1. Preparation:
* Safety First: Disconnect the negative terminal of your car battery to prevent electrical shorts.
* Gather Tools: You'll need a socket set (various sizes), a ratchet, extensions, possibly a wrench, and possibly a trim panel removal tool to avoid damaging the interior. A shop manual specific to your 1998 Bravada will be incredibly helpful.
* Consult a Repair Manual: A Haynes or Chilton manual for your vehicle year and model will provide detailed diagrams and instructions specific to your Bravada. This is highly recommended.
2. Accessing the Wiper Motor:
* Interior Access (Most Likely): The rear wiper motor on many vehicles, including some Bravadas, is accessed from inside the vehicle. This usually involves removing the interior trim panels around the rear hatch or tailgate. You'll likely need to carefully pry off panels using trim tools, being mindful not to break any clips.
* Exterior Access (Less Likely, but Possible): Some Bravadas might require accessing the motor from the outside, potentially involving removing the rear hatch panel or other exterior components.
3. Disconnecting the Motor:
* Electrical Connector: Carefully disconnect the electrical connector from the wiper motor. Take a picture or make a note of how it connects for reassembly.
* Linkage: Disconnect the linkage connecting the motor to the wiper arm. This often involves removing a retaining clip or bolt.
4. Removing the Motor:
* Bolts/Fasteners: The motor is usually held in place by several bolts or screws. Locate and carefully remove these fasteners.
* Removal: Once the fasteners are removed, gently remove the motor from its housing.
5. Installing the New Motor:
* Reverse Process: Install the new motor by reversing the removal steps.
* Linkage: Reattach the linkage, ensuring it's correctly aligned.
* Electrical Connector: Carefully reconnect the electrical connector.
* Testing: Reconnect the battery and test the rear wiper.
Important Considerations:
* Rust and Corrosion: Parts in the area might be rusty or corroded, making removal difficult. Penetrating oil can help loosen things up.
* Clips and Fasteners: Be extremely careful when removing interior trim panels to avoid breaking the plastic clips.
* Photography: Take pictures at each step of the disassembly process. This will be invaluable when reassembling.
* Wiring: If the wiring looks damaged or brittle, consider replacing it as well.
If you are not comfortable working on your vehicle yourself, it's strongly recommended that you take your Bravada to a qualified mechanic. This is a more involved repair than a simple bulb change, and improper installation could damage other components. The cost of a professional repair might be less than the cost of damaging your vehicle attempting a DIY repair.
