HHZL Oil Pressure Sensor Kit for GM Trucks & SUVs — 11/16" Socket, Direct-Replace Sending Unit

HHZL’s oil pressure sensor socket kit includes a direct-replacement oil pressure sending unit, protective filter, and an 11/16" socket for effortless installation on many GM V6/V8 vehicles.

If your dashboard oil pressure warning or gauge is acting up on a compatible Chevy, GMC, Cadillac, Hummer, Buick, Pontiac, Saab or Isuzu model, this HHZL kit provides the parts needed to replace the sending unit quickly and reliably. The bundle contains the sensor, a screen-style filter, and a single 11/16" socket sized for a 3/8" drive or 1-1/8" hex wrench, making it a compact one-stop solution for common GM-fit oil pressure switch replacements.

Which vehicles will this HHZL oil pressure sending unit fit?

This kit targets a broad range of GM-derived platforms from late 1990s Corvettes to 2003–2008 full-size trucks and SUVs, plus several related brands. It lists direct-replacement part numbers and covers many 4.8L–7.0L engines used across Chevrolet, GMC, Cadillac, Buick, Pontiac, Hummer, Saab and Isuzu models.

• Chevrolet: Corvette (1997–2008), Silverado/Tahoe/Suburban/Trailblazer/SVR/Express/SSR/Avalanche (selected years/engines)
• GMC & Cadillac: Sierra/Yukon/Savana/Escalade/CTS (2003–2008 ranges where specified)
• Also compatible: Hummer H2/H3, Buick Rainier/Allure/LaCrosse, Pontiac G8/GTO/Grand Prix, Saab 9-7x, Isuzu Ascender

How do I confirm this sensor fits my vehicle?

Match either the vehicle application list or the original part number before purchase. The HHZL unit replaces common GM oil pressure sensor part numbers, but verifying fitment prevents returns and saves time.

• Compare your current sensor’s part number to: 12573107, 12677836, 12616646, D1846a
• Check engine displacement and model year against the kit’s compatibility range
• Look up your VIN or consult a parts database for exact cross-reference

What comes in the HHZL kit and how will it help during replacement?

The kit bundles the sensor, a replacement filter/screen, and the proper 11/16" socket so you have everything needed to remove the old sending unit and install the new one. Including the socket minimizes the chance of using an incorrect tool that could damage the sensor or housing.

• Oil pressure sending unit: direct-replacement design for instrument cluster signal
• Filter/screen: helps prevent debris from clogging the sensor port after installation
• 11/16" socket: fits 3/8" drive or 1-1/8" hex wrench for controlled torque application

What should I expect after installing the HHZL replacement sensor?

Once properly installed and tightened to the manufacturer’s torque spec, the new sending unit should restore consistent pressure reporting to the gauge or warning lamp. Always clear any saved fault codes and verify the electrical connector and harness are secure to avoid intermittent readings.

• Re-check for oil leaks around the sensor port after first drive
• Clear diagnostic codes and monitor for stable gauge behavior
• Inspect wiring and connector contacts for corrosion or damage

Who is this for: The HHZL Oil Pressure Sensor Socket Kit is intended for DIY mechanics, fleet technicians, and professional garages working on GM-based trucks, SUVs and performance cars that match the listed model years and engine sizes. Choose this kit if you need a cost-effective, bundled replacement that includes the correct socket and filter, but always confirm fitment by comparing part numbers or consulting your vehicle’s service manual before ordering.