How to replace the rear body control module (BCM) in the end gate on 2004 Buick Rainier?

First take out the trim panel from the end gate to reach the rear body control module (BCM). Locate and unscrew the two fasteners holding the rear BCM to the end gate then detach all its electrical connections. Insert the new rear BCM into the end gate and link all electrical connectors to the module. Secure the rear BCM using its two mounting screws when you put them back into position at the end gate slot. Tighten them to 2.5 N.m (22 lb in). Refasten the trim panel into its original position on the end gate.

OEM 2004 Buick Rainier Body Control Module

BCM

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2004 Buick Rainier Body Control Module Part Number: 19370406
$172.07 MSRP: $321.16
You Save: $149.09 (47%)
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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
- Item Weight: 10.10 Pounds
- Item Dimensions: 6.2 x 3.1 x 10.6 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 19370406
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 Buick Rainier Submodels:
- CXL, CXL Plus | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS

2004 Buick Rainier Body Control Module

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2004 Buick Rainier Body Control Module Parts and Q&A

Q: How to replace the rear body control module (BCM) in the end gate on 2004 Buick Rainier?
A: First take out the trim panel from the end gate to reach the rear body control module (BCM). Locate and unscrew the two fasteners holding the rear BCM to the end gate then detach all its electrical connections. Insert the new rear BCM into the end gate and link all electrical connectors to the module. Secure the rear BCM using its two mounting screws when you put them back into position at the end gate slot. Tighten them to 2.5 N.m (22 lb in). Refasten the trim panel into its original position on the end gate.