How to replace the auxiliary blower motor on Chevrolet Trailblazer?

A technician must start the auxiliary blower motor replacement process for TrailBlazer EXT and Envoy XL vehicles by dismounting the right rear quarter trim panel. You need to remove the retaining bolts that are attached to the HVAC module-auxiliary and its retaining nuts underneath the vehicle. Before extracting the auxiliary blower motor from the HVAC module-auxiliary, disconnect the electrical connectors (3,4) and remove the blower motor screws. Install the blower motor-auxiliary by placing it onto the HVAC module-auxiliary then fasten with blower motor-auxiliary screws secured at 2 N.m (18 lb in). The process requires the HVAC module-auxiliary receiving its retaining bolts (3,4) along with electrical connector replacement followed by bolt tightness adjustment to 10 N.m (88 lb in). Reinstall the right rear quarter trim after placing and tightening the retaining nuts to the HVAC module-auxiliary under the vehicle to 10 N.m (88 lb in).

OEM Chevrolet Trailblazer Blower Motor

A/C Heater Blower Motor

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Chevrolet Trailblazer Blower Motor
Part Number: 89018747
$121.62 MSRP: $249.94
You Save: $128.32 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Motor, Blower (W/Impeller); HVAC Blower Motor; Blower Assembly; Fan & Motor; Motor, A/C Evaporator Blower; Motor, Heater Blower Motor
- Replaces: 52498916, 52484793
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2009 Chevrolet Trailblazer | Base, LS, LT, LTZ, North Face, SS | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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Chevrolet Trailblazer Blower Motor
Part Number: 88892974
$121.05 MSRP: $248.76
You Save: $127.71 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Motor Assembly, Auxiliary Blower; Motor, A/C Evaporator Blower; Motor, Heater Blower Motor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2007 Chevrolet Trailblazer | LS, LT, LTZ, North Face, SS | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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Chevrolet Trailblazer Blower Motor
Part Number: 42737329
$106.65 MSRP: $190.44
You Save: $83.79 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Motor Assembly-Blower; Motor, A/C Evaporator Blower
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Trailblazer | ACTIV, L, LS, LT, RS | 3 Cyl 1.2 L GAS, 3 Cyl 1.3 L GAS

Chevrolet Trailblazer Blower Motor

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Chevrolet Trailblazer Blower Motor Parts Questions & Experts Answers

Blower Motor
89018747
Q: How to replace the auxiliary blower motor on Chevrolet Trailblazer?
A: A technician must start the auxiliary blower motor replacement process for TrailBlazer EXT and Envoy XL vehicles by dismounting the right rear quarter trim panel. You need to remove the retaining bolts that are attached to the HVAC module-auxiliary and its retaining nuts underneath the vehicle. Before extracting the auxiliary blower motor from the HVAC module-auxiliary, disconnect the electrical connectors (3,4) and remove the blower motor screws. Install the blower motor-auxiliary by placing it onto the HVAC module-auxiliary then fasten with blower motor-auxiliary screws secured at 2 N.m (18 lb in). The process requires the HVAC module-auxiliary receiving its retaining bolts (3,4) along with electrical connector replacement followed by bolt tightness adjustment to 10 N.m (88 lb in). Reinstall the right rear quarter trim after placing and tightening the retaining nuts to the HVAC module-auxiliary under the vehicle to 10 N.m (88 lb in).

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