rjenvision

Hello all! Can anyone assist me in a issue im having with the dealership? I just bought a used 03 Chevy Tahoe LT 2weeks ago and I returned it to the dealer because the shift indicator light was barely visible and my passenger air bag light was on! They said they fixed the air bag light but are giving me the run around on the indicator light. they have had my vehicle for 5 days now. the service department mgr told me its because the vehicle has close to 100k on it. I told him thats un acceptable and they need to fix it. Can annyone offer some advice on handling this problem?