My service stabiltrak and service traction control lights come on immediately from the time the car starts.....The ABS light is not lit up on the dash at this time nor have i even seen it light up...I have ran a diagnostic tool on it with results being C056D-00 which says Electronics Control Unit Hardware, stored in history and currently active as well...It has intermittently displayed Circuit Pump-Stuck as well which usually clears....These lights are driving me crazy and i would like my abs fixed asap....I have checked for bad grounds, checked the wheel speed sensor wiring, cleaned all 4 wheel bearings and wheel speed sensors and checked for vacuum leaks as well....Can someone please help me diagnose this before I go crazy lol.....Thanks
Service Stabilitrak/Traction Control w/ ABS code C056D-00 PLEASE HELP!!
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wjarms
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Well called dealer to make appointment this morning and it's going to be a few weeks to get my car in.....He said the special warranty for the battery cable replacement didn't apply because I have a rebuilt title.... Can someone please confirm this?
Also if it doesn't what do I need to change just the cable from negative post to radiator support? Or also the small voltage sensing wire?
Also if it doesn't what do I need to change just the cable from negative post to radiator support? Or also the small voltage sensing wire?
Well that rebuilt title business explaines why the recalls weren't performed......Chevy couln't find the car (or its owner).
Ok....for the record, in your case or anyone else with a rebuilt title.....any recall still applies but GM (and all other manufacturers) cancel the warranty.
OP, just purchass the cable from your dealer.....off with the old, on with the new....it is a relatively short run all performed under the hood.....15 minutes on a bad day.
I recommend you do this before you take the car in for the recalls.
Rob
Ok....for the record, in your case or anyone else with a rebuilt title.....any recall still applies but GM (and all other manufacturers) cancel the warranty.
OP, just purchass the cable from your dealer.....off with the old, on with the new....it is a relatively short run all performed under the hood.....15 minutes on a bad day.
I recommend you do this before you take the car in for the recalls.
Rob
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The schematic shows the small wire is connected to the Body Control Module. It's not clear to me if it's just for sensing or if that's the power return for the BCM. But since the BCM is the central brain of the car - yeah, I'd say that has a lot to do with it. If the BCM isn't happy, nobody is going to be happy. :grin:
OK so here's an update.. I changed all that and have noticed using an ohm meter there's is very little to no resistance with the car off... But as soon as key is turned on the ground from battery to frame jumps up to 5-7ohms.... Same as when running
And that wire is connected to ground correct so it shouldn't be a power return? Am I right or not? It just seems the brain for all the braking system is faulting as soon as power is applied and it recognizes that.... Also when car was started voltage was 14.7-14.8 after running at idle it's down to 13.9 pretty quickly, maybe 3-5 mins....
Any more help would be greatly appreciated. I would love to fix this thing before Wednesday, which is another long drive for me
And that wire is connected to ground correct so it shouldn't be a power return? Am I right or not? It just seems the brain for all the braking system is faulting as soon as power is applied and it recognizes that.... Also when car was started voltage was 14.7-14.8 after running at idle it's down to 13.9 pretty quickly, maybe 3-5 mins....
Any more help would be greatly appreciated. I would love to fix this thing before Wednesday, which is another long drive for me
Someone please review the above post as well but wanted to add a little more information......With my Innova Monitor i have also discovered that the CAT, EVAP, O2S, and HTR lights are flashing red....I did have the battery unhooked for 20-30 mins but have also driven the car to let the computer reset.....I need some expert knowledge bad...And no sooner than i reset the ABS codes, the car beeps and they flash back up !!
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24,125 Posts
This sounds like a general communication failure. Get that cable replaced and then reset the system. As for the increased load with the key on I would expect this - the key turns on all the electrical systems - fuel pump, dash, HVAC blower control, ECU, etc. There will be a load with the key on that simply isn't there with the key off.
I have replaced the battery cable.. Shouldn't it have reset while the change was being done or is there another way to do it.... I have tried clearing codes as well but none exist other than the abs codes for electronic control unit but I swear I think it's a connection issue
You CANNOT measure resistance on a wire with ANY current flowing through it, the proper check would be to measure voltage drop under load--starter-ignition on etc.
also sounds like you have a bunch of stored codes, order one of the Bluetooth obdII code readers-amazon $9-$12 requires a smart phone
I have a very nice innova code reader $250, reads Dtc, Srs, and abs.... No codes are stored at all, no engine codes, only the abs code that reads electronic control unit hardware.. The ground wire has been changed and shouldn't be an issue, I have literally checked everything I can think of an... I just want the stabilitrak and traction control fixed..... The live sensor readings are from the diagnostic tool which also has a yellow light displayed that's tells engine condition, indicating there are problems.. They're all o2s,heat,evap, lights flashing
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Good - not water. Water destroys car electrical systems.
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