One problem related to rear seat belt has been reported for the 2003 Chevrolet Tahoe. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Chevrolet Tahoe based on all problems reported for the 2003 Tahoe.
I had put my 6 year old son in the rear seat behind the driver, and when I went to fasten his seat belt around his booster seat the assembly that holds the seat belt in came completely off, it is a 4-5 inch bolt that screws into a mount at the bottom of the seat. It does not go back in, and the seat is now useless as there is no operable seatbelt.