2004 Chevrolet Colorado 3.5 Gas Smell From Vents

Had this 2004 Chevy Colorado come into the shop with a customer complaint of smelling raw gas fumes when he had his heater running.  He was worried gas was somehow entering into his vent system.

First step was to raise the hood and inspect for any leaking fuel components under the hood.  I had in mind a possible leaking injector, but instead found a leaking fuel pressure regulator, as you will see below.  You will notice the wet spot on the regulator where it had been leaking.

I replaced the faulty regulator with a new one.  There are a couple of torx bolts to remove along with the regulator from the fuel rail and a fuel line.  There are two o-rings that have to be replaced as well.

Finished the repair and no more raw gas smell coming from the HVAC vents.