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Old 04-15-2015, 10:20 AM   #10
ChevyAV03
 
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Drives: 03 Z71 AV PM; 14 Convert 2ss/rs AGM
Join Date: Aug 2014
Location: PA/SC
Posts: 72
my bet is it's form a mod that you spliced some wires to get something to work and it's an adverse effect from that. Possibly the same wire that tells when it is in park is someone how connected to the braking wire?

See if you can find a schematic of the wiring and see if any of your mods are tied into the wire related to that wire that tells when it is in park or not.

Otherwise you have something wired that is causing feedback in the wiring.

Any stereo or light kit mods?

Of course this is just a baseless assumption but anything that requires feedback through circuits and wiring can cause either feedback or somehow there is a bare wire now grounding when you brake the car.

now finding where it is will be tricky, have you tried braking while in neutral and the parking brake on to see if it is a hard press of the brake itself causing the issue. Did you install anything that is connected near the brake pedal possibly?

Just some thoughts, good luck on resolution.
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