How to replace the Body Control Module (BCM) on Chevrolet Trailblazer?

Start by closing the Ignition Switch before working with bcm connectors. Disconnect the 40-way body wiring extension then move to the 32-way tan connector and end with the 24-way gray electrical connector. Realign the 24-way gray connector first followed by the 32-way tan connector and finally attach the 40-way body wiring extension. The Body Control Module can find electrical issues even with the power off and protects battery power by maintaining light operation but does not locate electrical problems in parts it controls. Activate the power down now mode through the scan tool to find out any remaining power use on those circuits. Do not contact electrical contacts on the body wiring extension or try to open the bcm housing because both remain non-serviceable components that must be replaced as a whole unit. Start your work with the negative Battery Cable's removal. For chevrolet trailblazer ext and gmc envoy xl installations remove both second-row seats while chevrolet trailblazer, gmc envoy, and oldsmobile bravada owners should move the left second seat into cargo mode. You can take out the edgroom electrical box panel to find and release the bcm sliding retainer. Pull it toward you to 40mm until it hits its stop. We disconnect the three electrical connectors which include the 40-way body wiring extension, 32-way tan connector, and 24-way gray connector from the Body Control Module. Pull the bcm upwards out of the rear electrical center seat. Fit the bcm slots first to the rear electrical center then push it down to install. Plug in the 24-way gray electrical connector first followed by the 32-way tan electrical connector then the 40-way body wiring extension. Press the sliding latch to connect the bcm to the rear electrical center by moving it towards the center as the locking post locks into place. Reinstall the rear electrical cover and choose either passenger positioning for the left second seat (when needed) or put back the left second row seat for chevrolet trailblazer ext and gmc envoy xl models. Close the negative Battery Cable connection while programming any new bcm functions.

OEM Chevrolet Trailblazer Body Control Module

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11 Body Control Modules found

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Chevrolet Trailblazer Body Control Module
Part Number: 19370406
$114.68 MSRP: $230.80
You Save: $116.12 (51%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Module Assembly, Body Control; Module, Body Multi Function Electric Computer; Module, Door Lock Remote Control Inside
- Replaces: 09352135, 15065293, 15122670, 9352135, 15114669, 19369360
- 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 Control Module
Part Number: 22940857
$205.70 MSRP: $466.82
You Save: $261.12 (56%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Module Assembly-Accessory & Lift Gate Control; Module; Module, Rear Compartment Lid Release Or Ajar; Module, Door And End Gate Electrical
- Replaces: 23275389, 22848710
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2022 Chevrolet Trailblazer | ACTIV, L, LS, LT, RS | 3 Cyl 1.2 L GAS, 3 Cyl 1.3 L GAS
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Chevrolet Trailblazer Control Module, Rear
Part Number: 42581710
$30.43 MSRP: $57.15
You Save: $26.72 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Module Assembly-Rear Closure Hands Free; Module
- Position: Rear
- Replaced by: 85039379
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Trailblazer | ACTIV, LT, RS | 3 Cyl 1.2 L GAS, 3 Cyl 1.3 L GAS
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Chevrolet Trailblazer Body Control Module, Rear
Part Number: 25846782
$128.50 MSRP: $261.00
You Save: $132.50 (51%)
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Product Specifications
- Other Name: Module Assembly-Rear Body Control; Control Module; Module, Body Multi Function Electric Computer
- Position: Rear
- Replaces: 10381268, 15198246, 15852162, 15852165, 15869971, 15092007, 15253719, 15071153, 15135616, 15180030, 15204779
- 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 Receiver
Part Number: 25909995
$230.43 MSRP: $344.43
You Save: $114.00 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Module Assembly-Communication Interface (W/Mobile Telephone Transceiver); Module, Mobile Telephone Radio
- Replaces: 15934200, 15270941, 25826221
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Trailblazer | LS, LT, 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 Control Module
Part Number: 13520524
$28.08 MSRP: $50.81
You Save: $22.73 (45%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Module Assembly-Theft Deterrent; Ignition Immobilizer Module; Antitheft Module; Module,Theft Deterrent Or Front/Rear/Side/Intake Object
- 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
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Chevrolet Trailblazer Control Module
Part Number: 13542838
$58.23 MSRP: $103.98
You Save: $45.75 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Module Assembly-Serial Data Gateway; Module; Module, Body Multi Function Electric Computer
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2023-2024 Chevrolet Trailblazer | ACTIV, LS, LT, RS | 3 Cyl 1.2 L GAS, 3 Cyl 1.3 L GAS
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Chevrolet Trailblazer Body Control Module
Part Number: 13534192
$111.47 MSRP: $226.40
You Save: $114.93 (51%)
ADD TO CART
Product Specifications
- Other Name: Module Assembly-Body Control; Module; Module, Body Multi Function Electric Computer; Module, Door Electric And Vacuum Locks
- Replaces: 13518593, 13532662
- 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
View related parts
Chevrolet Trailblazer Control Unit
Part Number: 15835455
Product Specifications
- Other Name: Module Assembly-Communication Interface (W/Mobile Telephone Transceiver); Receiver; Transceiver; Module, Mobile Telephone Radio
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008 Chevrolet Trailblazer | Base, LT, SS | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
View related parts
Chevrolet Trailblazer Antitheft Module
Part Number: 12213850
Product Specifications
- Other Name: Module, Theft Deterrent; Module,Theft Deterrent Or Front/Rear/Side/Intake Object
- 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
View related parts
Chevrolet Trailblazer Control Unit
Part Number: 22829370
$259.56 MSRP: $387.97
You Save: $128.41 (34%)
Product Specifications
- Other Name: Module, Mobile Telephone Radio; Receiver; Transceiver
- Replaces: 20782642, 25965168, 20830942
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009 Chevrolet Trailblazer | LT, SS | 6 Cyl 4.2 L GAS, 8 Cyl 6.0 L GAS

