[Polarbear]

I was just flipping throught the duramax supplement w/the owners manual, and noticed that it said it has a air filter indicator. I know theres no better observation then to take it out and inspect it yourself, but i was curious as to, are they fairly accurate? Thanks -Adam
***Look for a few more questions over the coming week as i read the manuals, and get confused....this truck ROCKS!!!!!

 

[jholly]

They indicate when the filter is plugged.

My experience is your better off pulling out the filter and taking a looky see. At least that was my experience with my 1500.

Jim

 

[chipper]

My experience has been that by the time the indicator tells you to change, the fuel mileage has been suffering for a while already.