My 2007 Hummer is a blood hound

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Mar 1, 2013 | 03:22 AM

#11

ultraclassic01

Thread Starter

Member

Joined: Oct 2011

Posts: 92

From: Southern Illinois

Quote:

Originally Posted by Doc Olds

"Throttle Body". That is a vacuum source for the EVAP, just follow the black hose connected to the front top to where it goes around and under the intake manifold to the control valve, from there down under the truck to the fuel tank. If it come loose, gets cracked, or chafes a pin hole, that is your problem.

They have been known to get dry and crack, possibly just be a tad loose where connected to the TB & or control valve.

#1,12, 5 & 14

Ask and you shall receive! Thanks Doc for the diagrams. I will print them out and start checking connections and hoses that you indicated.

Mar 2, 2013 | 06:11 PM

#12

iubhounds

Junior Member

Joined: Aug 2012

Posts: 12

From: Indiana

Quote:

Originally Posted by TAINTER

I have also had the Large Evap code and the Canister replaced on another due to too much mud and filth-flarn in it.

where is this Canister located that you speak of?

Mar 3, 2013 | 02:36 PM

#13

hummerz

Senior Member

Joined: Jul 2012

Posts: 8,978

From: C-Town

Quote:

Originally Posted by iubhounds

where is this Canister located that you speak of?

#17 on the illustration posted above. Rear end up behind rear axle.. 1 bolt, 1 connector, & 3 lines connected to it (1 from the vent valve)

Mar 3, 2013 | 11:46 PM

#14

TAINTER

Senior Member

Joined: Sep 2008

Posts: 6,126

From: SE Michigan

Quote:

Originally Posted by iubhounds

where is this Canister located that you speak of?

The evap canister is directly above and to the rear of the center of the rear axle. Mine had tons of mud and filth plugging the breather thingy. I do wash the underside after wheeling but never paid attention to the canister. Now I spray that off also.