Warning lights on C5
Thread Starter
Racer
Joined: Jul 2007
Posts: 427
Likes: 27
From: KY
Warning lights on C5??? (Need some Help)
The Active Handling and ABS lights are coming on and says, "Active Handling needs servicing and also ABS needs servicing"). However they go off when I stop and start back up later. Then after a couple days I start up and they come on again. Same thing and goes off same way. What needs to be done? It's on a 2001 and everything seems to be working fine, and no brake problem.
Last edited by NMYDNA; Jun 14, 2010 at 07:39 PM.
Burning Brakes
Joined: Feb 2007
Posts: 1,211
Likes: 4
From: Vancouver B.C.
I bet that sometime soon, perhaps just after you do something that causes your active handling to kick in the lights will not go out. It is likely the all too common EBCM problem. Go to ABSFIXER.COM for his EBCM repair - better than new for $150; the EBCM is an easy re and re.
Check your codes and post them.
Check your codes and post them.
Race Director
Joined: Dec 2004
Posts: 14,358
Likes: 1
From: Medford NJ
May sound strange but check the electrical connections in the accordion cover within the door hinges. Its common for one of the wires to fray and cause electrical gremlins. It did that to mine.
Thread Starter
Racer
Joined: Jul 2007
Posts: 427
Likes: 27
From: KY
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Safety Car
Joined: Jun 2006
Posts: 3,787
Likes: 2
From: Wildomar CA
99.9% sure that it is the electrical connector on the the door hinge area, the wheel speed sensor wire, or the Grounding sensor in the hood compartment. Check those three and I'll bet you find your problem. Good luck getting GM to figure out an electrical gremlin, they will just throw money at it until you are dead in the street.
Safety Car
Joined: Jun 2006
Posts: 3,787
Likes: 2
From: Wildomar CA
Do a search, you can check the codes yourself with the Driver Information Center, forget the button combo but a quick search will bring it up.
Thread Starter
Racer
Joined: Jul 2007
Posts: 427
Likes: 27
From: KY
So after reading your messages, I look at the Manual, said if both are on too push the reset button three times for a reset. However, after disconnecting the charger and starting it up a couple times the signals aren't coming on. Seems strange things happen with the 01 concerning electrical problems. Comsumer Report says that the 01 and 02 have the most issues with the electrical system. Let you know if the problem continues. Thanks again.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
This can be a number of issues. You need the codes to be sure. Post them up and we can dig deeper. Hope its not a C1214
Safety Car
Joined: Jun 2006
Posts: 3,787
Likes: 2
From: Wildomar CA
Very strange. Yesterday afternoon after coming back in I put the CTEK charger on it.
So after reading your messages, I look at the Manual, said if both are on too push the reset button three times for a reset. However, after disconnecting the charger and starting it up a couple times the signals aren't coming on. Seems strange things happen with the 01 concerning electrical problems. Comsumer Report says that the 01 and 02 have the most issues with the electrical system. Let you know if the problem continues. Thanks again.
So after reading your messages, I look at the Manual, said if both are on too push the reset button three times for a reset. However, after disconnecting the charger and starting it up a couple times the signals aren't coming on. Seems strange things happen with the 01 concerning electrical problems. Comsumer Report says that the 01 and 02 have the most issues with the electrical system. Let you know if the problem continues. Thanks again.
Burning Brakes
Joined: Feb 2007
Posts: 1,211
Likes: 4
From: Vancouver B.C.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Good point I guess. My EBCM was replaced under warranty but at huge cost to GM. They posted it at $1300+. The absfixer fix is cheap and easy to do DIY. I have a C1287 and my SWPS is still waiting to go in. It was much harder to diagnose but the part was only $50. I'll probably do it myself even though its not a simple fix. I'm still not convinced its not brake related so I'll replace my rotors and pads first.
Last edited by DeeGee; Jun 15, 2010 at 03:41 PM.
Le Mans Master
Joined: May 2006
Posts: 7,867
Likes: 250
From: Hillsboro OR
Good point I guess. My EBCM was replaced under warranty but at huge cost to GM. They posted it at $1300+. The absfixer fix is cheap and easy to do DIY. I have a C1287 and my SWPS is still waiting to go in. It was much harder to diagnose but the part was only $50. I'll probably do it myself even though its not a simple fix. I'm still not convinced its not brake related so I'll replace my rotors and pads first.
Melting Slicks
Joined: Nov 2001
Posts: 3,088
Likes: 1
From: NC
The Active Handling and ABS lights are coming on and says, "Active Handling needs servicing and also ABS needs servicing"). However they go off when I stop and start back up later. Then after a couple days I start up and they come on again. Same thing and goes off same way. What needs to be done? It's on a 2001 and everything seems to be working fine, and no brake problem.
several service TSB and the dealer flashed the PCM (???) and they went away.
