bigike

iTrader: (1)

I installed a 3 channel diff in my 4 channel car, couldn't get ABS to work so i swapped the 4 channel back in. Went to bleed the brakes and i'm not getting anything to the back yet, and there was a masive sucking sound at the ABS module. There was a large leak there.

I've turned the car one trying to cycle the ABS and this didn't fix it.

The car sat jacked up in the rear for 2 months while i was offshore. Is this a check valve or a known replaceable part? Been raining, will remove the cover and check out the leak.

Thanks, Jay

EDS01SS

iTrader: (30)

the abs module needs to be activated to bleed it. this can only be done by using a tech 2 scan tool. There are some folks on here that say it can be done by spinning the wheels to activate the abs but i have never tried it like that so I can't verify. search bleeding brakes on here and you will find what I'm talking about.

bigike

iTrader: (1)

Is that why it's leaking from that plug?

bigike

iTrader: (1)

Is this a symptom of the abs needing to be bleed?

M4N14C

iTrader: (3)

Bump.

Mine just started leaking from that back plug pretty bad too. Stock unit. Does that just mean it needs to be bled?

Floorman279

iTrader: (11)

Not to hijack. But if either of u figure out the module is no goof I'm selling a used 4 channel one

kookamunga

I think it needs to be replaced since I don't think its serviceable. mine just started doing this the other day. eventually leading to a total loss of brakes GM parts doesn't list a TCS pump so it eBay time I guess. boo