Maggar ... 6/14/2010
2004 GMC Sierra 2500 HD SLE 8 Cyl 6.6L
Brake lights come on pedal feels hard and pulls to right
I changed front wheel bearing ABS light stays on red warning light comes on once in a while. thats when brake pedal feels hard. When you push brake pedal after you let off feels normal again
Check the condition of your brake booster, vacuum line and brake line (it may be pinched).