Well, got back at it in my driveway, the last couple days. My landlord needed an oil change and I did that, the air filter that was filthy, the cabin air filter that was filthier, cleaned the throttle bore-after removing the throttle body, found some oily residue in the pcv lines and ordered all new lines and pcv from RA-Genuine GM and found leaking oil cooler lines and ordered Genuine GM from RA and will be doing that in a month or two. Also found his p/s air dam had broke at the tip and was hanging out slightly and am trying to figure out the best way to fix. The ear is broken from the air dam.....Also found where a local shop had removed the air dam and front bumper structure for access for some other work that the landlord cannot remember and looks like they hand started two bolts and one was still hanging there and the other was gone. I found another bolt to install and tightened it all up. This is all on a 2018 Suburban.
Now after the cabin air filter, when the blower is on, it has a slight rumble noise and gets louder as the speed increases. I did not listen to the fan at all before changing the cabin air filter. I pulled it back apart and the filter is installed correctly and in the correct direction of air flow. I cleaned out the CAF pocket when I replaced it. I explained that some debris is likely down in the squirrel cage or, over time, that clogged filter worked the blower too hard and now the bearings are grumbling. He knows I am not at fault. I told him we would get a new blower and cage. Remove the lower cover and drop the blower and inspect. If has debris, I then will plug it back in and hold the motor and feel for the rumble and then clean it and do it again and compare. If all it needs is a cleaning of debris. I will reinstall and take back the new motor but if needs new motor, I am going to plug it in and see how it feels too. This ought to be fun.
