Dorman M630031 Brake Master Cylinder Compatible with Select Cadillac/Chevrolet/GMC Models

I was doing brake work on my truck and its 20 yrs old and I was doing calipers and flex lines already, so I figured heck, the master cylinder can't be far behind and its pretty cheap to do, so I ordered this part. Direct replacement and with the bleeding kit (sold separately) I did the "bench bleed" on the truck which for me was easier, however still required two people to see when it was done bubbling.My new brakes are awesome, the pedal is high and hard, no mushy pedal! I'd recommend this part and doing replacement as I did if your vehicle is old and the existing fluid looks crappy and dark. The brake fluid is hydroscopic and adsorbs water from the air, and that is a cause of corrosion to everything in your system - ABS pump, calipers, master cylinder.

works well. great fit. was happy with the product and will buy again for a future project truck.

Great upgrade for any 88-98 Chev or GMC. Finally I have brakes as good as a brand new truck, no more spongy/soft pedal. Only reason I didn't rate it 5 stars is the price was a little on the high side. . but we always pay alot more in Canada.

Upgraded the master cylinder on my '96 chevy. Easy installation. Pedal is way stiffer.

Used this to replace the master cylinder on my 1994 GMC K1500. Followed many of the website threads and many Youtube videos. Fit just fine and does seem to have shorter pedal travel. Hard to tell though since my rear wheel cylinders were leaking, replaced those also. I like the increased fluid capacity over the original master cylinder.