chevy hhr 2007 can not find the evap canister purge vale under the hood
i have a diagram but still can not find it. are there any pics ?

 

It's the black box attached to the driver side of the head under the air filter. 2 hard black hoses and 1 electrical connector. One of the hoses connects to the intake manifold the other disappears under the car near the firewall.

 

Welcome to the site, why the need to find the valve? A code?

 

Oldblue- getting a PO455 i replaced the gas cap, and the valve in the rear need to try the one by the engine. dealer want around $200 just to check it out.

 

P0455, not pO455 - important difference if you try and search for it here or via Google.

 

Then that will not be the problem.
OBD-II Trouble Code: P0455 Evaporative Emission Control System Leak Detected (no purge flow or large leak)

 

Read the post that Don provided, hope it helps you resolve your issue

 

As far as location, I think you're referencing the valve at the canister, back by the fuel tank.

2007 Chevrolet HHR VAPOR CANISTER & RELATED PARTS

 

Kersh you are falling for a GM nomenclature joke.

Canister PURGE valve: under hood. Canister VENT valve: near gas tank.

 

was talking the one under the hood i have located it