Only have a warning or code? Diagnose the cause first →
Where is the oil pressure sensor?
On this 2005 Tahoe 5.3L, the sensor is behind the intake manifold, toward the firewall. Mike reaches it from the driver’s side; access can differ on other vehicles.
Enlarge sensor locationChoose the replacement sensor
ACDelco / GM Original Equipment
Oil pressure sensor 12677836
GM lists this part for the 2005 Tahoe. Check your engine and VIN before ordering.
Listed as GM Genuine Parts. The video’s installed part is unidentified.
As an Amazon Associate I earn from qualifying purchases.
Other listed models & years
These are possible applications; confirm engine and VIN with GM. Shared part fitment does not establish the same access, torque or screen arrangement.
Chevrolet — Tahoe, Silverado & more
| Vehicle | Model years |
|---|---|
| Avalanche | 2007–2008 |
| Avalanche 1500 | 2003–2006 |
| Corvette | 1997–2008 |
| Express 1500 | 2003–2008 |
| Express 2500 | 2003–2008 |
| Express 3500 | 2003–2008 |
| Impala | 2006–2008 |
| Monte Carlo | 2006–2007 |
| SSR | 2003–2006 |
| Silverado 1500 | 2003–2008 |
| Silverado 1500 Classic | 2007 |
| Silverado 1500 HD | 2003–2006 |
| Silverado 1500 HD Classic | 2007 |
| Silverado 2500 | 2003–2004 |
| Silverado 2500 HD | 2003–2008 |
| Silverado 2500 HD Classic | 2007 |
| Silverado 3500 | 2003–2006 |
| Silverado 3500 Classic | 2007 |
| Silverado 3500 HD | 2007–2008 |
| Suburban 1500 | 2003–2008 |
| Suburban 2500 | 2003–2008 |
| Tahoe | 2003–2008 |
| Trailblazer | 2006–2008 |
| Trailblazer EXT | 2003–2006 |
GMC — Sierra, Yukon & more
| Vehicle | Model years |
|---|---|
| Envoy | 2005–2008 |
| Envoy XL | 2003–2006 |
| Envoy XUV | 2004–2005 |
| Savana 1500 | 2003–2008 |
| Savana 2500 | 2003–2008 |
| Savana 3500 | 2003–2008 |
| Sierra 1500 | 2003–2008 |
| Sierra 1500 Classic | 2007 |
| Sierra 1500 HD | 2003–2006 |
| Sierra 1500 HD Classic | 2007 |
| Sierra 2500 | 2003–2004 |
| Sierra 2500 HD | 2003–2008 |
| Sierra 2500 HD Classic | 2007 |
| Sierra 3500 | 2003–2006 |
| Sierra 3500 Classic | 2007 |
| Sierra 3500 HD | 2007–2008 |
| Yukon | 2003–2008 |
| Yukon XL 1500 | 2003–2008 |
| Yukon XL 2500 | 2003–2008 |
Cadillac — Escalade & CTS-V
| Vehicle | Model years |
|---|---|
| CTS (V trim) | 2004–2007 |
| Escalade | 2003–2008 |
| Escalade ESV | 2003–2008 |
| Escalade EXT | 2003–2008 |
Buick — Rainier, LaCrosse & Allure
| Vehicle | Model years |
|---|---|
| Allure | 2008 |
| LaCrosse | 2008 |
| Rainier | 2004–2007 |
Model/year lists transcribed from GM catalogs October 14, 2026. Product identity and Chevrolet catalog rechecked October 29, 2026. Live catalog fit takes precedence.
Tools for the demonstrated repair
- 1-1/16-inch sensor socket with rounded internal corners
- 8 mm socket for the engine cover
- Ratchet, extension/wobble adapter and torque wrench
Match socket fit and access length to your application.
Watch the full replacement video
Video loads only when you choose to play.
Expose the sensor & unplug the connector
Ignition off; engine cool. The following steps show the 2005 Tahoe 5.3L. Confirm the procedure for your engine.
Open the hood and loosen the engine cover bolt using an 8 mm socket - ↗ 1:09
Remove the engine cover by lifting up and releasing the rear tabs - ↗ 1:14
Locate the engine oil pressure sensor on the back or firewall side of the engine and unplug the sensor connector - ↗ 1:22
Remove the sensor & check for a screen
Using the special socket and an extension with a wobble or universal adapter remove the old sensor - ↗ 1:35
Where fitted, inspect the screen in the oil-pressure port for restrictions. Follow the applicable service procedure to clean or replace it. Watch the screen inspection · 1:43
Low scan reading with correct pressure at the oil-filter housing? Check the restricted-screen diagnostic branch →
Install, reconnect & verify
Check the new sensor’s washer and thread-sealing instructions before adding any sealer. Video · 2:30
Start the threads by hand. If they will not engage, stop and check alignment; do not force them with the ratchet. Video · 2:36
Demonstrated torque: 22 ft-lb on the 2005 Tahoe 5.3L. Confirm your engine and sensor specification; overtightening can break the sensor. Video · 2:40
Reconnect the plug, then complete the checks below before refitting the cover.
Sources & application notes
GoTech’s original video shows a 2005 Tahoe 5.3L with a gauge stuck high. The photos, tool sizes and 22 ft-lb torque value come from that demonstration. It has no filter screen. Neither the video title’s broader engine list nor shared part fitment verifies this procedure for every GM V8.
GM’s 12677836 catalog entry supplies the GM/ACDelco identity and model/year applications. The Amazon listing (paid link) was checked for the GM Genuine Parts brand and exact number on October 29, 2026. Seller, stock, price and individual-VIN fit are not established here.
GM PIP4786A supports the diagnostic screen branch only on its listed applications; the demonstrated 2005 Tahoe is outside its Tahoe year range. The route choices and final checklist are GoTech editorial guidance, not a claimed manufacturer procedure or completed vehicle test.
The original guide’s 45–60 minute estimate and difficulty 2/5 depend on access and experience. Original article/video: July 14, 2022; local revision: October 29, 2026.