Bleeding brakes - 1994 LeSabre - proper sequence?

[Whoaru99]

Doing some brake work and I have run into controversy on the bleeding procedure. Since I don't have a shop manual, I went to the library and consulted a Chilton's book. The problem is that the Chilton's only went to 1991 or 1992, and again, mine is a 1994.

The controversy is that for the earlier models, the Chilton book said the bleeding sequence was criss-cross (RF, LR, LF, RR, if I remember properly) BUT, my "old school" mentality is longest to shortest as in RR, LR, RF, LF.

So, anyone with a factory service manual that covers 1994 that could clear this up for me, I'd sure appreciate it. Either method probably "works", but I like to use the most correct methods.

I also did some searching here and the results seem to parallel my thoughts on the longest to shortest method, but then why the criss-cross recommendation for at least some years?

TIA.

[HotZ28]

This link may help;
1986-1999 Brake Bleed Procedure

[BNaylor]

Originally Posted by HotZ28

This link may help;
1986-1999 Brake Bleed Procedure

You know it makes you wonder Bo what the proper bleeding sequence is. Everyone you ask will give you their method but who is to say it is right or wrong. Even service manuals differ.

I recall GM recommends RR, LF, LR, RF.

[Alibi]

Wierd... I've always heard longest to shortest (RR, LR, RF, LF) and I've never had any trouble doing it that way.

Is there a reason for the wierd criss-crossing?

[BNaylor]

Originally Posted by Alibi

Wierd... I've always heard longest to shortest (RR, LR, RF, LF) and I've never had any trouble doing it that way.

Is there a reason for the wierd criss-crossing?

Oh you mean the diagonal pattern? I don't have a clue.

It is just the pattern GM specifies in the service manual covering ABS braking systems. I use one of the others and it works for me.

[Alibi]

GM must have some reason for it but I can't think of why. Maybe they just try to confuse the do-it-yourselfer enough to make them bring it into a dealer$hip.

Wierd. Learn something new everyday though.

[HotZ28]

Just to help eliminate some confusion, the bleed procedure is determined by the year of the car, type of ABS system and whether or not, it has traction control.
Teves Ii Anti-lock Brake System
Teves Mark Iv Anti-lock Brake System
Delco Vi And Delco Bosch V Anti-lock Braking Systems

[BNaylor]

Originally Posted by HotZ28

Just to help eliminate some confusion, the bleed procedure is determined by the year of the car, type of ABS system and whether or not, it has traction control.
Teves Ii Anti-lock Brake System
Teves Mark Iv Anti-lock Brake System
Delco Vi And Delco Bosch V Anti-lock Braking Systems

Interesting annectodal information, however, I'm still confused.

The poster has a 94 LeSabre, therefore, he shoud have an ABS VI system. Since that is the case then the proper bleeding sequence as specified by GM is:

RR, LF, LR, RF

I believe that was the info requested by the OP. Are we all in agreement?

[corning_d3]

FWD's use a diagonal-split master cylinder. One section controls a front brake and a rear brake. That way if one section quits, you'll still have one front brake working.

I recall GM recommends RR, LF, LR, RF.

This would be correct.

[Whoaru99]

Thanks all.

RR, LF, LR, RF it shall be.....