Discussion Starter · #1 ·
I will start off saying that I love my little white Chevy Colorado "Pick em up Truck". Just turned 100K with no issues except a dealer replaced exhaust gasket at 20K. Damn thing sounded like a weed wacker!. Coming back from a 400 mil. run from Paso Robles a few weeks ago. The check engine light came on half way back and my repair guy tells me it is the Nox sensor 1. It will take a week and $500 to replace it. Two days later the check engine light turned off and my mechanic had not ordered the new sensor. Made a weekend run to Tahoe in the snow and the truck is running fine, no check engine light, except I normally average 24.8 mph, now I am averaging 29 mpg. I have no idea when the truck goes thru a a regen cycle. Do I run down and get a new sensor? Does the sensor play a part in the regen. process? If the sensor was out wouldn't the check engine light be one. Final why the increase in gas mileage?