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Old 04-23-2011, 03:03 PM   #1
blamb88
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Default Service ESC

Hey CMF help me out, my car is acting up. Now this is going to be the second time i took the car back to the dealership for the same thing that keep popping up on the indicator saying reduced engine power, service esc and then says esc off followed by service traction. The first time this happened the dealership reset the computer and after 2 days problem never reoccurred. So i get the car back and 1 1/2 days it starts again same messages indicating. anyone what this is?
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Old 04-23-2011, 03:48 PM   #2
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Default Re: Service ESC

Do you happen to know if there were any codes stored that may have been written down on the service receipt? It could be something as small as some corrosion on a connector or maybe a bad module. If you have a code that would be helpful.
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Old 04-23-2011, 04:27 PM   #3
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Default Re: Service ESC

I had something similar like this happen to mine last year twice within a few months of each other. First time was a brake circuit and second time they said it was corrosion on a part. I can't remember which part. It was all covered under warranty luckily.
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Old 04-23-2011, 04:54 PM   #4
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Default Re: Service ESC

didnt think to post up the codes, i found the first invoice when i took it in. it says P2176, P2101, P1516 but they cleared the codes, checked all wires and found no problems.
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Old 04-23-2011, 06:06 PM   #5
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Default Re: Service ESC

DTC P1516: Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
DTC P2101: Throttle Actuator Position Performance
DTC P2176: Minimum Throttle Position Not Learned

Something like this could be an issue with terminal tension at the throttle body connector, could be the throttle body itself, or the ECM is not interpreting data properly. Most likely a throttle body issue, but you will need to take it back to the dealer to get it taken care of.
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Old 04-24-2011, 07:04 AM   #6
Richard
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Default Re: Service ESC

It's funny, we had a very snowy and icy winter and I think I noticed the ESC activate once or twice the whole winter. It's a great system, but it only activates when the car goes into a real skid. I thought with all the snow and ice, I would have seen the message more, but all I ever saw was the Traction Active message.

I will say the Malibu is a heavy car, so it's very stable on the road, even in the snow and ice.

Anyway, most of the time, these problems are sensor related. A sensor probably just needs to be replaced.
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Old 04-24-2011, 05:56 PM   #7
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Default Re: Service ESC

The Service ESC is more than likely due to the throttle control codes. If there are throttle control codes the engine control module can't perform its part of the function by reducing torque. The ECM sends a message to the EBCM that it can't do its job and the EBCM sets the Service TC and ECS messages.

Here are the diagnostic procedures for those codes:




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Old 04-25-2011, 06:50 PM   #8
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Default Re: Service ESC

My husband finally figured out what was going on with my 09 Malibu LT2. Last Nov. my Service ESC and Service Traction lights went off and my car was sputtering and stalled. When I started the car I drove it to the dealership and was told by service there that since the car was no longer acting up they could not find any codes on the computer; needless to say; it never happened again...until 3 days ago. While on an outing; the Service ESC and Service Traction lights came on. The car was sputtering and had little power at times. We crawled home and the next morning when I started the car there were no more codes or issues. Today on my way to work; both service lights came on again and NOW the engine light was on. The car could barely stayed started and was sputtering and idling poorly at about 500 RPMs. I immediately brought it to a GM dealership and when hooked up to the computer was told that the car was operating on only 3 cylinders and there was an issue with the one of the cylinders. The terminal was replaced by the dealership; codes reset and everything seemed fine. Happy...I drove the car home BUT 5 minutes out of town the car started stuttering and felt like it was misfiring around 1500 RPMs/50-55 MPH; no service lights at all, just running so poorly. My husband tore apart my car tonight and looked at the affected cylinder terminal and found 2 broken wires in the injector harness. He spliced both wires; reconnected wires and CAR NEVER RAN BETTER.....Took the car for a long ride afterwards and no issues. I will see in the am how it goes but I feel pretty confident my husband found the issue. Broken wires in the injector harness causing Service ESC, Service Traction, Engine Light, Sputtering, Misfiring issues with Malibu.
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Old 04-25-2011, 10:25 PM   #9
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Default Re: Service ESC

Next thing to do is take it back to the dealer and show them, then ask them to replace the harness so no corrosion sets in on the repairs.
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Old 04-26-2011, 06:10 AM   #10
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Default Re: Service ESC

Dear blamb88,

Thank you for posting your situation with your Malibu. I agree with DrivenDaily, get your vehicle back into the dealership. Depending on your mileage, this issue could be covered under your warranty. However, the dealership will have the specific warranty details to confirm this.

If you have further questions or concerns, don’t hesitate to contact me.

Michelle P., Chevrolet Customer Service
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