Morning warmup and exhaust fume smell

[MDC9966]

I've only had my Hoe a few months, really loving it and the forum is a great way for me to find out the little things that bug me to see if it's a common issue or something to fix.

I've started hitting the remote start in the morning to get the seats warmed up for my lil girl before taking her to school. I've noticed that when I get in afterwards I can smell exhaust fumes in side the truck. I've had other rides with remote start and never noticed that before. The hoe is bone stock except I have a GM cold air kit on it. Stock muffler, still has the resonator too. I checked the seals around the doors and everything looks to be intact.

Any ideas how to tell where the fumes are coming in from? Has anybody else ever had this? I never notice it while driving, or even sitting in traffic or a drivethru. Just when it's sitting for 5-10 min running in my driveway for warmup.

Thanks for looking and hopefully helping me figure this one out.

 

[Rangel]

In a garage? Out in the open?

 

[MDC9966]

Out in the open, my driveway. It's weird, I thought about doing a resonator delete and running the exhaust out the rear but that's really not fixing a problem, just working around it. I also wondered if the cold air kit is letting some engine fumes circulate back into the cab? During autostart as near as I can tell only the seat warmers are coming on. Maybe I will just manually start the truck tomorrow morning and let it run with the keys in and everything on to see if the fumes are still getting in.

 

[AZSCTACO]

The only thing i can think of is the vent is set for outside air and is bringing in some fumes. Just a guess....

 

[MDC9966]

Which vent is that? Is that something that can be programmed on the remote startup function? That makes sense.

 

[Rangel]

He's talking about the ac flow button. Recirculate vs outside air. Makes sense. my Yukon and Sierra both switch to outside air even when they were on recirculate when I shut it off

 

[MDC9966]

Can the remote start be programmed to do recirc on warmup? It already turns on the seat warmers, which is great