This is not a DIY job for most people. It's strongly recommended you take your Tahoe to a qualified mechanic or a certified body shop. They have the proper tools, training, and safety equipment.
However, if you're determined to proceed (at your own risk!), here's a *general* outline. This is not a comprehensive guide, and specific steps may vary:
WARNING: Before you begin, disconnect the negative battery cable and wait at least 10 minutes to allow the airbag system to fully discharge. This is crucial to prevent accidental deployment.
1. Gather Tools and Equipment: You'll need specialized tools, including airbag deployment wrenches, torque wrenches, and potentially a scan tool to clear any airbag system codes after installation. You'll also need a service manual specific to your 1999 Tahoe. This manual will provide detailed diagrams and torque specifications which are critical.
2. Remove the Passenger-Side Dash Panel: This typically involves removing various trim pieces, screws, and possibly disconnecting electrical connectors. Refer to your service manual for the exact procedure.
3. Access the Airbag Module: Once the dash panel is removed, you'll locate the airbag module. This is often behind the glove box or integrated into the dashboard.
4. Disconnect the Airbag Connector: Carefully disconnect the electrical connector from the airbag module using the proper tool. This is usually a special plastic tool to prevent accidental deployment.
5. Remove the Airbag: This step is particularly dangerous. The airbag is held in place by retaining bolts or clips. Use the appropriate tools to carefully remove the airbag. Avoid touching the explosive charge in the airbag module.
6. Install the New Airbag: Carefully install the new airbag, ensuring it's properly seated and secured with the correct torque specifications (found in your service manual).
7. Reconnect the Airbag Connector: Reconnect the electrical connector, making sure it's securely fastened.
8. Reassemble the Dash Panel: Carefully reassemble the dash panel, following the reverse order of disassembly. Again, refer to your service manual.
9. Clear Airbag Codes (if necessary): Connect a scan tool to clear any diagnostic trouble codes (DTCs) related to the airbag system. This is important because the car's computer may register an error.
10. Reconnect the Battery Cable: Reconnect the negative battery cable.
Again, this is a highly simplified overview. Attempting this repair without the proper knowledge and tools is extremely dangerous and could lead to serious injury or death. Use a service manual specific to your 1999 Chevy Tahoe and consult a qualified professional. The cost of professional repair is far less than the cost of potential injury or a lawsuit.
