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I have a ground issue on my 2005 GMC Sierra 1500 Crew Cab The lights are constantly flickering when the ignition is turned on It is not the battery or alternator I had those checked Any suggestions on where to find ground wire for lights

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I would be more inclined to look for a short in the power wire that is causing the overload button to keep recycling and turning the lights on and off.

Posted on Apr 23, 2014

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Posted on Jan 02, 2017

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SOURCE: need to know where sensor 1 (oxygen sensor) on bank 1 is located

It would be on the left header pipe as you sit in the truck. Its the sensor in front of the cat

Posted on Jan 17, 2009

bschilz
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SOURCE: 2005 GMC Sierra 1500 crew cab - speedometer not working

This is a well known issue with model years 2003 thru 2005. There is a chance GM will replace it under recall... Call the Chevy Customer Assistance Center 1-800-630-2438 to find out.

If not and you want it fixed, try Southern Electronics at http://www.instrumentclusters.com/.

Posted on Jan 01, 2010

SOURCE: flickering lights on 2004 gmc sierra. alternator changed

Hi J, The ground connections are on each of the units. that is to say there is one power feed to the dome and another to the instrument panel. From there each door is separately grounded via each of the door switches. If one is rusted, contaminated or damaged and not operating correctly, it will cause the dome light and the door warning on the instrument panel to flicker. regards John

Posted on Aug 13, 2012

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You may be lucky and the fuel filter is still on the inside frame rail under the drivers door. 2004 was the change off year and 2005 was defiantly the no serviceable fuel filter.
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2 Answers

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This is a well known issue with model years 2003 thru 2005. There is a chance GM will replace it under recall... Call the Chevy Customer Assistance Center 1-800-630-2438 to find out.

If not and you want it fixed, try Southern Electronics at http://www.instrumentclusters.com/.

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1 Answer

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A solid light can mean anything from a loose/faulty gas cap to a transmission issue.

This light comes on when the computer detects a fault of some sort in its diagnostic tests. If it keeps detecting this issue, the light will remain on. If the light turns off, then it has detected that the issue may no longer be present.

In order to find out what the exact reason was for your light, You need to have your car computer scanned to retrieve the code that the computer would have stored when the light triggered. Most garages will do this free of charge. The code will tell you what may have caused the light to initially turn on. Until you get this code, it's impossible to determine what parts need to be checked or replaced.

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1 Answer

Need to know where sensor 1 (oxygen sensor) on bank 1 is located


It would be on the left header pipe as you sit in the truck. Its the sensor in front of the cat

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