The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - So tell me about hydro boost, 1988 K30, pedal just about going to the floor

**1774btcrew** · 05-02-2023, 01:09 PM

I literally went through the same issue at the same time on my c30. I lost the brakes about 10 miles from home. Limped it back at a low speed and once I could use neighborhoods, I used the e brake(1 hand on the handle, foot on the ebrake) Had a NOS d
Delco master cylinder for it. My original master cylinder was leaking. Bench bled and installed. Install was easy and took just a few minutes. I couldn't get them to bleed at all. Tried gravity bleeding first, then had my wife pump brakes for me. All to no avail. I went to my shop and grabbed my vacuum bleeder pump, had the wife keep Master cylinder full and pumped away. This resolved my issue. This could be done with one person but it is a lot trips from master cyliner to brakes

05-02-2023, 01:09 PM	#9
1774btcrew Senior Member Join Date: Jun 2009 Location: Phoenix AZ Posts: 4,604	Re: So tell me about hydro boost, 1988 K30, pedal just about going to the floor I literally went through the same issue at the same time on my c30. I lost the brakes about 10 miles from home. Limped it back at a low speed and once I could use neighborhoods, I used the e brake(1 hand on the handle, foot on the ebrake) Had a NOS d Delco master cylinder for it. My original master cylinder was leaking. Bench bled and installed. Install was easy and took just a few minutes. I couldn't get them to bleed at all. Tried gravity bleeding first, then had my wife pump brakes for me. All to no avail. I went to my shop and grabbed my vacuum bleeder pump, had the wife keep Master cylinder full and pumped away. This resolved my issue. This could be done with one person but it is a lot trips from master cyliner to brakes __________________ AZPartsLocators on Instagram 1972 Cheyenne Super Short Bed big block "Blackie" 1977 Crew Cab GMC Short bed with 4BT Intercooled Cummins Diesel and a 4L80e "The Junkyard Dog" 1985 Crew Cab Chevy dually with 5.9 Cummins "The Big Dog" This is what my dad liked to be called by the grandkids before he passed so it seems fitting for his old truck.