It happens to all of us I know. Tahoe was dead on my driveway yesterday morning. It's 7 years old and I got the click click sound when trying to start. Walked to my service station and told them the deal. They came and checked it out and said I needed a new starter. I thought it was the battery but OK, go ahead and do the job. Went to pick it up late last night (10ish) and got in and click click. (Lights came on but the automatic back tailgate would not come up.) Looks to me its a battery. The starter cost $418.00 and looks like I didn't need it. I have no problem paying for the starter but think they should deduct the labor charge. What do you think?