P0449 and P0455

[todds87ss]

AH

question then - if in the area and with cradle dropped - would you not also take the time to drop the tank - and replace the fuel filter?

I suppose if it needed to be done...That's like my wife saying "since we are replacing the stove, we should re-tile the kitchen

[Napalm]

I suppose if it needed to be done...That's like my wife saying "since we are replacing the stove, we should re-tile the kitchen

well I wouldn't go quite that far.

just figured if you have some miles on there (im at 139K right now) it might be a good idea to clean that out so you're not back there again in the next 20.

[J Wikoff]

I need help. I thought I knew where the thing is. I found something kinda similar on the passenger side to the canister that others have posted and have pictured in my hand, but the one on the car is smaller in diameter and has two lines attached to it. This replacement has just one port for a line. Where is this thing?

[J Wikoff]

Well, I figured out how to make the code go away without replacing anything. I read that an open circuit in the valve will set the code right away. So, I shorted the connector. I only clears the code and checked it again, and it didn't come back right away like it was. How long do you think I could drive like this without another code popping up?

[J Wikoff]

Well I didn't want to fry anything, like my car, so I just plugged it back in. Would it be cheaper to have a dealer replace the canister if I provide the right part, or by a tuner that can disable the code?

And if I get a tuner that can disable it like an HPTuner, and didn't want to try doing my own custom tune, could I disable the code, then use my existing SC Cortex over the top of that?

[Napalm]

Well, I figured out how to make the code go away without replacing anything. I read that an open circuit in the valve will set the code right away. So, I shorted the connector. I only clears the code and checked it again, and it didn't come back right away like it was. How long do you think I could drive like this without another code popping up?

so had I not fixed mine very easily with a new gas cap I too would have tried something like that a few years ago.

Nothing really wrong with it just you will vent some fuel vapors. Which is evil just like the PCV system. If you can keep the light off the car should be just fine without it.

evidenced by the fact that you can drive the car just fine for ever with the code lit in the system - you just can't use remote start. and that light gets annoying.


As far as what you did - nothing wrong with that perse but I would do a few things.

Option 1 - get the corresponding plug type that is the female version - - jumper the pins together - use that seal plug in place - coat/cover all wiring for wet/dirty conditions. IE like how the car was built.

Option 2 - make your jumper again but this time coat the wire - then shrink wrap it if you can or use quality electrical tape and secure the harness up and out of the way such that it won' tfall into moving parts etc.


In theory though nothing wrong with your idea. I do think however you would end up needing a resisor in that line, I don't know if it is purely an , on or off - situation.

[J Wikoff]

I measured and there was battery voltage across the pins, so I didn't want the paperclip getting hot and melting something, particularly near fuel vapor lines.

I have stuff for heat shrink. I found the later 09 valve and ordered it. If for some reason I can't get it installed, I'll rig up a bypass.

[Bob the Noob]

I had this pop up recently. Made sure I ordered the 09 part and had my local shop install it for 100 bucks. They looked at the normal procedure about dropping the whole cradle and all that, then said "Hell no we're not doing it that way." Dropped the passenger side down a bit and were able to reach it that way.

Good to know there's shops out there than work smart and don't over-bill the customers.

[MIEngineer]

I had this pop up recently. Made sure I ordered the 09 part and had my local shop install it for 100 bucks. They looked at the normal procedure about dropping the whole cradle and all that, then said "Hell no we're not doing it that way." Dropped the passenger side down a bit and were able to reach it that way.

Good to know there's shops out there than work smart and don't over-bill the customers.

Bob, I have a feeling mine is the same way. I am ordering a cap, but a new valve might be in order. Which p/n did you go with? I'll have to check mine.

Fun times.

[TonyKarter]

Waiting on a new GM cap to be delivered. Hope that fixes mine, but my luck usually does not run that way.