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99 Suburban right headlights dim???
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Jhenriksen
User
Jun 16, 2012, 7:28 AM
Post #1 of 7
(3973 views)
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99 Suburban right headlights dim???
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I have a 99 chevy suburban 2500, 7.4L Last night coming home the right head light got real dim, figured it was the bulb. When I got home I flipped on the high beams, right side still real dim, as is the marker light. I've seen this on trailers before and it usually is a bad ground, Is there a separate ground for each side, or is there something going on in the switch?
(This post was edited by Jhenriksen on Jun 16, 2012, 8:47 AM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 16, 2012, 7:48 AM
Post #2 of 7
(3959 views)
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Re: 99 Suburban right headlights dim???
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This is where the headlights are grounded
On the radiator support, near the left side headlamp
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Jhenriksen
User
Jun 16, 2012, 8:47 AM
Post #3 of 7
(3940 views)
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Re: 99 Suburban right headlights dim???
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I'm fairly sure its the dimmer / turn signal switch. I noticed that when the high beams are on the low beams are also on but very dim, And when the low beams are on the high beams are also on but again very dim. Also the right turn signal doesn't want to work, It just dimmly lights the bulbs but no flash, left side works fine. Bulbs all work with the Hazard so I'd say the bulbs are good.
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Jhenriksen
User
Jun 16, 2012, 9:04 AM
Post #4 of 7
(3933 views)
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Re: 99 Suburban right headlights dim???
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Ok, now im thinkin if it was the dimmer switch why are my left side head lights so much brighter than the right. would'nt they both be dim??
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 16, 2012, 9:46 AM
Post #5 of 7
(3923 views)
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Re: 99 Suburban right headlights dim???
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I don't know. You're the one jumping to these conclusions. I just didn't feel like debating you. You haven't even identified which of 3 different headlight circuits your truck has yet.
The ground for the right side is behind the battery if you're interested.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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daddysflying
New User
Dec 5, 2015, 4:40 PM
Post #6 of 7
(2483 views)
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Re: 99 Suburban right headlights dim???
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I'm having a similar issue; dim low beams, properly bright highs. I've read about the drl/low beam issues, and now I'm wondering, since the previous owner had the entire steering wheel and dash apart for computer changeout, that he did something to the relay or wiring with the lows/drls? I cleaned them up, but they are still dim.
I want to check the grounds out, bc it seems like that might have something to do with it, but since he's gone into the steering column, I'm prone to think that's where the problem is. Any guidance here will be greatly appreciated.
Wendell
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 5, 2015, 4:46 PM
Post #7 of 7
(2479 views)
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Re: 99 Suburban right headlights dim???
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This question is 3 years old. Please start a question of your own if you need help with something and don't respond to old questions.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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