What did you do to your NBS GMT800 Tahoe/Yukon Today?

[Tonyrodz]

Check and see if it looks wet between the master cylinder and booster. The rear seal could be worn out and leaking. Also check power steering fluid condition to see if it looks contaminated.

I don't have hydroboost, so pwr steering fluid wouldn't be involved. How can you tell if just the booster is bad?

 

[Scottydoggs]

I don't have hydroboost, so pwr steering fluid wouldn't be involved. How can you tell if just the booster is bad?

usally the pedal is rock hard when the booster is bad. like when the truck is off, a few pumps and its rock hard. <<<<man that didnt come out right lol