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2015 gmc parking lights


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ziggyb222 
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Posted: March 08, 2015 at 10:55 AM / IP Logged Link to Post Post Reply Quote ziggyb222
Doing a 2015 Gmc Sierra work truck six cylinder.. Testing the the
GREEN/ grey wire white plug at bcm...Shows 12 volts all the time...unless you turn the switch all the way counter clockwise..the it goes to zero... And I looking in the right place..no othe green grey in that plug
howie ll 
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Posted: March 08, 2015 at 12:09 PM / IP Logged Link to Post Post Reply Quote howie ll
Do you need a relay to break the wire?
ziggyb222 
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Posted: March 08, 2015 at 12:13 PM / IP Logged Link to Post Post Reply Quote ziggyb222
Howie...putting in a Evo All with t-harness..the Evo puts out a negative parklight...am I just being confused....Testing the wire..shows 12 volts all the time...unless you turn it all the way off..then it drops to zero...
howie ll 
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Posted: March 08, 2015 at 12:14 PM / IP Logged Link to Post Post Reply Quote howie ll
Does the EVO work?
ziggyb222 
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Posted: March 08, 2015 at 12:19 PM / IP Logged Link to Post Post Reply Quote ziggyb222
Yes..it starts the truck with the three x lock...from the OEM fob..that is all fine...Every guide I have looked at says light green grey in the white plug at the bcm...just not sure why it does not go to zero volts when I turn on the parking lights???
howie ll 
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Posted: March 08, 2015 at 12:22 PM / IP Logged Link to Post Post Reply Quote howie ll
Negative switching?
ziggyb222 
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Posted: March 08, 2015 at 12:37 PM / IP Logged Link to Post Post Reply Quote ziggyb222
the module seems to be putting out a negative signal...
howie ll 
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Posted: March 08, 2015 at 12:46 PM / IP Logged Link to Post Post Reply Quote howie ll
Then that's your answer, not cut, apply a ground.
ziggyb222 
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Posted: March 08, 2015 at 4:40 PM / IP Logged Link to Post Post Reply Quote ziggyb222
I am still confused.... checking the wire while the lights are in auto it shows 12 volts... when you switch to parking lights and the lights come on it still read 12 volts.... What am I missing...or Iam I just having a brain cramp????
Ween 
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Posted: March 08, 2015 at 4:59 PM / IP Logged Link to Post Post Reply Quote Ween
http://www.gmupfitter.com/files/media/photo/578/Sierra_Silverado_Electrical_Body_Builders_Manual_Service_Manual_2015_en_US.pdf   pages 20, 43, 487, 488
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