A Guide to the 2007-2013 Chevrolet Avalanche Power Steering Pump

Is Your Avalanche's Power Steering Pump Failing?

The power steering pump on the 2007-2013 Avalanche is a hard-working hydraulic part, but it won't last forever. When it starts to wear out, it usually provides clear warning signs. Ignoring these symptoms can lead to a complete loss of power steering assist, making the truck very difficult and unsafe to control.

Common Failure Symptoms:

• Whining or Groaning Noises: This is the most common sign. You'll hear a distinct whining noise from the engine bay that gets louder when you turn the steering wheel. The pitch of the whine often changes with engine speed. This is usually caused by low fluid, air in the system, or internal pump wear.
• Stiff or Heavy Steering: The steering wheel becomes difficult to turn, requiring much more effort than usual. This is most noticeable at low speeds, like in parking lots.
• Fluid Leaks: You may find puddles of reddish-brown power steering fluid under the front of your truck. Leaks can come from the pump itself, the reservoir, or the connecting hoses.
• Slow Steering Response: If the steering feels delayed or less responsive than normal, it can be a sign that the pump is not generating enough pressure.

Known Issues for the 2007-2013 Avalanche

General Motors has issued several Technical Service Bulletins (TSBs) related to the power steering system on this generation of trucks. These are not recalls, but instructions for dealers to fix common complaints.

• TSB 13-02-32-001G: This bulletin addresses noise and fluid leaks that happen in extremely cold weather (below -31°F / -35°C). The standard power steering fluid can thicken, causing pressure spikes that damage the pump or hoses. The official fix is to replace any damaged parts and refill the system with a special cold-weather fluid (Pentosin CHF202).
• TSB 10-02-32-002A: For vehicles built before August 2010, this TSB addresses a whine or moan noise at low speeds. If the noise persists after checking the fluid and bleeding the system, GM recommends replacing the original pump with an updated 12-vane pump (GM Part No. 20954812) for quieter operation.

Choosing the Right Aftermarket Pump

When shopping for a new aftermarket power steering pump, you'll find a wide range of brands and prices. Quality can vary significantly, especially between new and remanufactured parts.

OEM vs. Aftermarket Quality

For this specific generation of GM trucks, many professional mechanics and experienced owners recommend using a new OEM (Original Equipment Manufacturer) pump from GM if your budget allows. Aftermarket pumps, particularly remanufactured units, have a reputation for being inconsistent. While they come with warranties, the quality can be a "coin flip," and you may risk having to do the job more than once.

Aftermarket Brand Tiers

• Premium Aftermarket (e.g., some NEW units from reputable brands): These are newly manufactured parts, not rebuilt ones. They often offer a good balance of quality and price, though they cost more than remanufactured options.
• Standard Aftermarket / Remanufactured (e.g., Cardone, BBB Industries): This is the most common and budget-friendly category. Brands like Cardone and BBB Industries rebuild original pump cores with new seals and tested components. However, owner reviews are very mixed; some pumps work for years, while others fail quickly or are defective out of the box. If you choose this route, be prepared for the possibility of a warranty exchange.
• Economy (e.g., 'Replacement' brand, various online marketplace brands): These are typically the cheapest options available. They may be new or remanufactured, but quality control can be a significant concern. These are best for those on a tight budget who are willing to take a risk on longevity.

Cost to Replace a 2007-2013 Avalanche Power Steering Pump

The total cost will depend on the parts you choose and whether you do the work yourself or hire a professional mechanic.

Frequently Asked Questions (FAQ)