hard start

My 02 Chevy trailblazer ls 4.2 I6 started having starting issues 2 weeks ago. i was driving down the road and heard what sounded like something hit the bottom of the vehicle but didn't see anything, but once i got home i could smell a strong gas smell only towards the driver side rear tire. I...

Haven't found any postings with symptoms quite like this, hoping to get some ideas on what this could be.... '04 Envoy XL 4x4, I-6 with 105K miles (original owner): If the outside air temperature is 20 degrees F or colder, the vehicle will start FINE first thing in the morning. However, after...