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 6 of 6
  1. #1

    Default "Service Brake System" accompanied by SERIOUS truck freakout. PLEASE help us!

    Hi everyone!

    We're new here and are in desperate need of any advice from someone who has experienced/heard of this problem.

    We have an '06 2500 HD Silverado with 43k miles. Here are the symptoms and, for the record, it only happens during/after rain. Obviously moisture is getting in somewhere but we can't figure out where and neither can our mechanic.

    This has been going on since December. And, believe it or not, it has never happened during business hours! So every time we have dropped it off for service, they have not been able to replicate. Assuming because whatever was wet had time to dry off.

    -ABS light comes on
    -Service Brake System displays
    -Chiming noise
    -Can't accelerate above 20-30 or it just goes into neutral & revs
    -Transmission slips during acceleration - after being stopped
    -Shudders when braking

    Thanks in advance for your thoughts/suggestions!


    ---------- Post added at 09:38 AM ---------- Previous post was at 09:18 AM ----------

    One more symptom I forgot:

    -needle on speedometer bounces all over the place

  2. #2


    The dealer needs to get involved so they can do a computer diagnosis. That's crazy!
    Trenton, FL.
    2010 Chev Silverado LT, 5.3L V8, 6 Spd Auto, 4x4, Z71, HD Cooling, 3.42 Locking Rear End, Rough Country Leveling Kit, Smittybilt Nerfs, Sprayed Bedliner, DDM HIDs, LEDs

  3. #3


    the problem looks like a coputer issiu,over here they charge you 100-130 dollar just for to hook it up

  4. #4


    I know, it's nuts! We've had diagnostics done 8-10 times by now and nada. They charged us over $1k to replace some computer that was supposedly bad. That didn't make a lick of difference. The only thing they've done that worked (only as a bandaid) for 3-4 months was coating the ground wire in grease...

    thanks for the reply!

  5. #5
    Legend Mean_Green_95's Avatar
    Join Date
    Apr 2009
    Baton Rouge, Louisiana, United States


    Well there is your first clue. If coating the ground wire made some changes then start looking at any and all grounds. Could be a bad ground wire somewhere.
    2010 Equinox LT
    2.4, 6 speed auto, power lift gate, remote start, bluetooth, xm.

    1995 Cheyenne C1500 ext. cab(my baby, my first truck)
    5.0, 5 speed, Silverado appearance package, power nothing, bucket seats and console Silverado, painted black interior, eBay halo headlights, eBay chrome tails, eBay cai, dual Flowmaster 40's w/no cats, 15x7 American Racing Hopsters, Walmart fog lights, SS mirrors

  6. #6

    Default was a solution ever found for this???

    my 03 sierra 2500 is doing the exact thing as described in the first thread of this post. I am curious if it was ever fixed? and what was it? I was advised by a friend that works at a Chevrolet dealership to ck into my ignition switch but if i could get some advise from someone who's already been through this it would be an amazing help!

Similar Threads

  1. 2000 Z71 "service 4wd" and campaign codes
    By Stan S in forum GM Powertrain
    Replies: 2
    Last Post: 12-15-2009, 05:42 PM
  2. 03 "Service 4 wheel drive" message
    By 03z71ls in forum Member Introductions
    Replies: 11
    Last Post: 09-26-2009, 12:09 AM
  3. My "system" in my truck
    By MD4x4 Fireman in forum Audio, Video & Gadget Tech
    Replies: 18
    Last Post: 03-11-2008, 05:25 PM
  4. 95 Chev Suburban "service engine light"
    By slidercoach in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 2
    Last Post: 02-11-2007, 09:11 PM
  5. Warning light on Dash.."SERVICE 4WD"
    By Shambion in forum Chevy Trailblazer Forum (GMC Envoy)
    Replies: 1
    Last Post: 12-24-2005, 02:22 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