Mechanics

CHEVROLET TAHOE ENGINE PROBLEM

2007 Chevrolet Tahoe • 65,263 miles

MIL engine icon showed up after I changed an oil change. I filled the gas tank and tightened the gas cap and engine light still showed. I ran a diagnostic test and got the codes p0449/p0455 shows up as EVAP issues. 1 for circuit intermittent and the other for (gorss leak/no flow). My question is what exactly is wrong I want to see if there are any leaks in the wirings and solenoids/purge valves without having to change those good parts. I did some research found out I needed a smoke check-called local dealers which told me it'll run about $120.00-$200.00 is there anything else that you think might be an issue besides tightening and buying.
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Atimuamigi
December 4, 2012.



Here is a tip I found on my online repair info give it a try and let me know it would explain both codes let me know what you find?

5.3L Check engine light on, code P0449 vent sol. Circuit.

Found vent solenoid rotten, it sits kinda on top of spare towards front of truck, you can see a small amount of rust coming through the body of the actual solenoid on the vent.

Wish I had one of dem dars picture cameras to show you.

Have replaced quite a few of these on these trucks


Saturntech9
Dec 4, 2012.
Thanks, so what exactly am I changing out?


Tiny
Atimuamigi
Dec 4, 2012.
Your not changing anything yet your inspecting the vent solenoid like the tip says. Iam far away and cant see or test anything so thats your job let me know what you find.


Saturntech9
Dec 4, 2012.
I posted a diagram of where the solenoid is.


Saturntech9
Dec 4, 2012.
Thanks brother it was the vent solenoid. Pretty rusty since its left out in the open at the bottom of the base by the spare tire. Found an online forum and it seems to be an issue with these models from chevvy-I wonder why? But thanks for all your help. I'll be posting more questions in the future.

Thank you,

V/R
07 Tahoe


Tiny
Atimuamigi
Dec 6, 2012.
Your welcome thats what were here for glad to hear you found the problem. They need to out it out of snow and salt reach so that doesnt happen.


Saturntech9
Dec 6, 2012.
I know right. Okay so what about the code p0455? How do I fix that. Unless if I fix code p0449 than it'll fix that too as well?


Tiny
Atimuamigi
Dec 6, 2012.
If the vent solenoid doesn't work properly it can set a P0455 thats what closes off the system so it can test for leaks. So lets fix the P0449 clear the codes and see what happens. Let me know what happens.


Saturntech9
Dec 6, 2012.