C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

1999 ebcm

Thread Tools
 
Search this Thread
 
Old Oct 3, 2011 | 02:26 PM
  #1  
firefightr2dxtreme's Avatar
firefightr2dxtreme
Thread Starter
Heel & Toe
 
Joined: Oct 2011
Posts: 15
Likes: 2
Default 1999 ebcm

I need help guys. I am experiencing the dreaded ABS and traction control warning lights. I am finding tons of info on 2001-2004 models, but having a hard time finding info about my 1999. I believe the problem is a bad ground or connection, because it only happens when I hit a bump or pot hole while at cruising speed. I have braked hard on gravel, just to acitvate the ABS and it works fine, so that's why I believe the problem to be a bad connection. Does anyone have any pictures of where the EBCM is on my 99 and where it grounds to, that has caused people the most problems in the past? Any help is much appreciated.
Reply
Old Oct 3, 2011 | 02:28 PM
  #2  
dougbfresh's Avatar
dougbfresh
Le Mans Master
 
Joined: Nov 2005
Posts: 6,993
Likes: 25
Default

Pull your codes and post them here.
Reply
Old Oct 3, 2011 | 02:58 PM
  #3  
fendermender's Avatar
fendermender
Drifting
10 Year Member
 
Joined: Apr 2011
Posts: 1,454
Likes: 6
From: Pittsburgh PA
Default

In front of the engine on the left side. The module attaches to the pump assembly. It has a bunch of hydraulic lines running to it. And yeah, see if you have codes.
Reply
Old Oct 3, 2011 | 06:17 PM
  #4  
dmarkshark's Avatar
dmarkshark
Burning Brakes
 
Joined: Jun 2010
Posts: 1,014
Likes: 5
From: Rockwall TX
Default

Definetly check first for codes, I have a 99 and am betting its a wheel sensor and the codes will tell you which one. Anyway, thats what it was on my 99 when the light show happens after a bump and the car looses ground traction.
Reply
Old Oct 3, 2011 | 06:29 PM
  #5  
cdkcorvette7's Avatar
cdkcorvette7
Tech Contributor
 
Joined: Aug 2008
Posts: 2,902
Likes: 21
From: Oak Hill Virginia
Default

Originally Posted by fendermender
In front of the engine on the left side. The module attaches to the pump assembly. It has a bunch of hydraulic lines running to it. And yeah, see if you have codes.
The hydraulic lines run to the bpmv. The ebcm is bolted to the inboard side of the bpmv. There are six torx bolts holding it on.

+1 for pulling your codes.
Reply
Old Oct 3, 2011 | 07:28 PM
  #6  
dgrant3830's Avatar
dgrant3830
Tech Contributor
10 Year Member
 
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Default

I'll venture a guess that your steering wheel position sensor at the base of the steering column is going bad. I had this happen to my '99. The codes will tell the tale on this one.
Reply
Old Oct 3, 2011 | 10:16 PM
  #7  
firefightr2dxtreme's Avatar
firefightr2dxtreme
Thread Starter
Heel & Toe
 
Joined: Oct 2011
Posts: 15
Likes: 2
Default

Ok guys, I pulled my codes. It is showing:

Under TCS category

C1225-(LF excessive wheel speed variation)

Under RFA category

U1096-(Loss of communications with IPC)
U1064-(Loss of communications with BCM)
U1016-(Loss of communicaitons with PCM)

What do you guys think? maybe wheel speed sensor?
Reply
Old Oct 4, 2011 | 04:08 PM
  #8  
firefightr2dxtreme's Avatar
firefightr2dxtreme
Thread Starter
Heel & Toe
 
Joined: Oct 2011
Posts: 15
Likes: 2
Default

cleared all codes, and had it happen this morning, so the C1225 was the only current and active code.

dmarkshark, since you had the same problem, what was your fix? was it a bad connection at the wheel or what?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Oct 4, 2011 | 04:15 PM
  #9  
dmarkshark's Avatar
dmarkshark
Burning Brakes
 
Joined: Jun 2010
Posts: 1,014
Likes: 5
From: Rockwall TX
Default

Yep, I took the wheel off, checked and cleaned the connection and that was it. I think if you just check and clean it and put it back on, and then see if it throws codes again. IF it does, you may need more than just a cleaning. IF it doesn't throw codes then you know that was it. Good luck, let us know how it turns out for you.
Reply

Get notified of new replies

To 1999 ebcm





All times are GMT -4. The time now is 12:12 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE