That’s awesome! Sometimes it just takes a bit of looking around to find the simple solutions. Have you had any more issues since?
I’ve been fine since my fix! But honestly, it was a bit of a hassle troubleshooting through it all. Would have been simpler to have a full code read early on.
You should definitely consider getting a diagnostic tool. It can save you a lot of time and frustration down the line! Otherwise, based on your repairs, you’re a DIY pro now, mfields!
Haha, thanks, michaelmooney! I don’t know if I’d go pro just yet, but your encouragement is appreciated! I’ll definitely look into the diagnostic tool.
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I totally agree! Better to be prepared for any future P0446 mischief that may come your way!
Hey everyone, I’m dealing with the P0446 code on my Chevy Tahoe too! I’ve read that checking the gas cap is a good first step. Has anyone had success with this?
I had a similar issue! Replacing the gas cap completely resolved it for me. Just make sure you get a genuine part; it can make a difference!
It could also be a problem with the canister or the vent solenoid. Both are tied to the P0446 code. If you’re handy, you can check these yourself before heading to a shop.
I’ve been lucky with my Tahoe, but when I had a code issue, I consulted a mechanic first. They charged me about $100 to diagnose, which was helpful. Better safe than sorry, right?
That sounds great for DIY folks! I’m not too confident with tools; do you think a pro would be worth it?
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Absolutely worth it, Monique! I’ve learned that some issues are better handled by professionals. I once wasted time tinkering when I could’ve just asked for help immediately.
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If you need a new canister, don’t forget to check local junkyards! I found one for half the price compared to the dealer. Just make sure it’s in good condition!
Good tip about junkyards, Scooper! I’m debating if I should just buy new from the dealer instead. The price difference can be steep, though.
Right? I almost fainted at my dealer’s price! 
My buddy says he’s had decent luck with aftermarket parts.
Aftermarket can be hit or miss. Make sure to read reviews before buying anything. It’s a gamble but can save a lot of money.
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Thanks for all the feedback! It’s good to know both DIY and professional options are available. I think I’ll do a bit of both – check what I can and then consult a mechanic!