A-NAFTULY HVAC Blower Motor Resistor Kit with Harness — 89019100 Direct-Fit for GM Trucks & SUVs, Restores Fan Speeds

The A-NAFTULY 89019100 HVAC Blower Motor Resistor Kit with Harness restores correct HVAC fan speeds by replacing the failed blower resistor assembly on compatible GM vehicles.

If your vehicle’s HVAC blower only runs on one speed, doesn’t run at all, or behaves inconsistently, the root cause is often a worn blower motor resistor or a damaged harness connection. This A-NAFTULY kit is designed as a direct-fit replacement for manual AC systems on a range of GM SUVs and trucks from the early 2000s, supplying the resistor module and matching wiring harness to simplify installation and return dependable fan control.

Which vehicles and OE numbers are supported by this resistor kit?

This kit fits many GM models that used manual HVAC controls. It corresponds to several OEM part numbers, so confirm the OE on your original resistor before ordering. Compatible models include Trailblazer, Envoy, Envoy XL/XUV, Rainier, Jimmy, Ascender, and Bravada from model years listed below.

• Common OE cross-references: 89019100, 15862656, 1581772, RU-377, 973-008, 15415789, 89018439, 89018604.
• Vehicle coverage: 2002–2009 Chevy Trailblazer & Trailblazer EXT, 2002–2006 GMC Envoy/Envoy XL, 2004–2005 Envoy XUV, 2004–2007 Buick Rainier, 2002–2005 GMC Jimmy, 2003–2008 Isuzu Ascender, 2002–2004 Oldsmobile Bravada.
• Designed for manual (non-automatic) AC control systems only.

How does this replacement improve HVAC performance?

When a blower resistor fails, the HVAC fan may be stuck on a single speed, run intermittently, or stop altogether. Installing this resistor module and harness reestablishes proper electrical pathways so the blower motor can respond to the fan-speed selector again. Restored fan control improves cabin comfort and reduces strain on the blower motor.

• Replaces the faulty resistor that interrupts variable fan-speed control.
• Includes a matching harness to ensure reliable electrical connection.
• Designed to meet or exceed OEM durability and material standards.

Is installation difficult and what tools do I need?

Installation is straightforward and generally requires only basic hand tools. The resistor module is typically mounted on the lower passenger side of the HVAC housing; removing a few screws and unplugging the old connector is all that’s needed. No specialized training is required, making it a practical DIY repair for many owners.

• Typical steps: remove screws, unplug old resistor, plug in new harness, secure new module.
• Tools commonly used: screwdriver or socket set, and possibly trim tools to access the housing panel.
• Estimated time: often under an hour for experienced DIYers.

What does the kit include and what warranty/support exists?

The package contains one complete A-NAFTULY AC blower motor resistor kit with harness, ready to install as a direct replacement. A-NAFTULY stands behind the product with an 18-month warranty and 24/7 customer support to help with fitment or troubleshooting. If you encounter fit or function issues, contact customer service for assistance or replacement.

• Contents: 1 x blower motor resistor assembly with matching harness.
• Warranty: 18-month limited coverage from A-NAFTULY.
• Support: around-the-clock customer service for installation and part questions.

Who is this for: This A-NAFTULY 89019100 blower motor resistor kit is aimed at owners and mechanics servicing early-2000s GM SUVs and trucks with manual AC controls who need a dependable, OEM-style replacement. It’s suited to DIY installers wanting a direct-fit swap and professional shops that require a durable, warrantied part to restore HVAC fan speed control.