Dorman Transmission Oil Pan for select GM models — OE FIX with integrated drain plug, corrosion-resistant

The Dorman 265-582 OE FIX transmission oil pan replaces the factory pan on select GM vehicles and adds an integrated drain plug so transmission fluid can be removed cleanly before service.

If you're servicing or replacing a leaky transmission pan on Cadillac, Chevrolet, GMC or Hummer models listed for this part, this Dorman pan is built to match original fit and function while making routine fluid changes neater and faster. Manufactured to meet OE-style specifications and tested for fit and corrosion resistance, the pan is a practical upgrade when a damaged or leaking pan requires replacement.

How does the integrated drain plug make service easier?

The built-in drain plug lets you remove most transmission fluid before loosening the pan, which prevents the large spill and mess that commonly occurs during pan removal. That simplifies fluid capture, reduces cleanup time and lowers the risk of contaminating the work area.

• Drains fluid before pan removal to avoid full pan spills
• Speeds routine fluid changes and diagnostic work
• Reduces fluid waste and cleanup materials

Will this pan fit my vehicle and match the original mounting points?

Dorman engineers this OE FIX pan to mirror the original pan's mounting and sealing characteristics for the compatible model years listed. However, because trim and submodel differences exist, always confirm fitment using your vehicle make, model and trim in the garage tool before purchase.

• Designed to match factory mounting hole pattern and dimensions
• Vehicle try-on testing performed for listed years and models
• Use the garage fitment tool to confirm compatibility

What construction and testing back up durability?

The pan is manufactured to strict specifications and undergoes salt-spray and vehicle try-on testing to check corrosion resistance and fit over time. Those quality checks aim to reduce leaks and withstand daily driving conditions for long-term reliability.

• Salt-spray testing for improved corrosion resistance
• Try-on testing to verify installation and clearance
• Built to resist impact and sealing issues encountered in normal use

What should I prepare for installation and maintenance?

Installation requires the right gasket or sealant and torqueing the pan bolts to factory specs; the drain plug allows fluid removal beforehand for a cleaner service. After installation, check for leaks and proper fluid level per the vehicle manufacturer's instructions.

• Replace gasket or apply recommended sealant when installing
• Drain fluid via the plug before loosening pan bolts
• Torque bolts to factory specification and verify no leaks after refill

Who is this for: This Dorman OE FIX transmission oil pan is intended for owners and technicians working on compatible Cadillac, Chevrolet, GMC and Hummer models that need a reliable replacement pan or a cleaner way to perform transmission service. It's especially useful for DIY mechanics, independent shops and fleet maintenance teams who want a direct-fit pan with a service-friendly drain plug to speed repairs while maintaining OE-style fit and performance. Always verify exact vehicle fitment before ordering to ensure compatibility with your trim and model year.