On my 2006 Chevrolet Colorado, the evaporation solenoid (assembly), which is mounted on the right end of the evaporation canister, is only secured on one end. There is loose play in the mount. The evaporation solenoid can move up and down, every time you hit a rough place in the road. I checked several other new 2006 Colorados and one new 2007 Colorado. They were all loose. The 2007 was the worse one. The solenoid is connected to the canister with plastic tubing. The canister is connected with plastic tubing to the fuel tank and engine. My fear is that the constant moving up and down could damage the solenoid valve or cause the tubing connected to it to split. Releasing gasoline fumes under the truck while the engine is not running, and putting unfiltered air into engine-fuel tank when it is running. My dealer is aware of the problem, but wants to "tie the solenoid assembly down." I feel that this is a factory problem and should be addressed by General Motors, and not shifted back to the dealer. I will in the meantime examine other new 2007 Colorados to see if the problem has already been corrected. If it has, I feel that I deserve a recall. P.S. the evaporation canister and solenoid is mounted under the truck bed, in front of the spare tire, and behind the rear axle, not too far from the fuel tank. The flopping up and down produces clunking noises, which is not good, because I know what it is.

- Sumter, SC, USA