GM GENUINE PARTS Spin-On Automatic Transmission Filter TF950 (29539579) — OE-fit, reinforced felt media for GM trucks & SUVs

The GM Genuine Parts TF950 (29539579) is a spin-on replacement automatic transmission fluid filter engineered to restore reliable fluid flow and protect your transmission from contaminants.

Designed and validated by General Motors, this spin-on transmission filter matches original-equipment specifications for fit and filtration performance. Built with reinforced felt media and a tight sealing design, the TF950 is intended for GM trucks and SUVs that require the 29539579 fitment. Use of a GM Genuine Parts filter helps maintain correct line pressure and keeps particles out of the valve body and clutches, extending service intervals when paired with proper maintenance.

How does this filter keep transmission fluid clean?

The TF950 uses densely packed felt media treated with phenolic resin to capture metal shavings and other debris while maintaining steady fluid flow. The resin treatment strengthens the fibers so they resist heat and maintain structure under normal transmission operating temperatures.

• High-efficiency felt media traps fine particles without restricting flow.
• Phenolic-infused fibers resist breakdown at elevated fluid temperatures.
• Designed to align with OE fluid pathways for consistent filtration performance.

Will this filter maintain proper line pressure?

Yes — the TF950 is built with an air-tight seal that minimizes loss of line pressure, which is critical for reliable shifting and hydraulic control. The spin-on housing and gasket are engineered to match GM tolerances so pressure remains consistent across the valve body.

• Air-tight sealing design reduces pressure loss during operation.
• Spin-on housing provides a secure mechanical connection to the transmission.
• OE-validated dimensions ensure proper mating with factory gaskets and ports.

Which vehicles does the TF950 fit?

This filter fits a range of GM trucks and Hummer models produced in the 2001–2019 era that originally used the 29539579-style spin-on filter. Always verify with your vehicle VIN or parts diagram to confirm exact compatibility before purchase.

• Chevrolet Silverado 2500 HD and 3500 HD model years listed (2001–2019 coverage varies by model).
• GMC Sierra 2500 HD and 3500 HD compatible across similar model years.
• Hummer H1 2006 and other specified legacy GM platforms.

How durable is the TF950 under heavy-duty use?

Built to GM Genuine Parts standards, the TF950 combines rugged filter media and a reinforced housing to withstand heavy-duty service conditions common to towing and vocational use. The phenolic resin in the media helps maintain structural integrity under repeated thermal cycles.

• Phenolic-infused fibers resist softening from heat and chemical exposure.
• Robust spin-on housing tolerates service handling and installation torque.
• Engineered and tested to GM validation standards for durability.

Who is this for: The TF950 is intended for owners and technicians maintaining older GM heavy-duty trucks and select Hummer models that require the 29539579 spin-on transmission filter. It’s a practical choice for fleet managers, professional mechanics, and do-it-yourselfers who want an OEM-matched replacement to preserve transmission performance and reliability during routine service.