One problem related to car stall has been reported for the 2003 Chevrolet C1500. The most recently reported issues are listed below.
The suburban would stall while waiting in drive thru lines. Several times. Dies while in gear, put in park and would then start up. Dealer could not find any problems. I knew I had gotten a bad tank of gas, 2 months earlier. So we tried fuel injections, etc. . . The suburban would die and would be towed back to the dealer. They decided I needed to replace the fuel module. $800 later and it was still happening. The dealer was driving my car more than I. Putting miles on the car and GMC decided I had too many miles on the vehicle to do anything about it. Now, it dies while driving the vehicle. One year later and the problem still exists and no one has figured it out. I am scared to drive the vehicle and mostly dissatisfied that I spent 45k on a vehicle and then when it fails no one knows how to fix it. They just want you to buy a new vehicle.