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Probably emissions related, I would either get the code read as mentioned or you can buy a reader from Amazon for $20-30, probably same day delivery.
Does your truck have a fuel cap?BLACK HAMMER ARMS07/02 NFA Dealerhttp://www.blackhammerarms.comhttp://www.facebook.com/blackhammerarmshttps://www.instagram.com/blackhammerarms
Quote from: dreadi on May 03, 2023, 07:51:37 AMDoes your truck have a fuel cap?BLACK HAMMER ARMS07/02 NFA Dealerhttp://www.blackhammerarms.comhttp://www.facebook.com/blackhammerarmshttps://www.instagram.com/blackhammerarmsNope, just a flap.
If no performance issues it's probably a bad 02 sensor. Usually the hardest one to change. That said with the newer trucks it could literally be anything.