Brake issue, on going

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

zodiac572

Newbie
Joined
Aug 5, 2024
Messages
47
Reaction score
48
Location
Cochrane
More bleeding is going to be needed. Gonna need to get a scan tool and bleed the ABS module too.

This has been discussed thoroughly so a quick search through the forum should help you find the information needed. :Get him!:
Ya just ive searched for a scan tool for obd1 doesnt seem to exist ever since obd2 came out, i did see a way to bleed abs module so will try that and rebleed the lines
 

zodiac572

Newbie
Joined
Aug 5, 2024
Messages
47
Reaction score
48
Location
Cochrane
Depending on which brake lines you replaced, I'm pretty sure you'll have to bleed the ABS module then bleed the brakes afterwards.
I did replace quite a few lines seems every bleed i find a leek , but all fixed now, to bleed the abs module im guessing its the black cap on the side of it, looks like a small pin ?
 

Attachments

  • Screenshot_20241001_125023_Chrome.jpg
    Screenshot_20241001_125023_Chrome.jpg
    108.6 KB · Views: 3

Schurkey

Supporting Member
Supporting Member
Joined
Jan 14, 2018
Messages
12,751
Reaction score
16,695
Location
The Seasonally Frozen Wastelands
95 gmc c2500
Should be the EBC310 ABS module.

Ya just ive searched for a scan tool for obd1 doesnt seem to exist ever since obd2 came out
The Axle + Brake forum alone has multiple tools mentioned, useful for bleeding ABS. Which, again, is where this thread belongs.

to bleed the abs module im guessing its the black cap on the side of it, looks like a small pin ?
Absolutely not. There are videos on Youtube showing that the "pin" can release air. It was not effective on my '97 which uses that same EBC310 module; I got NOTHING out of that "pin".

In fact, that "pin" is the stem of the metering (holdoff) valve, which is part of the combination valve. It's bolted to the ABS unit, but not part of the ABS unit. The metering valve affects the front brakes ONLY.

You need a scan tool to properly bleed the ABS unit. Instructions attached.
 

Attachments

  • 1990s_GM_Light_Truck_Kelsey_Hayes_ABS_Brake_Bleeding_Procedure_Ref_Cards.pdf
    130.2 KB · Views: 1

Orpedcrow

I don’t know what I’m doing
Supporting Member
Joined
Aug 20, 2022
Messages
2,860
Reaction score
7,492
Location
East Texas
ive searched for a scan tool for obd1 doesnt seem to exist ever since obd2 came out
Please use the search function in the forum. You WILL find what you need. They do exist. The EBC310 module is very finicky with air in it. Air gets stuck in the valves and WILL NOT be released unless the valves are operated.
 
Top