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Need to find a ground on a gm
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bobkyllo View Drop Down
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Joined: 14 Sep 2009
Location: minnesota
Points: 1557 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bobkyllo Quote  Post ReplyReply Direct Link To This Post Topic: Need to find a ground on a gm
    Posted: 10 Jul 2018 at 4:05pm
Guys I'm working on 99 Buick century. The windows do not work. I've got power to the switches. But I do not have a good ground. Can someone tell me where ground number 301 is located
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fixer1958 View Drop Down
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Joined: 13 Feb 2010
Location: kansas
Points: 2434 		Post Options Post Options   Thanks (0) Thanks(0)   Quote fixer1958 Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2018 at 4:35pm
Look in the door jamb where the wires go into the door. Peel back the tube they go through or cut it and look for broken wires from flexing with the door. It will be the fat wires. Momma switch don't work.....none do.
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DiyDave View Drop Down
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Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 54029 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2018 at 6:15pm
Most likely in the driver's door, gets the most use.  #301 is between 300 and 302...(sorry, couldn't resist)Wink
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desertjoe View Drop Down
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Joined: 23 Sep 2013
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Points: 13692 		Post Options Post Options   Thanks (0) Thanks(0)   Quote desertjoe Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jul 2018 at 4:14am
 I worked on a Chevy Cavalier and finally found a cluster of ground wires with a loose connection between the engine and body on driver side ,,!! Extremely hard to get to where it was. Why in heck would GM put that important connection in such an inaccessable location,,??  sheeese
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 24644 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jaybmiller Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jul 2018 at 6:14am
GM = Goofy Made, they built the car around that wire...
same as Honda CRV.. Wife's 99...door locks don't work when door closed BUT OPEN door all the way, switch/wires/locks work fine ! One of the 25 ! wires in the harness is 'funny' and needs the door taken OFF to fix ( add 1" of wire 25 times )
Yeah, like I'm GOING to do that.....
3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water
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Steve M Ind View Drop Down
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Joined: 12 Sep 2009
Location: Springport IN
Points: 68 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve M Ind Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jul 2018 at 8:06am
G301 is located under left front door sill. Remove plastic sill and ground connection is located there.
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