Service Brake Booster???

[STREETutilityVEHICLE]

last night i was driving my 2003 Tahoe and it pops up " SERVICE BRAKE BOOSTER " on the message center area. What does that mean I need to do? Thanks!

also, how do people feel about Denso Iridium plugs, and NGK Iridium IX plugs? thanks

 

[STREETutilityVEHICLE]

The message only popped up once, but still has me worried, should i be? anyone know what it means? thanks

 

[Rollin Thunder]

probably your power brake pump. may be as simple as needs fluid, or it may need a pump. *DISCLAMER* ****I MAY BE WRONG, DONT SUE IF I AM****

but if it did go completly you would only need to push harder to brake, and should not loose the brakes completly.

 

[STREETutilityVEHICLE]

thanks a bunch, i figure the same thing, but i'm unsure of my knowledge with these computer controlled trucks and cars.