2003 sierra - vent solenoid question

[crobinson95]

I'm new on here and have a 2003 gmc sierra 1500 sle ext cab z71. I have been getting the P0446 code so I looked on here and found lots of information regarding it. I found the tsb about it and order the part it called for - ac delco 19258957 and received it. I see the old one up on the frame over the gas tank at the front of the bed.

The old one is rectangular in shape and the new one seems bigger and round. My question is do I have the correct part does it just bolt up in the same place?

 

Is it possible to replace this without removing the bed? I am not sure if I can unplug the old one and plug the new one in with the little bit of space I see there.

 

Thanks for any help.

[RyanbabZ71]

Not apples to apples but its close. I replaced mine in my 2010 Silverado yesterday. I didnt have to remove anything

 

http://www.gm-trucks.com/forums/topic/186536-how-to-replace-evaporative-emission-vent-valve-solenoid-for-gmt900s/

[Nanotech Environmental]

I'm new on here and have a 2003 gmc sierra 1500 sle ext cab z71. I have been getting the P0446 code so I looked on here and found lots of information regarding it. I found the tsb about it and order the part it called for - ac delco 19258957 and received it. I see the old one up on the frame over the gas tank at the front of the bed.

The old one is rectangular in shape and the new one seems bigger and round. My question is do I have the correct part does it just bolt up in the same place?

 

Is it possible to replace this without removing the bed? I am not sure if I can unplug the old one and plug the new one in with the little bit of space I see there.

 

Thanks for any help.

Had the same issue. You can get it out, but IMO, it would be dumb to put it back in the same location, if you can avoid it.

Here's what I did;

http://www.gm-trucks.com/forums/topic/83753-evap-vent-valve-location/?p=1718115

[crobinson95]

Had the same issue. You can get it out, but IMO, it would be dumb to put it back in the same location, if you can avoid it.

Here's what I did;

http://www.gm-trucks.com/forums/topic/83753-evap-vent-valve-location/?p=1718115

 

 

Thanks for the info. Did you have any issues getting to the wire to pull it out enough to reach the new spot?

[Nanotech Environmental]

All you have to do is slice & remove the factory tape that wraps the corrugated plastic cover, then pull the wiring for the solenoid out as far as you need. Re-tape everything back up when you're done.

[crobinson95]

I finally got around to replacing the parts. After I finished I cleared the code and started the truck. Before it move 100 feet the light was on again but this time it is reading P0449. From what I have found on this site the codes seem to be almost the same thing. What else can I check? I'm thinking I either have another issue or a defective part. Any thoughts?

Thanks

[Nanotech Environmental]

I finally got around to replacing the parts. After I finished I cleared the code and started the truck. Before it move 100 feet the light was on again but this time it is reading P0449. From what I have found on this site the codes seem to be almost the same thing. What else can I check? I'm thinking I either have another issue or a defective part. Any thoughts?

Thanks

You have to drive it on and off for a few days in different environments to get everything to clear.

[tbarn]

P0449 is an electrical issue with either the new solenoid or the wiring. Code cleared is code cleared. No driving required.

[crobinson95]

What is the best way to determine if the problem is the truck - wiring or the new part? I have a basic innova 3030 scan tool and innova 3320 multimeter.

[crobinson95]

Ok - so I kept looking on the internet and found something about a fuse so I checked and had a blown fuse under the hood. After replacing that, I cleared the code took the truck for a ride and within a mile the light came on again. Now it is back to the P0446 code. I am beyond frustrated with this truck it seems to have had every issue the 2003 trucks are known for. Any suggestions on what else to check?

[tbarn]

Look for a competent repair shop.