2002 Chev Avalanche - Code P0440-FIXED

nickscarcare · Post by **nickscarcare** » Wed Oct 19, 2011 7:43 am

I have this Avalanche that intermittently has this code. Have run the service bay test before and has passed. Today it did fail. I hook up the smoke machine and pressurize the system and no leaks found. I am thinking possible bad purge solenoid or tank pressure sensor?

ricmorin · Post by **ricmorin** » Wed Oct 19, 2011 7:53 am

I've had plenty of intermittent vent solenoids on these. Sometimes I cycle them many times before I can get them to fail. Intermittents are tough but it sounds like you're on the right track.

brianp87 · Post by **brianp87** » Wed Oct 19, 2011 8:30 am

I just keep trying tell I find or dont find anyhting and be upfront with the customer if it doesnt show bad now doesnt mean it isnt but you hate to repalce soemthign you cannot condem either

Pauls Automotive · Post by **Pauls Automotive** » Wed Oct 19, 2011 9:08 am

We get a few of these intemrittens as well. It usually shakes out to be an vent valve intermittently acting up. We to just keep trying. We will use a heat gun to heat it and tap on it to.

nickscarcare · Post by **nickscarcare** » Fri Nov 04, 2011 10:32 am

Ok this one is fixed. It was the purge solenoid. Customer has been driving it now for 2 weeks and no light.

2002 Chev Avalanche - Code P0440-FIXED

2002 Chev Avalanche - Code P0440-FIXED

Re: 2002 chev avalanche p0440

Re: 2002 chev avalanche p0440

Re: 2002 chev avalanche p0440

Re: 2002 Chev Avalanche - Code P0440