Hard to depress brake pedal

Asked by GuruSR1KJ Jun 12, 2019 at 09:35 PM about the 2001 GMC Sonoma SLS Extended Cab Short Bed 2WD

Question type: Maintenance & Repair

Hard to depress brake pedal,
hard to stop vehicle, almost
stalls after pedal is held down
and rpms drop.

2 Answers

3,775

open your hood to see the condition of your master cylinder. Probably wouldn't hurt to check your brake fluid as well. I believe it would be DOT3 fluid if you need more brake fluid. It is a GM and I honestly don't know the make well. Probably not far off. good luck

103,105

Brake booster may also be at fault, it can draw excess vacuum stalling an engine. A bad booster can also cause a hard pedal.

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