Electrical Problems!! Help!!!!
Thread Starter
Instructor
Joined: Apr 2007
Posts: 227
Likes: 1
From: Miami Florida
Electrical Problems!! Help!!!!
Ok here we go. I will try to describe everything as best as possible. Car is a 1999 C5 Coupe with 64,500 miles and auto trans. Car has Column Lock Bypass installed. Started off by switching from MPH to KPH on it's own. Switches back and forth randomly by it self. At times the switch will not work to switch back to MPH. Sometimes it will. I installed the CLB myself amd never got any "service column lock" messages. Recently started getting service column lock message as well as "pull key and wait 10 sec." message. When I pull the key and wait the message to pull key goes away when I re-insert it. However when I start car and put it in gear to drive away it sometimes shuts off. Car is all original except for SLP loudmouth exhaust. No clue where to even start. Some suggest dash cluster others suggest body control module. I know there is a vast amount of knowledge on here about these cars and your help would greatly be appreciated. 
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Sounds like the CLB has failed. Some were good quality and I hear that others have failed on people. First you should check the state of your battery which is more likely to cause issues.
Burning Brakes
Joined: Sep 2007
Posts: 945
Likes: 1
From: Tigertown Ohio
Thread Starter
Instructor
Joined: Apr 2007
Posts: 227
Likes: 1
From: Miami Florida
Ok here we go. I will try to describe everything as best as possible. Car is a 1999 C5 Coupe with 64,500 miles and auto trans. Car has Column Lock Bypass installed. Started off by switching from MPH to KPH on it's own. Switches back and forth randomly by it self. At times the switch will not work to switch back to MPH. Sometimes it will. I installed the CLB myself amd never got any "service column lock" messages. Recently started getting service column lock message as well as "pull key and wait 10 sec." message. When I pull the key and wait the message to pull key goes away when I re-insert it. However when I start car and put it in gear to drive away it sometimes shuts off. Car is all original except for SLP loudmouth exhaust. No clue where to even start. Some suggest dash cluster others suggest body control module. I know there is a vast amount of knowledge on here about these cars and your help would greatly be appreciated.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Thread Starter
Instructor
Joined: Apr 2007
Posts: 227
Likes: 1
From: Miami Florida
Took the whole dash apart today looking for the culprit. I think I may have narrowed it down to the switch panel on the side of the dash when the dash starts acting up I tap on it an it stops. Ever heard of this?
Thread Starter
Instructor
Joined: Apr 2007
Posts: 227
Likes: 1
From: Miami Florida
Yes I am reffereing to the DIC controls. Anyone ever heard of these going bad. They work intermittently when they want to then all of a sudden stop working. Seems like there may be a short on the E/M switch. Can this part be replaced or do you have to replace the whole dash. HELP!!!!!!!
Le Mans Master
Joined: Dec 2000
Posts: 9,891
Likes: 1,829
From: Hot Springs AR
HTH, and have a good one,
Mike
Le Mans Master
Joined: Jul 2002
Posts: 7,370
Likes: 8
From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
It sounds like you have 2 problems;
1. the DIC controls, the switch is bad and is randomly switching between MPH and KM
2. your CLB has failed and needs to be redone.
1. the DIC controls, the switch is bad and is randomly switching between MPH and KM
2. your CLB has failed and needs to be redone.
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
The DIC controller can be replaced by itself, however you have to remove the cluster to get to it as its screwed into the cluster from the rear. I was thinking the CLB may have a problem due to his original posting...maybe he should put it back to normal and try again. As Runamuk mentioned, this might be two problems rather than a single cause.
Thread Starter
Instructor
Joined: Apr 2007
Posts: 227
Likes: 1
From: Miami Florida
Anyone ever heard of a DIC control going bad? What is the part number for this part? CLB was working fine. Started acting up and displaying "service column lock" message when I disconnected the positive terminal from the battery and later re-connected it.