Chevy Silverado and GMC Sierra Forum banner
1 - 1 of 8 Posts

· Registered
2017 Silverado LTZ Z71
4,805 Posts
Could be mildew. Has it sat for a long time without the fan/ac/heat running?

Also could be a critter in there.
1 - 1 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.