GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 3 of 3
  1. #1

    Default Rear Wheel Anti-Lock Code 4

    I have the old rear-wheel anti-lock braking system and I have been getting a solid brake light for about a week. Yesterday I checked the codes on the RWAL controller and it kept blinking 4 or 44, definitely 4... I'm not quite sure what that means... I cleared the code but haven't driven the truck any to see if it will come back. Any wisdom to offer?

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 277K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half

    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

  2. #2


    bump...anyone got any help? I cleared the code out, but I still haven't driven it anywhere. Thanks

  3. #3


    Ok, drove it around for a week and a few days here and there and no code. Then, I go through a drive through today, and it came back on. I think I found my issue that causes it. When I sit in the drive-thru line, I get bored and so I creep up on people's rears and sit there. To make sure I dont move, I put the truck in neutral and push hard on the brake pedal, using one foot to apply even more pressure to the first foot. I think I'm pushing the brake pedal down so hard at that time that some sensor in the brake system goes out of its acceptable range and throws the code. It's the only link/commonality I can find that would explain this...

Similar Threads

  1. anti lock brake probs
    By bigproskine in forum Lifted & Offroad Suspension
    Replies: 8
    Last: 11-07-2010, 03:28 PM
  2. Anti lock brake pulses at low speed
    By dslvolks in forum Lifted & Offroad Suspension
    Replies: 0
    Last: 07-31-2009, 02:24 PM
  3. Anti-Lock Break Question
    By 178kchevy in forum General Chevy & GM Tech Questions
    Replies: 1
    Last: 03-20-2009, 08:30 AM
  4. speedo/anti lock adjustments
    By bob13 in forum Lifted & Offroad Suspension
    Replies: 6
    Last: 03-13-2009, 01:28 AM
  5. Anti-Lock Brake problem, maybe?
    By pspreston in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 4
    Last: 07-30-2008, 11:08 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts