“This site contains affiliate links for which OEMDTC may be compensated” |
NHTSA ID Number: 10198859
Manufacturer Communication Number: 20NA161
Summary
This informational bulletin advises the technician to check for a possible stuck oil pressure relief valve.
8 Affected Products
Vehicles
MAKE | MODEL | YEAR |
CHEVROLET | 3500 | 2019 |
CHEVROLET | EXPRESS | 2019-2020 |
CHEVROLET | SILVERADO 2500 | 2019 |
CHEVROLET | SUBURBAN | 2019 |
GMC | SAVANA | 2019-2020 |
GMC | SIERRA 2500 | 2019 |
Condition
Some customers may comment on one or more of the following conditions:
• MIL is illuminated.
• Oil Pressure Indicator on.
Some customers may also comment that the MIL illuminates and then turns off.
Some technicians may find DTC P0521 (Engine Oil Pressure Sensor Performance) active or stored in history in the Engine Control Module (ECM).
Cause
This condition may be caused by a sticking oil pressure relief valve within the oil pump assembly.
Correction
If you encounter a vehicle with the above DTC or conditions and before replacing any parts, it will be necessary to follow the steps below to determine what failure mode may exist and what the correct repair procedure is:
⇒ Remove the oil level indicator and confirm the oil level is at the full mark and not overfilled.
If oil level is full, it will be necessary to follow the steps below:
– Inspect the #1 main bearing for any damage.
• If the #1 main bearing is not damaged, then it will be necessary to replace the engine oil pump only.
• If the #1 main bearing is damaged but not spun it will be necessary to replace the crankshaft, main bearings, rod bearings and the engine oil pump.
• If the #1 main bearing was spun it will be necessary to replace the engine assembly.
When the applicable repair is complete road test vehicle to ensure engine is operating as designed.
Parts Information
Description | Part Number | Qty |
PUMP, OIL | 12696357 | 1 |
ENGINE, GASOLINE (SERV NEW) L96 | 19256594 | 1 |
ENGINE, GASOLINE (SERV NEW) LC8 | 12642269 | 1 |
CRANKSHAFT, (CROSS DRILLED CRANK) | 12685656 | 1 |
BEARING KIT, CR/SHF (STD) (#3) | 89017572 | 1 |
BEARING KIT, CR/SHF (#1,2,4,5) (STD) | 89017571 | 4 |
BEARING KIT, CONN ROD (STD) | 89017573 | 8 |
GASKET, OIL PAN | 12612350 | 1 |
SEAL, O/PMP SUC PIPE (0-RING) | 12584922 | 1 |
HOUSING, CR/SHF RR OIL SEAL | 12639250 | 1 |
GASKET, CR/SHF RR OIL SEAL HSG | 12639249 | 1 |
BOLT, CR/SHF BALR (M16x2.0x103) | 12557840 | 1 |
STUD, CR/SHF BRG CAP (HFH, M10x2x23) | 12560273 | 10 |
BOLT, CR/SHF BRG CAP (SIDE) (SHORT) (M8x1.25×11) | 12556127 | 10 |
BOLT, CR/SHF BRG CAP (M10x2x102.5) | 12560272 | 10 |
GASKET, ENG FRT CVR | 12633904 | 1 |
SEOCONTENT-START
Service Bulletin Bulletin No.: 20-NA-161 Date: May, 2021 INFORMATION Subject: Information on Engine Low Oil Pressure Indicator on the Driver Information Center (DIC) – DTC P0521 Set Brand: Model: Model Year: Date Breakpoint: Engine: Transmission: from to from to Chevrolet Express 2019 2020 – – 6.0L (L96 LC8) – 3500/4500 Medium Duty (LCF) 2019 Silverado 2500/3500 2019 Suburban 2019 GMC Savana 2020 Sierra 2500/3500 2019 Involved Region or Country North America, Middle East, Iraq, Israel, Palestine, Chile (West), Peru (West), Thailand (ASEAN) Condition Some customers may comment on one or more of the following conditions: • MIL is illuminated. • Oil Pressure Indicator on. Some customers may also comment that the MIL illuminates and then turns off. Some technicians may find DTC P0521 (Engine Oil Pressure Sensor Performance) active or stored in history in the Engine Control Module (ECM). Cause This condition may be caused by a sticking oil pressure relief valve within the oil pump assembly. Correction If you encounter a vehicle with the above DTC or conditions and before replacing any parts, it will be necessary to follow the steps below to determine what failure mode may exist and what the correct repair procedure is: ⇒ Remove the oil level indicator and confirm the oil level is at the full mark and not overfilled. If oil level is full, it will be necessary to follow the steps below: – Inspect the #1 main bearing for any damage. • If the #1 main bearing is not damaged, then it will be necessary to replace the engine oil pump only. • If the #1 main bearing is damaged but not spun it will be necessary to replace the crankshaft, main bearings, rod bearings and the engine oil pump. • If the #1 main bearing was spun it will be necessary to replace the engine assembly. When the applicable repair is complete road test vehicle to ensure engine is operating as designed. Page 2 May, 2021 Bulletin No.: 20-NA-161 Parts Information Causal Part Description Part Number Qty X PUMP, OIL 12696357 1 N/A ENGINE, GASOLINE (SERV NEW) L96 19256594 1 N/A ENGINE, GASOLINE (SERV NEW) LC8 12642269 1 N/A CRANKSHAFT, (CROSS DRILLED CRANK) 12685656 1 N/A BEARING KIT, CR/SHF (STD) (#3) 89017572 1 N/A BEARING KIT, CR/SHF (#1,2,4, 5) (STD) 89017571 4 N/A BEARING KIT, CONN ROD (STD) 89017573 8 N/A GASKET, OIL PAN 12612350 1 N/A SEAL, O/PMP SUC PIPE (0-RING) 12584922 1 N/A HOUSING, CR/ SHF RR OIL SEAL 12639250 1 N/A GASKET, CR/ SHF RR OIL SEAL HSG 12639249 1 N/A BOLT, CR/SHF BALR (M16x2.0x103) 12557840 1 N/A STUD, CR/SHF BRG CAP (HFH, M10x2x23) 12560273 10 N/A BOLT, CR/SHF BRG CAP (SIDE) (SHORT) (M8x1.25×11) 12556127 10 N/A BOLT, CR/SHF BRG CAP (M10x2x102.5) 12560272 10 N/A GASKET, ENG FRT CVR 12633904 1 Bulletin No.: 20-NA-161 May, 2021 Page 3 Warranty Information Note: Only use the Labor Operation number that coincides with the repair performed. For vehicles repaired under warranty, use: Labor Operation Description Labor Time 4066070 Oil Pump Replacement Use the Published Labor 4067490 Engine Replacement Operations Time 4066750 Crankshaft Replacement Version 2 Modified Released November 30, 2020 Revised May 10, 2021 – Removed the Breakpoint Date, Changed the Correction section information and added #3 Crankshaft Bearing Part to Parts Information section.
