The brakes on my 1998 2wd 1500 Suburban have been bad for a while.I didn't really notice that they were "broken" until today.Initial pedal effort was very hard, but I got almost no brake effect until the pedal was pushed maybe 1"-then it would brake, not great, but I did have brakes. It finally crossed my mind that it was braking like a car with the engine off,and no power braking. I finally turned the radio off and listened-there is a loud hiss when I press on the pedal.I got under there,and pressed the pedal with my hand,and with the other hand I could feel air blasting out of the brake booster.I can feel spongy foam stuffed inside the booster around the brake rod-guessing this isn't a seal, but it just foam to hold some lube? 1)Where can I buy a booster-OEM-most cheaply?Any online discount Chevy parts sellers.I bet autozone has a rebuilt one in stock, but I've had problems with autozone parts in the past. 2)How hard a job is it.I have a Haynes repair manual-it mentions that I might have to remove the lower dash panel,and unbolt the steering column to get access to the pushrod and booster mounting nuts. I sure hope I don't have to do that? 3)What trick is there to getting the lower dash panel off without breaking something?Those things usually have some sort of clips you can't see,and they always drive me crazy. 4)Any tips on the easiest way to do this? Paying someone isn't an option.I'm broke(medical debt) in school( for teacher's certification),and substitute teaching($62/d),so it is strictly DIY.I'm not so flexible-57 yo-but I can get under the dash. Any tips appreciated. Thanks, Charlie PS-This is the first thing to break in 10 months of ownership on a 198,500 mile vehicle-not bad for $2950.The PO had the trans rebuilt at 185,000,and the AC,and intake manifold gasket at 155,000-so it is worth repairing.