hard brake pedal - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Buick When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 01-25-2011, 02:22 PM   #1
Junior Member
Thread Starter
 
Join Date: Jan 2011
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
i-ross1 is on a distinguished road
Cool hard brake pedal

have a 1990 lesabre brake pedal is very hard abs light on codes are 12,11,23,22,21,31 and codes will not clear any ideas do not have a manual for this unit arre the ecu a common problem with these
i-ross1 is offline   Reply With Quote
Old 01-25-2011, 08:17 PM   #2
Senior Member
Posts like a Supercharger
 
mike9fore's Avatar
 
Join Date: Mar 2010
Location: Beltsville,MD
Posts: 181
Thanks: 0
Thanked 0 Times in 0 Posts
mike9fore is on a distinguished road
Default

Quote:
Originally Posted by i-ross1 View Post
have a 1990 lesabre brake pedal is very hard abs light on codes are 12,11,23,22,21,31 and codes will not clear any ideas do not have a manual for this unit arre the ecu a common problem with these
Maybe EBCM Malfunction and/or Brake Booster issue
mike9fore is offline   Reply With Quote
Old 01-25-2011, 09:49 PM   #3
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Ignore code 12, it'* system normal.

I don't have 11 on my list.

21 tps sensor out of range
22 tps sensor signal voltage low
23 intake air temp sensor out of range, low

31 cam position sensor fault

All kind of unrelated. I would start checking all the wires for damage. I would also inspect the TPS, something could be wrong with it.

As for the hard brake. Check the vacuum line to the brake booster. If that'* off or collapsed you will loose the brake assist, and it will be hard.
Danthurs is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2002 Olds Alero Hard Brake Pedal gmfan2014 Oldsmobile 7 12-10-2014 04:33 PM
Brake pedal to the floor - no brake pressure milty 1992-1999 7 05-12-2008 10:13 AM
Hard Brake Pedal? The Real Cause and Diagnostics john_doe 1992-1999 2 05-03-2007 03:18 PM
Brake pressure problem. Brake pedal travels to floor chilump 1992-1999 9 11-02-2006 11:37 AM
Gas pedal, brake pedal position younghelio 1992-1999 1 03-19-2004 12:10 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:44 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.