What did you do to your AT4 today?

My factory under seat storage is full of tools, recovery gear, ratchet straps, jump box etc so I would have to move that stuff somewhere so I will skip it. I was thinking about it though.
Exactly the same situation here, I will skip it too. In fact I'm happy with the sound in my truck; I spent a small fortune on my mercedes sound system, no need to do it here again.
 

Ran the code this morning. p2c7a. A quick google shows anything from loose exhaust clamp, loose nox sensor, bad cat, or a needed software update. Definitely exhaust related somewhere though. Scheduled an appointment with the dealer but they can't get it in until Wednesday. Doesn't run rough or seem to have issues, so I'm going to keep driving it for now. If I have time I'll poke around and see if I can find any glaring issues underneath.
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Ran the code this morning. p2c7a. A quick google shows anything from loose exhaust clamp, loose nox sensor, bad cat, or a needed software update. Definitely exhaust related somewhere though. Scheduled an appointment with the dealer but they can't get it in until Wednesday. Doesn't run rough or seem to have issues, so I'm going to keep driving it for now. If I have time I'll poke around and see if I can find any glaring issues underneath.
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Which model/year truck?
 

Ran the code this morning. p2c7a. A quick google shows anything from loose exhaust clamp, loose nox sensor, bad cat, or a needed software update. Definitely exhaust related somewhere though. Scheduled an appointment with the dealer but they can't get it in until Wednesday. Doesn't run rough or seem to have issues, so I'm going to keep driving it for now. If I have time I'll poke around and see if I can find any glaring issues underneath.
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had the same code on mine 21 AT4 54000 miles , they did a forced regen and they also did a service bulletin and havent had that issue since. it is strange that that code could be anything from a new cat to a clamp on the exhaust lol.
 

Sorry yeah I should probably fill out a signature line at some point. Sierra 1500, 3.0 Duramax. 28k miles roughly.
Mine gave that code at about the same mileage. Warranty covered it. It was an exhaust gasket on the joint before the first nox sensor. It allowed atmosphere air to be sucked in, diluting the sensor. Dealer had it in stock.
 

had the same code on mine 21 AT4 54000 miles , they did a forced regen and they also did a service bulletin and havent had that issue since. it is strange that that code could be anything from a new cat to a clamp on the exhaust lol.
Mine gave that code at about the same mileage. Warranty covered it. It was an exhaust gasket on the joint before the first nox sensor. It allowed atmosphere air to be sucked in, diluting the sensor. Dealer had it in stock.
Thank you! That gives me some information to give the dealer anyway. Seems likes it's a fairly common code.
 

Just got into a 2025 AT4. Got a chance to install my colormatched fender flares, K&N catch can and underhood lighting last night. Got more plans for her in the future.
 

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Just got my Leer topper/camper shell installed today! I’m very pleased with it. So far I’ve added the topper, Decked bed storage, AMP power steps and ceramic window tint! Also just ordered cameras to replace the rear view mirror and cargo cameras.
 

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