My 2004 Tahoe threw a P0442 code

Discussion in 'Engine & Drivetrain' started by ueww40, Aug 11, 2019.

  1. 2591tdj

    2591tdj Member

    Posts:
    59
    Likes Received:
    15
    Joined:
    Jan 26, 2010
    Location:
    Miss
    Name:
    john
    Those look like Rock Auto prices. I paid double that at Auto Zone for their Duralast valve and solenoid. The canister is also about $60-70 higher at AZ. I needed them right away and had to buy them locally.

    After installing both valves and disconnecting the battery for 10 minutes, the check engine light was still on when I started it up. How do I get it to go off? Or, could there be other problems (canister, fuel cap, leak in hose)?

    I went back to Auto Zone as I heard that they will reset the codes. They said that they aren’t allowed to do so. I’ll try Advance Auto.
     
    Last edited: Nov 4, 2019
  2. Rocket Man

    Rocket Man Build It Better

    Posts:
    11,723
    Likes Received:
    16,036
    Joined:
    Dec 25, 2014
    Location:
    Oregon
    Name:
    Mark
    Those are Amazon prices. I have Prime so most stuff comes in one day. You can reset the codes with a basic ODB code reader or they will reset after a few drive cycles. Or go to another auto parts store.
     
  3. 2591tdj

    2591tdj Member

    Posts:
    59
    Likes Received:
    15
    Joined:
    Jan 26, 2010
    Location:
    Miss
    Name:
    john
    I have bought many vehicle parts on my Prime account but I tend to forget that I can buy parts on Amazon. Thanks for the reminder.
     
    Rocket Man likes this.
  4. Big Mama

    Big Mama Full Access Member

    Posts:
    1,621
    Likes Received:
    569
    Joined:
    Jul 21, 2015
    Location:
    Virginia
    Name:
    Steven
    The big parts stores aren’t allowed to clear codes anymore. They may have a “loan a tool” scanner you can use or buy the cheap one for about $15 on Amazon. I used that one to clear my evap codes.
     
  5. ueww40

    ueww40 TYF Newbie

    Posts:
    25
    Likes Received:
    12
    Joined:
    Aug 5, 2017
    Name:
    Rick
    Here is how it ends. On my last post I said that I did an extensive smoke test and all the lines seemed to check out fine. I replaced the purge valve, the vent valve and the gas cap, had the code cleared at a Advance Auto Parts store, driven the car almost 1300 miles in 1 1/2 months time and the check engine light stays gone. So I count my blessings and keep my fingers crossed. The light may come on in one of these days or it may not, but so far it appears that the problem has been fixed. Thanks y'all for your help,advise and good ideas.
     
    swathdiver and wjburken like this.
  6. Rocket Man

    Rocket Man Build It Better

    Posts:
    11,723
    Likes Received:
    16,036
    Joined:
    Dec 25, 2014
    Location:
    Oregon
    Name:
    Mark
    Glad you got it resolved hopefully!
     
  7. Big Mama

    Big Mama Full Access Member

    Posts:
    1,621
    Likes Received:
    569
    Joined:
    Jul 21, 2015
    Location:
    Virginia
    Name:
    Steven
    Same here. I think I heard something like 50 or so on/off cycles would clear it if you didn’t so it sounds like you got it.
     
  8. Madmax02

    Madmax02 TYF Newbie

    Posts:
    8
    Likes Received:
    4
    Joined:
    Jan 12, 2019
    Name:
    David
    Great that you fixed it. I had this problem twice on my 2005 Tahoe. Both times the problem was the charcoal canister. I used to fill my gas tank up all the way up to the gas cap. Especially if gas prices were low! While listening to Car Talk one day, they stated not to do this because the canister can’t vent properly and the charcoal gets saturated. So I stopped filling my gas tank up to the gas cap and just stopped when it automatically stopped. The problem has never reoccurred.
     
    Big Mama, swathdiver and Rocket Man like this.

Share This Page