiliate links for which OEMDTC may be compensated” |
- Protects threads
- Medium strength
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- Can be removed with hand tools
- Size: 50 ml
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- Specially Designed for Families: Optimize the Product Formula, It Provides Medium-strength Curing Fastness and Viscosity to Ensure the Normal Use of Items, And Provides Medium-strength Torque that Allows You to Manually Remove Bolts & Nuts with Tools.
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