ACDelco Gold Engine Water Pump for Hummer H3 / GMC Canyon & Chevy Trailblazer — 252-822 with Gaskets & O‑Rings, OE Fit

ACDelco Gold 252-822 (89036357) is a premium aftermarket engine water pump engineered to circulate coolant and maintain proper operating temperature for compatible GM and non‑GM vehicles.

This ACDelco Gold water pump is a high‑quality Professional replacement designed to match original equipment fit and function. It ships with the seals, gaskets, and O‑rings needed for a complete installation, reducing the chance of leaks and simplifying the repair process. Built and tested to meet performance expectations, the unit is intended to deliver dependable coolant flow and long service life when installed according to manufacturer guidelines.

How does this water pump maintain engine temperature?

The water pump drives coolant through the engine block and radiator, helping transfer heat away from the engine. A reliably sealed impeller and robust shaft bearings keep flow steady under load, while coated seals help resist wear and reduce the risk of internal or external leakage.

• Precision‑balanced impeller for consistent coolant circulation
• Coated seals to extend gasket life and resist corrosion
• Durable bearings and shaft to withstand thermal cycling

What vehicles does the ACDelco Gold 252-822 fit?

This part is vehicle specific but covers a range of GM and some non‑GM models. It fits late‑model Hummer H3/H3T and many GM mid‑size trucks and SUVs such as Canyon, Colorado, Envoy, Trailblazer, and Rainier within the model years listed by ACDelco.

• Hummer: 2007–2010 H3, 2009–2010 H3T
• GMC: Canyon (2004–2012), Envoy/Envoy XL (selected years)
• Chevrolet & Buick: Colorado, TrailBlazer variants, Rainier and others as specified

What comes in the box and how easy is installation?

The pump arrives with all necessary sealing components—gaskets, O‑rings and other seals—so you won’t need to source additional parts for a standard replacement. Installation difficulty depends on vehicle make and model; for many installations, basic mechanical skills and common tools are sufficient, but some models may require removal of ancillary components for access.

• Includes gaskets, O‑rings, and seals for a complete swap
• Fit‑type: Vehicle specific — confirm OEM cross‑reference before ordering
• Installation note: Some vehicles require additional disassembly for access

How does this ACDelco Gold pump compare to the original equipment part?

ACDelco Gold pumps are designed to meet OE standards for fit, form, and function, offering a balance of durability and price compared with factory parts. Components such as coated seals and tested housings aim to deliver leak‑resistant performance similar to the original unit while using aftermarket manufacturing processes.

• Engineered to OEM dimensions for correct fitment
• Tested for leak‑free operation and longevity
• Premium aftermarket option positioned between value and OE lines

Who is this for? The ACDelco Gold 252‑822 (89036357) water pump is intended for vehicle owners, DIY mechanics, and professional shops looking for a premium aftermarket replacement that closely follows original equipment specifications. It’s well suited for those maintaining or restoring mid‑2000s GM trucks and SUVs who want a complete, tested pump kit with included seals for a clean installation and reliable coolant management.