One problem related to other fuel system tank assembly has been reported for the 2010 Cadillac STS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Cadillac STS based on all problems reported for the 2010 STS.
Fuel leaking onto exhaust system had to tow to dealer due to freighting experience of possible fire and injury to myself and others. Dealer stated cost would be a min. 1000 dollars would have to remove fuel tank to access problem and stated a two day wait on parts to repair . . Car has 16000 mi on it. What a triaminic experience.