Code po442
- Thread starter chrisi12
- Start date
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markni12301
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Gas cap was pretty crappie. I replaced it with a new cap and the service engine light came back on. It’s not affecting the performance of the truck while driving however I hate having the light on. Do you suggest I do or look any where in particular?? Ty
Ghost10
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Year make model how many miles let’s see clean the air filter clean the gas cap with a negative unplug from the battery and I said and done put terminal back on battery and drive for a couple hundred miles see if the light goes away
My truck doesn't use a gas cap
Rygrego
Full Access Member
Doesn't need to disconnect the battery for a reset if he's got a code reader it will erase codes and the air filter has zero to do with that code. All your way will do is give more work to reset clocks and in some cases radio stations. That code is generally a cap not screwed on with the minimum 5 clicks.
tough one, without paying for a diagnostic/smoke test/yada yada. Then the best way to approach this is to shotgun it and replace both solenoids and canister the oem parts will run a little over $200 plus a hour of your time to R&R.
If you want to try and piece meal it then I would replace the solenoid on the intake 1st as it's the cheapest thing after a gas cap.
and are you sure you posted in the right section? the 2015-2020 do not have a gas cap
If you want to try and piece meal it then I would replace the solenoid on the intake 1st as it's the cheapest thing after a gas cap.
and are you sure you posted in the right section? the 2015-2020 do not have a gas cap
markni12301
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Interesting, I have a 2015 Yukon with a gas cap that is only capable of 1 click. I do the gas cap cleaning/maintenance regularly.
For me, I also tend to troubleshoot and fix something then clear the code to see if it returns. Not sure it's right or wrong, it's just what I've done.
For me, I also tend to troubleshoot and fix something then clear the code to see if it returns. Not sure it's right or wrong, it's just what I've done.
they did make some changes mid-year 2015, my 18 just has a flap same platform so figured they all had no cap.
the "small leak" can be hard to diagnose, it ends up costing more to have it diagnosed and parts replaced than it does to just go ahead and replace them, you can end up paying a $160 diagnosis and they will turn around and say we cant find anything wrong? then you end up paying inflated shop parts prices and labor to "try" this one part.
occasionally it can be the gas cap, replace cap, clear code, 3 days later code comes back lol, or maybe not. cheaper at that point to just shotgun it, takes the average person about an hour to replace all 3 parts, drop the spare down, drop the filler tube down, squeeze the tubes and connectors off, zip tie the air filter to the filler tube, push it back up, pop the hood do the solenoid there, put the spare back up. done. unless you find pellets in the tubes then you have to blow them out with a air compressor.
first I have heard of any of the k2's having a gas cap so it must the first 6 month run
Tahoe14
Full Access Member
They came out with the 2015i(interim) in October for that model year and had 3 or 4 option changes, kick open liftgate, phone charging station, On star 4G LTE WiFi hotspot, Siri eyes and text message alert. They may have changed the gas cap at that point.
sealandsky
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2016
