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Man of Steel
New User
Jul 3, 2016, 10:09 AM
Post #1 of 3
(1508 views)
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1998 GMC Sierra 350
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Signal (left only) goes solid when brake light applied. Pulled all lamps swapped exchanged sides replaced, cleaned tested sockets. Fully inspected rear trailer hook up, pulled apart harness, also inspected harness at other locations. Still occurs ( on dash indicators) when rear harness detached, and all front lamps removed. Replaced the signal light switch on column, and blinker relay, lamps. Cleaned and added grounds to front and rear. Brake light switch has not been replaced but works fine on the right side, i dont suspect it the culprit. Please weigh in. I am a little challenged on this one.
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Discretesignals
Ultimate Carjunky
/ Moderator

Jul 3, 2016, 10:47 AM
Post #2 of 3
(1481 views)
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Re: 1998 GMC Sierra 350
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If you take the right tail lamp assembly and plug it into the left tail lamp connector, does it do the same thing? Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Man of Steel
New User
Jul 4, 2016, 7:25 AM
Post #3 of 3
(1460 views)
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Re: 1998 GMC Sierra 350
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Yes swapped everything. I have thrown in the towel its at the mechanic.
(This post was edited by Man of Steel on Jul 4, 2016, 7:27 AM)
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