Chevrolet Trailblazer Body Control Module

Our website offers an extensive catalog of genuine Chevrolet Trailblazer Body Control Module at unbeatable prices. Every OEM Chevrolet Trailblazer Body Control Module comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!

Chevrolet Trailblazer Body Control Module Parts Questions & Experts Answers

Body Control Module
19370406
Q: How to replace the Body Control Module (BCM) on Chevrolet Trailblazer?
A: Start by closing the Ignition Switch before working with bcm connectors. Disconnect the 40-way body wiring extension then move to the 32-way tan connector and end with the 24-way gray electrical connector. Realign the 24-way gray connector first followed by the 32-way tan connector and finally attach the 40-way body wiring extension. The Body Control Module can find electrical issues even with the power off and protects battery power by maintaining light operation but does not locate electrical problems in parts it controls. Activate the power down now mode through the scan tool to find out any remaining power use on those circuits. Do not contact electrical contacts on the body wiring extension or try to open the bcm housing because both remain non-serviceable components that must be replaced as a whole unit. Start your work with the negative Battery Cable's removal. For chevrolet trailblazer ext and gmc envoy xl installations remove both second-row seats while chevrolet trailblazer, gmc envoy, and oldsmobile bravada owners should move the left second seat into cargo mode. You can take out the edgroom electrical box panel to find and release the bcm sliding retainer. Pull it toward you to 40mm until it hits its stop. We disconnect the three electrical connectors which include the 40-way body wiring extension, 32-way tan connector, and 24-way gray connector from the Body Control Module. Pull the bcm upwards out of the rear electrical center seat. Fit the bcm slots first to the rear electrical center then push it down to install. Plug in the 24-way gray electrical connector first followed by the 32-way tan electrical connector then the 40-way body wiring extension. Press the sliding latch to connect the bcm to the rear electrical center by moving it towards the center as the locking post locks into place. Reinstall the rear electrical cover and choose either passenger positioning for the left second seat (when needed) or put back the left second row seat for chevrolet trailblazer ext and gmc envoy xl models. Close the negative Battery Cable connection while programming any new bcm functions.

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