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 20-NA-161
Date: May, 2021
https://www.nhtsa.gov/recalls?nhtsaId=10198859
“This site contains affiliate links for which OEMDTC may be compensated” |
- Mobil 1 High Mileage full-synthetic motor oil 5W-30 is designed for engines with over 75,000 miles to go up to 10,000 miles between oil changes.*
- Utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness
- Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
- Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -30 degrees F)
- Helps extend engine life by working to prevent damaging deposits and sludge buildup
- Full synthetic 5W-30 motor oil provides strong engine performance and protection against deposits between oil changes
- Provides improved fuel economy (based on the latest industry standard)
- Designed to provide more performance with superior lubrication flow and pumpability at high and low temperatures (compared to Quaker State conventional and synthetic blend motor oils).
- Formulated with high resistance to oxidation, keeping the oil fresher for longer.
- Reduces friction to maximize horsepower (compared to Quaker State conventional and synthetic blend motor oils)
- Synthetic blend 5W-30 engine oil formula that keeps engines clean and responsive
- No leading synthetic blend motor oil provides better wear protection (based on Sequence IVA wear test using SAE 5W-30)
- Helps prevent sludge and other damaging deposits (based on Seq VH Sludge Test)
- Compatible with engine seals and all conventional oils
- Suitable for all car, SUV, light van, and truck gasoline engines under all driving conditions (For vehicles calling for ILSAC GF-6A, API SP-RC and all previous categories; Chrysler MS-6395)
- 3X stronger against viscosity breakdown than leading full synthetic, based on Kurt Orbahn test in 5W-30 grade
- 10X better high temperature performance, as measured in Sequence IIIH engine test vs. API SP test limit
- 6X better wear protection
- 1.4X better sludge protection, as measured in Sequence VH engine test vs. API SP test limit
- Meets ILSAC GF-6 to prevent low speed pre ignition (LSPI) and timing chain wear protection
- Full synthetic 5W-30 engine oil that is made with natural gas and designed for complete protection for top engine performance
- Helps extend engine life and protects for up to 15 years or 500,000 miles, whichever comes first. Guaranteed* (see Warranty Information in Product Description).
- Provides better fuel economy (based on the latest industry standards)
- Pennzoil Platinum 5W-30 keeps pistons up to 45% cleaner than the toughest industry standard (Based on Sequence IIIH results)
- Provides unsurpassed wear protection (compared to industry standard Sequence IVA test)
- Full synthetic 5W-20 engine oil with PurePlus Technology that is race-trusted for unbeatable engine protection*
- Pennzoil Ultra Platinum helps extend engine life and protects for up to 20 years or 750,000 miles, whichever comes first** (see warranty information in Product Description)
- No other leading motor oil provides better wear protection from friction (based on Sequence IVA wear test using SAE 5W-30)
- Helps protect engines from loss of power and provides better fuel economy (based on the latest industry standard)
- Keeps pistons dramatically cleaner than required by the toughest industry standards (based on ILSAC GF-6 and Sequence IIIH piston deposit test using SAE 5W-30)
- ENHANCED MAXLIFE TECHNOLOGY PREVENTS engine breakdown in extreme conditions with 50% better wear protection than the industry standard
- Superior wear protection on critical engine parts
- 6X better wear protection than industry standards, as measured in the latest Sequence IVA test
- Superior sludge cleaning and protection against new formation
- 1.3X better sludge protection than industry standards, as measured in Sequence VH sludge test vs. API SP limits
- Full synthetic formula provides thermal and oxidation stability
- Mobil Full Synthetic 5W-30 motor oil is formulated for vehicles upgrading from conventional oil or synthetic blend, or requiring full synthetic motor oil
- Provides guaranteed protection that's 1.5X longer than our conventional and synthetic blend oils, up to 7,500 miles between oil changes
- Helps to prevent sludge and deposit formation, to help reduce engine wear, and has balanced additive system formulation
- Provides excellent resistance to oil breakdown, for proven long-lasting protection, and maintains oil viscosity at high operating temperatures
- Recommended for all types of gasoline-powered vehicles, including those with turbocharged engines, and meets API SP resource-conserving
Last update on 2024-04-01 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.