I filled the DEF tank and the low DEF message won't clear. Now it's saying Action Required, fill DEF tank or speed will be limited to 65. I'm traveling and it's the weekend. Truck is 2016 Duramax.
JA: What is the model of your '16 GMC?
Customer: 2500 SLE Duramax
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Yes. Traveling with no access to dealership. I have tried starting, stopping, setting overnight, it just keep saying I'm empty. I put 5.6 gallons at a def pump 2 days ago. I'm down to 154 miles before speed is limited. I'm 400 miles from home.
JA: Will the headlights
turn on? Is the battery
Customer: Everything else is fully operational and operating perfectly.
JA: Anything else you think the mechanic should know?
Customer: I think that's it...Hoping I can reset so I'm not speed limited and don't have a message flashing at me for 8 hours.
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the GMC Mechanic about your situation and then connect you two.