AA Ignition Lower HVAC Blower Motor Resistor for GM Vehicles - Direct-Fit, Lifetime Warranty (Replaces 22807122/15305077)

AA Ignition Lower HVAC blower motor resistor is a direct-fit replacement part that restores multi-speed operation to the vehicle’s heating and air-conditioning blower fan.

If your blower only runs on high, is stuck at a single speed, or has stopped working altogether, a failed lower blower motor resistor is a common cause. This aftermarket replacement is engineered to match factory fit and function for a range of GM models — including Rainier, Escalade, Avalanche and Silverado — and cross-references OEM numbers 22807122 and 15305077 for quick verification. It arrives ready to plug in with no cutting or splicing required and includes a lifetime warranty from AA Ignition.

How will this resistor fix my blower that only works on high?

A faulty resistor often loses its lower-speed tap points while the high-speed circuit remains intact. Installing this lower blower motor resistor restores the electrical resistance network that allows the fan to run at all selected speeds again.

• Replaces the damaged resistor element that disables low and mid fan speeds.
• Direct-fit design uses factory-style mounting and connector for quick swap.
• Heat-rated components ensure consistent resistance under HVAC loads.

Which vehicles and part numbers does this unit replace?

This AA Ignition resistor is built to fit multiple GM models from the early 2000s. Check your original part number or the vehicle compatibility list to confirm fit before ordering.

• Common replacements: OEM 22807122, 15305077, and aftermarket 973409 cross-reference.
• Compatible with Buick Rainier (2004–2006), Cadillac Escalade variants (2003–2006), Chevrolet Avalanche and Silverado (2003–2006), and more.
• Match the number printed on your existing part to ensure exact interchangeability.

Is this an OEM part and what quality can I expect?

While not a factory-branded component, this resistor is manufactured to meet or exceed original equipment specifications. Materials and finish are chosen for durability and reliable thermal performance to deliver long service life when installed correctly.

• Engineered for OEM-style fit, function, and connector compatibility.
• Built with a heat-rated resistor element and factory-style harness where applicable.
• Backed by AA Ignition’s lifetime warranty for added purchase confidence.

How do I install and what else should I check during replacement?

Installation is plug-and-play for most listed vehicles; the unit secures to the HVAC housing and connects via the factory harness. While replacing the resistor, inspect the blower motor and housing for debris or damage, because a failing motor can overload resistors and cause repeated failures.

• Typical install requires basic hand tools and removal of the lower dash or kick panel access point.
• Verify connector pins are clean and free of corrosion before mating the new part.
• Inspect the blower motor and wheel for signs of wear, binding, or excessive current draw.

Who is this for: This lower HVAC blower motor resistor is aimed at DIY mechanics, independent repair shops, and owners of compatible Buick, Cadillac, Chevrolet, GMC or Oldsmobile models from the early 2000s who need a reliable, cost-effective replacement. If you want a direct-fit, heat-rated replacement that cross-references OEM part numbers 22807122 and 15305077 and includes a lifetime warranty, this AA Ignition unit offers an easy route to restoring full blower speed control. Always confirm vehicle compatibility and part number before purchase.