Here's why:
* Chevy Tahoes were offered in both 2WD and 4WD configurations in 2003.
* To know for sure, you need more information:
* Look at the vehicle's VIN (Vehicle Identification Number). The VIN will reveal the specific drivetrain configuration.
* Check the owner's manual or the vehicle's paperwork.
* Look under the vehicle. 4WD models will have a transfer case and a front driveshaft, while 2WD models will not.
Let me know if you have the VIN or other information, and I can help you determine if the Tahoe is 2WD or 4WD.