If the spare is under the vehicle:
1. Locate the spare tire: It's usually secured under the rear of the vehicle. You'll likely need to lower the rear of the vehicle slightly. Some models use a winch-type system, while others might have a simple retaining strap or bolt.
2. Access the spare: This usually involves finding a release lever or handle, either located in the cargo area or under the vehicle itself. Consult your owner's manual for the exact location of the release mechanism. The manual will be very helpful here.
3. Lower the spare: If it's a winch system, carefully crank the handle to lower the spare. If it's a simple strap or bolt, release the mechanism holding the tire. The tire might be heavy, so be prepared.
4. Remove the spare: Once the spare is lowered, carefully remove it from its cradle.
If the spare is inside the vehicle (less common):
1. Locate the spare: This is typically in the cargo area, possibly under a cover or behind a panel.
2. Remove any retaining straps or mechanisms: This will vary depending on the specific model. Check your owner's manual.
3. Remove the spare: Carefully lift and remove the spare tire.
Important Considerations:
* Safety: Have someone help you if the spare is heavy. Always use jack stands for added safety if you are working under the vehicle. Never work under a vehicle supported only by a jack.
* Owner's Manual: Your owner's manual is the best resource for detailed instructions specific to your 1999 Tahoe. Consult it before attempting to remove the spare tire. Look for sections on "spare tire," "tire changing," or "roadside assistance."
* Tools: You may need tools like a wrench or ratchet to release the spare, depending on the securing mechanism.
If you can't find the release mechanism or are unsure about any step, it's best to consult a mechanic or your owner's manual. Attempting to remove the spare incorrectly could damage your vehicle.