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I have a 2003 Impala with 150K on it. It is the 3800 engine. I started have several electrical problems. SES light with O2 codes so I replaced rear bank sensor and Catalytic convertor. Traction control light and ABS light, so I replacd LR speed sensor and replaced broken wiring harness on LF. Security light comes on randomly also. It has made me wait to start it a couple of times. These lights come on at all times and go back off randomly. The ABS doesn''t work still either. Any ideas or are these all seperate issues?

Submitted: 607 days and 18 hours ago.
Category: Chevy
Value: $15
Status: AWAITING CUSTOMER ACTION
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Optional Information

Optional Information:
2003 Chevrolet Impala LS 3800

Answer

Hello XXXXXX, start by checking the wiring under the hood next to the a/c accumulator. These wires can rub on the acculuator and short out. This can cause a lot of electrical problems. If this is okay then you may also be having a problem with the vehicles body control module. It controls the functions of the circuits you are having a problem with.

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Expert: BOBBYSS
Pos. Feedback: 99.6 %
Accepts: 1987
Answered: 7/11/2008

Technician/Service Advisor

ASE MASTER CERTIFIED, AA DEGREE AUTO/DIESEL TECH. 13YRS. CHEVY EXPER.

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