I went to take the truck in for the DEF recall which apparently activates the DEF system that was previously not functioning? Where was my DEF going? I started the truck and it had an engine knock. The knock stopped after it warmed up. The dealer told me to ignore it until it throws a code. Anybody else have a cold engine knock?
Same thing, hardly used and def until 9K now twice as much if not more. Scheduled for recall on Wednesday. I asked what they were going to do; sounds like another ecm reprogram. Curious because it was never an issue until my free wifi took affect. Is GM doing software upgrades via wifi remotely?
I have a bunch of optilube, so I added it to the 3.0. My fuel economy went down to 27 form 30. I ran 2 tanks without and back up to 30. Added again and back down. Don't have a clue why. Same brand fuel same type of driving.
Today I went through the same; 64 watt max load. Power up the outlet then plug in, don't plug in first. Not super impressed with the outlets, it would be nice if they worked without the truck running.
I'm pretty sure its a straight pipe back from the DPF. That's as free flowing as it gets.
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