Where is the cabin air filter on a 1998 Chevy blazer?

The 1998 Chevy Blazer doesn't have a cabin air filter as standard equipment. They were not commonly included in vehicles of that era unless it was a dealer-installed option. To find out if yours has one, you'd need to:

1. Check your owner's manual: This is the best place to start. It will specify if a cabin air filter was part of your Blazer's original equipment.

2. Look behind the glove box: This is the most common location for cabin air filters in vehicles that have them, but since yours likely doesn't, you won't find one here.

3. Consult a repair manual: A Haynes or Chilton repair manual specific to your 1998 Chevy Blazer will show diagrams of your vehicle's HVAC system and definitively state if a filter was part of the design.

In short, it's highly unlikely you'll find a factory-installed cabin air filter. If you want one, it would need to be professionally installed after-market.