Location of the air bag sensor module for a 2005 Cadillac CTS

You find a local auto electrician, he connects his pro grade scan tool computer and you take him for a ride. The data from all the sensors and modules will tell him what the problem is and what needs replacing.

The information is contained in the owner's manual under door modules heading and is it starts on page 5-104 0f the owner's manual. I have provided a link to the owner manual below. https://my.gm.com/content/dam/gmownercenter/gmna/dynamic/manuals/2005/cadillac/cts/2005_cadillac_cts_owners.pdf

On a Buick, it is located on top of the fuel tank. It is set into the module that contains the fuel pump assembly. If you have an access panel under the rear seat or inside the trunk area, whereby you can get to and change the fuel pump assembly, you should be able to remove the access panel and see the sensor where it sits in the fuel pump module or housing.

The air bag fuse is located Fuse Block - Right Rear In the passenger compartment, under the right side of the rear seat. SIR fuse 10amp !

There are no bolts ! it takes a special tool , there are spring loaded Fasteners .
Pull the handle of the air bag tool away from the instrument panel (I/P) releasing one of the spring loaded fasteners.
Steering Wheel Inflatable Restraint Module Replacement
Tools Required J 44298 Driver Air Bag Removal Tool
Removal Procedure
Caution: Refer to SIR Inflator Module Handling and Storage Caution in the Preface section.
Caution: Refer to SIR Caution in the Preface section.




Caution: A deployed dual stage inflator module will look the same whether one or both stages were used. Always assume a deployed dual stage inflator module has an active stage 2. Improper handling or servicing can activate the inflator module and cause personal injury.

1. Disable the SIR system. Refer to SIR Disabling and Enabling .
2. On the back side of the steering wheel are 3 openings for removing the steering wheel module.
3. Adjust and install J 44298 into 1 of the holes.
Important: Seat the air bag removal tool all the way in to perform properly.

4. Pull the handle of the air bag tool away from the instrument panel (I/P) releasing one of the spring loaded fasteners.
5. Repeat this step for the other 2 fasteners.
6. Pull the inflatable restraint module gently away from the steering wheel.
   
   
7. 
Important: Note the wire routing positions on the steering wheel module connectors, the redundant control routing positions, and the horn wire routing positions for the correct assembly.

8. Remove the connector position assurance (CPA) (4) and the electrical connector from the steering wheel module.
9. Remove the horn contact lead (2) from the steering column cam tower.
10. Remove the steering wheel module (5

On the gas pedal assy

Not the problem

Move on to other issues

Need a scan tool to check modules

Locations is what i believe your asking .
1 - Inflatable Restraint Front End Discriminating Sensor
2 - Inflatable Restraint Front End Discriminating Sensor Connector
3 - Inflatable Restraint Side Impact Sensor - Passenger (Driver Similar)
4 - Inflatable Restraint Side Impact Sensor - Passenger Connector (Driver Similar)


Engine compartment and center pillar post between both doors

First, read the codes from the computer and reset them all. If the light stays on, you will need to replace the airbag module. I bought a used module pretty cheap, and it worked fine.

There is a module in the right seat (front, center)