2009 impala police

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Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=115395
Printed Date: May 05, 2025 at 1:59 AM

Topic: 2009 impala police

Posted By: dfc2
Subject: 2009 impala police
Date Posted: July 31, 2009 at 7:21 PM

Can anyone tell me if there is a wire int he harness that goes to ground when the police impala is placed in park?

We have sirens that have a park kill feature that shuts off the siren when the wire detects ground. this stops the siren from blaring when you bail out of the car in a hurry.

anyone have any info?

DFC2

Replies:

Posted By: dfc2
Date Posted: July 31, 2009 at 7:22 PM

Our patrol cars are 2009 Impala Police models. We have a couple 2006 models, if anyone knows about them as well.

Thanks.

Posted By: 91stt
Date Posted: July 31, 2009 at 10:20 PM

I don't have the diagrams for the 2009 but believe that are the same as the 2006-07 models. The schematics show a Park/Neutral signal to the ECM that is located inside the air cleaner assembly. The color I have is ORANGE / Black but check before you make a connection. Diode isolate this connection with the band towards the P/N signal wire.

Posted By: yimke
Date Posted: August 03, 2009 at 9:32 AM

Couldn't you just grab the park/neutral switch wire?

Posted By: 91stt
Date Posted: August 03, 2009 at 10:10 AM

yimke] wrote:

Couldn't you just grab the park/neutral switch wire?

The mode switch is inside the tranny. The easiest place to access this wire is at the ecu.

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