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ACDelco 12677838 - Engine Oil Pressure Sensor
Product Overview
The ACDelco 12677838 Engine Oil Pressure Sensor is designed to accurately monitor the oil pressure levels in your vehicle's engine, ensuring optimal performance and longevity. Built to OE specifications, this sensor guarantees a perfect fit and reliable operation in various Chevrolet and GMC models. Trust in ACDelco’s reputation for quality and performance, knowing that this part will help maintain your engine's integrity. Choose ACDelco 12677838 for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This ACDelco 12677838 is equivalent to or replaces the following part numbers:
Vehicle Compatibility
- Chevrolet Express 2500 (2003-2005) 4.3 V6
- Chevrolet Silverado 1500 (2003-2013) 4.3 V6
- Chevrolet Express 1500 (2003-2014) 4.3 V6
- Chevrolet Silverado 1500 Classic (2007) 4.3 V6
- GMC Savana 2500 (2003-2005) 4.3 V6
- GMC Sierra 1500 (2003-2013) 4.3 V6
- GMC Savana 1500 (2003-2014) 4.3 V6
- GMC Sierra 1500 Classic (2007) 4.3 V6
This also fits other applications. Please use the vehicle selector tool to verify fitment.
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Frequently Asked Questions
What does the ACDelco 12677838 Engine Oil Pressure Sensor do?
The ACDelco 12677838 Engine Oil Pressure Sensor measures the oil pressure in your engine, helping to ensure that it operates efficiently and safely.
How do I know if the ACDelco 12677838 is compatible with my vehicle?
You can verify compatibility by checking the vehicle compatibility section above or using our vehicle selector tool for precise fitment.
What are common symptoms of a failing oil pressure sensor?
Common symptoms include fluctuating oil pressure readings, oil pressure warning lights illuminating, or engine performance issues. A faulty sensor like the ACDelco 12677838 can lead to inaccurate readings.
What DTCs are associated with oil pressure sensors?
Common Diagnostic Trouble Codes (DTCs) related to oil pressure sensors include P0520, P0521, P0522, and P0523.
Why should I order the ACDelco 12677838?
Order ACDelco 12677838 today for a factory-correct replacement that restores safety and performance.
- BrandACDelco
- ManufacturerACDelco
- MPN12677838
- Part TypeEngine Oil Pressure Sensor
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2007 | Chevrolet | Silverado 1500 Classic | LS (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2007 | Chevrolet | Silverado 1500 Classic | WT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2007 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2007 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2007 | GMC | Sierra 1500 Classic | SL (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2007 | GMC | Sierra 1500 Classic | WT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2007 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2007 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2003 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2003 | Chevrolet | Express 1500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2003 | Chevrolet | Express 2500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2003 | Chevrolet | Express 2500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2003 | Chevrolet | Silverado 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 5, Speed: 4, Transmission Control: Manual, Transmission Control: Automatic, Transmission Code: NV3500/MG5, Transmission Code: 4L60-E |
| 2003 | Chevrolet | Silverado 1500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 5, Speed: 4, Transmission Control: Manual, Transmission Control: Automatic, Transmission Code: NV3500/MG5, Transmission Code: 4L60-E |
| 2003 | Chevrolet | Silverado 1500 | LT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 5, Speed: 4, Transmission Control: Manual, Transmission Control: Automatic, Transmission Code: NV3500/MG5, Transmission Code: 4L60-E |
| 2003 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 5, Speed: 4, Transmission Control: Manual, Transmission Control: Automatic, Transmission Code: NV3500/MG5, Transmission Code: 4L60-E |
| 2003 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2003 | GMC | Savana 1500 | SLE (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2003 | GMC | Savana 2500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2003 | GMC | Sierra 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 5, Speed: 4, Transmission Control: Manual, Transmission Control: Automatic, Transmission Code: NV3500/MG5, Transmission Code: 4L60-E |
| 2003 | GMC | Sierra 1500 | SL (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 5, Speed: 4, Transmission Control: Manual, Transmission Control: Automatic, Transmission Code: NV3500/MG5, Transmission Code: 4L60-E |
| 2003 | GMC | Sierra 1500 | SLE (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 5, Speed: 4, Transmission Control: Manual, Transmission Control: Automatic, Transmission Code: NV3500/MG5, Transmission Code: 4L60-E |
| 2003 | GMC | Sierra 1500 | SLT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 5, Speed: 4, Transmission Control: Manual, Transmission Control: Automatic, Transmission Code: NV3500/MG5, Transmission Code: 4L60-E |
| 2003 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 5, Speed: 4, Transmission Control: Manual, Transmission Control: Automatic, Transmission Code: NV3500/MG5, Transmission Code: 4L60-E |
| 2004 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2004 | Chevrolet | Express 1500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2004 | Chevrolet | Express 2500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2004 | Chevrolet | Express 2500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2004 | Chevrolet | Silverado 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2004 | Chevrolet | Silverado 1500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2004 | Chevrolet | Silverado 1500 | LT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2004 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2004 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2004 | GMC | Savana 1500 | SLE (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2004 | GMC | Savana 2500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2004 | GMC | Savana 2500 | SLE (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2004 | GMC | Sierra 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2004 | GMC | Sierra 1500 | SLE (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2004 | GMC | Sierra 1500 | SLT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2004 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2005 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2005 | Chevrolet | Express 1500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2005 | Chevrolet | Express 2500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2005 | Chevrolet | Express 2500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2005 | Chevrolet | Silverado 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2005 | Chevrolet | Silverado 1500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2005 | Chevrolet | Silverado 1500 | LT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2005 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2005 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2005 | GMC | Savana 1500 | SLE (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2005 | GMC | Savana 2500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2005 | GMC | Savana 2500 | SLE (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2005 | GMC | Sierra 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2005 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2006 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2006 | Chevrolet | Express 1500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2006 | Chevrolet | Express 1500 | LT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2006 | Chevrolet | Silverado 1500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2006 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2006 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2006 | GMC | Savana 1500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2006 | GMC | Savana 1500 | LT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2006 | GMC | Sierra 1500 | SL (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2006 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2008 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2008 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2008 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2008 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2009 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2009 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2009 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2009 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2010 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2010 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2010 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2010 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2011 | Chevrolet | Silverado 1500 | LS (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2011 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2011 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2011 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2011 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2012 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2012 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2012 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2012 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2013 | Chevrolet | Silverado 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2013 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2013 | GMC | Sierra 1500 | WT (4.3 V6 GAS) | Engine: LU3, VIN: X, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2013 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2014 | Chevrolet | Express 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
| 2014 | GMC | Savana 1500 | Base (4.3 V6 GAS) | Engine: LU3, VIN: X |
Warranty Overview
At Newparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.
Standard Warranty – Most Parts
Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.
Protection: Defects in materials or workmanship under normal personal use.
Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.
Exclusions:
Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)
Commercial, fleet, rideshare, off-road, or racing use
Improper installation, misuse, accidents, or modifications
Not Covered: Labor, shipping, towing, or incidental costs.
Bison Performance Warranty – Our House Brand
Coverage: Limited Lifetime Warranty for as long as you own your vehicle.
Applies To: All products sold under the Bison Performance label.
Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.
Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).
What’s Included: Replacement of the defective product (labor and shipping excluded).
Warranty Claim Requirements
To keep claims fast and fair, we require:
Proof of purchase (invoice or order confirmation).
Photos or videos showing the defective part, order number, date, VIN, and odometer reading.
Diagnostic reports or part returns for non-visible issues may be requested.
Claims must be truthful, properly documented, and reflect normal consumer use.
Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.
For full details and exclusions, please see our complete Warranty Terms & Conditions.
This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.
Return Policy Overview
Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
To start a return, use our Return Portal or contact support.
Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)
Refunds: Issued to your original payment method within 3–5 business days after inspection
Exchanges: Not automatic — please return and reorder
Replacements: May be approved for incorrect or defective items reported within 7 days
Not returnable:
Used or installed parts
Electrical components
Opened filter kits, gaskets, or contaminated items
Final sale or custom orders
Important Notes:
Return shipping is your responsibility unless we made a verified error
Fitment is the customer’s responsibility (we can assist, but do not guarantee)
Country of origin may vary and is not grounds for return
For complete details, please see our full Return Policy.
This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.
Fast, Reliable Shipping — Straight to Your Door
We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.
We use trusted carriers like UPS, FedEx, and USPS.
Tracking info is emailed to you as soon as your order ships.
Delivery estimates at checkout are based on carrier data, but not guaranteed.
Need help with a shipment?
If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.
For full details, please see our complete Shipping Policy.
This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.







