New Design Blower Motor Speed Control Module Resistor for 2003-2006 GM Trucks and SUV’s

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APDTY 112822 Blower Motor Resistor Speed Control Upgrade Module Auto Temp Control 2003-2009 Hummer H2 04-07 Buick Rainier 2002-2009 Chevrolet Trailblazer or GMC Envoy Olds Bravada 15-80655, 19329838

Features: Upgrade Replacement For The Now Discontinued GM 15-80655, 19329838, Re-wiring instructions included, Allows Repair Of Missing Blower Motor Speeds, Allows Repair OF Blower That Stays Running On Continuously

New From: $65.00 USD In Stock

Even the most venerable vehicles can have some minor flaws when they are engineered and designed. One such system turns out to be the blower motor speed controller for millions of GM trucks and SUV’s. This particular problem only applies to the vehicles with automatic temperature control systems.

This information applies to the Following Vehicles: 2003-2006 Silverado/Sierra,  2003-2008 Chevrolet Trailblazer, Buick Rainier, GMC Envoy, 2003-2006  Escalade, Tahoe, Yukon, Suburban, Avalanche

Initial failure symptoms usually consist of one or more of the following issues:

  • Blower Motor Stays Running Even When Truck Is Off
  • Blower Motor Doesn’t Work Consistently, (Will turn on randomly)
  • Blower Motor Runs at Wrong Fan Speed
  • Blower Motor Doesn’t work at all

If you have the Automatic Temperature Control and exhibit any of the above symptoms, suspect the blower module to be the issue. The original design had a small three pin connector which, as it turns out, is not sufficient to draw the amount of electrical current that flows through the module and into the blower motor. One cause of failure was from these pins heating up repeatedly and eventually causing stress to the module which would create a failure.


Old Style, Problem Prone Blower Module

GM And AC-Delco have completely redesigned the original blower control module which now includes a heavier duty connector. It is easy to install and just requires cutting off the old three pin connector and splicing together three wires. We suggest soldering these wires together to create a permanent good connection, but butt-crimp connectors can also be used. The newly designed module and connector can be seen below.

New Blower Module

New Design Blower Resistor / Control Module

Amazon has the module for sale, it is a very economical repair for a very frustrating and inconvenient problem.

One Important note, The Manual Temperature Control vehicles use a completely different part, they use a blower resistor which actually has 7-pins and has entirely different symptoms.


ASE Certified Technician

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7 Responses

  1. Joel says:

    How to relearn, reset, or calibrate the HVAC system on a Trailblazer, Envoy, Rainier, 9-7x without a Scanner or GM Tech 2.

    A relearn or re-calibrate procedure is required on many of these vehicles after the blower resistor power module is replaced or if power is removed such as a battery replacement. If you install this unit and then get no power to the climate control module or no fan speeds at all. The reset procedure most likely needs to be completed. Follow these steps:
    1. Confirm part has been installed and re-wired properly. A tip during install is to splice one single wire at a time so you don’t cross a wire.
    2. After install, verify the dash mounted climate control module has no power.
    3. If no power, remove the HVAC climate control fuse #39 form the fuse panel under the 2nd row passenger seat. Wait 2 minutes
    4. Re-install the fuses and go to the driver seat
    5. Place the key in the ignition and turn to the on position (Do not start the engine). Do not touch any climate controls
    6. Wait at 2 minutes with the key in the on position (this is when the reset procedure happens).
    7. After waiting 1 minute, remove the key, then re-insert the key and start the engine.
    8. The climate control head should now activate and the blower should start working normally.

  2. f h boyd says:

    What is the part number of the new design blower motor speed control module resistor for gm trucks (2003 avalanche).and how do I order one?

  3. Katy says:

    My auto parts store is telling me that I need an additional wiring harness to transition from the new five-pin module to the three wires in the car (from which you’re suggesting cutting the connector). Is that necessary, or do the three bare-ended wires of the wiring harness that comes with new module (pictured above) just get wired to the three wires in the car, with the two-wire connector on the new module snapping in where the old one did? AND if that’s the case, will the instructions for connecting the wires be clear (eg, which wire gets connected to which wire)? I hope that question made sense.

  4. Hussain says:

    How i replace old rsistoer to new

  5. Chris says:

    Every symptom listed here was happening with my wifes 2005 Envoy SVT. I picked up the part at local auto parts store for $100. If you have the manual temperature console you get lucky with only a $30 part. all you need to this repair is a 7mm socket to remove the bottom panel beneath the glove box and a 7/32 socket to remove two screws that hold resistor in place. open glove box with release clip all the way down and disconnect clip running to blower. The wire for this went up behind blower and around, but the replacement harness wire is not nearly long enough to do this, but you can connect it from underneath blower. I did have to splice the wires to the 3 that were connected to the harness that the new resistor doesn’t have. Very easy, power, ground and a purple signal wire. Crimp and tape these together. when you put new new resistor in be sure to plug the clip into the blower first and then slip harness into resistor. There is literally no slack at all between harness and blower clip connector, and harness should be put on in this order to connect. Took me about 45 minutes. Wife is happy!

  6. Jeff S says:

    Thanks for the info but one question. I’ve got a 05 Yukon with 3 wires. New model has a 7 wire harness. Any Idea which to hook to which?
    Old unit is A) Red Wire, B) Purple -small wire C) Black wire.

    New unit is black and white wires A) B) C) D) E) F) G) Gave matching a,b,c a shot -heated up the module -hope I didn’t burn it up…

    Any help would be appreciated.

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