One problem related to front air bag has been reported for the 2003 GMC Envoy. The most recently reported issues are listed below.
The check engine light came on and I smelled gas. The dealer informed me that there was a crack between gas tank and the filler neck. The fuel tank was never work on or removed before. Because I did not have the extend warranty and had 56,00 mile there was nothing they could do for me. They also told me that this was a rare thing but they are still not wanting to assist me in the repair which will cost a $1,000.