So today i was coming back from the Oregon coast on 26 and it was basically stand still traffic going up hill, really nice on the clutch(found out if you let off the clutch in 1st the turbo will spool higher and keep your car moving). But anyway when i started to go downhill i put the car in neutral and just used my brakes, after about two miles my service brake system light is flashing at me, called onstar and found out it was code c1100, a code for the brake booster pressure sensor, i am guessing the code threw because there was not enough vacuum in the system, just thought this was weird, and yes the pedal did feel weak. Maybe more of you can shed light on this

 

My brakes work awsome! Only have 700 miles on it but I am in Colorado Elevation 5700 Ft

I have a Tahoe and I replaced the booster and ever since the brakes just haven't been the same... Lots of work done to whole brake system too. Looked at by guys who did brakes for 20+ years still couldn't figure it out.... Waste of my money.


Good Luck !

 

Yeah just checked it out at work was brake booster pressure sensor invalid signal, tested everything and turned out ok. Found a leaking intake camshaft position sensor though.