Pollen Season and Cabin Filters: Chevrolet Colorado Edition

Why the cabin air filter is the most ignored part on the car. Applied to a 2015-2022 Colorado, here is what that looks like.

Drivetrain and Transfer Case

Watch for a hum that changes with steering input, which usually points at a wheel bearing. Transfer case and differential fluid on a schedule that tightens sharply if you tow or run in dust. Wheel bearings are replaced on noise, not on mileage.

Cooling System

Watch for the sweet smell of coolant after shutdown with no visible puddle. GM’s long-life coolant is generally rated for 5 years or 150,000 miles on the first fill and 5 years or 100,000 miles after that. Hoses and the surge tank should be inspected annually once past 80,000 miles.

Ignition and Engine Management

Watch for a rough idle that smooths out above 2,000 rpm. Iridium plugs on most modern GM engines are a 90,000 to 100,000 mile item. Coils are replaced on failure, not on a schedule.

Filters and Fluids

Watch for an oil life monitor that reaches zero faster than it used to. Follow the oil life monitor rather than a fixed mileage. Engine air filter every 30,000 to 45,000 miles. Transmission service intervals vary widely by transmission and by whether you tow.

The Short Version

Transfer case encoder motors: Ride height, axle ratio and locking differential content all change these numbers.
Radiators: Engine, tow package and rear-A/C content all change the radiator and hose part numbers. Have the VIN ready.
Spark plugs: The same nameplate can have three different engines in one model year. VIN is the only reliable way to get the right plug.
Oil filters: Engine size and emissions equipment change the filter, and diesel filter kits in particular are not interchangeable across model years.

If you are not sure which version fits your build, send us the VIN and we will confirm before anything ships. Shop our Chevrolet OEM parts catalog or search for Colorado parts.