Electrical ghosts

CGJERSTAD

MEMBER
1998 CHEVROLET SUBURBAN
V8
4WD
AUTOMATIC
192,000 MILES

1998 chev suburban Interior and taillights intermittently go out frequently, replaced the light switch, problem has not gone away. Ran a new ground from the motor to body to frame? What can I do to stop the maddness?

Thursday, February 17th, 2011 AT 4:50 PM

5 Replies

KHLOW2008

MECHANIC
41,814 POSTS

When lights fails, how did you get them to come back on?
How often does it occurs and how long does it last?
Have you tried checking the fuses and wirings?

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Thursday, February 17th, 2011 AT 6:23 PM

CGJERSTAD

MEMBER
3 POSTS

Sometimes they will just go back on, sometimes if I hit the dash they will come back on. Fuses are good wiring? Thought maybe it was a ground so I regrounded the main things, today I will re ground the dash to the body. And check the terminals at the back of the switch for corrosion or heat.

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Thursday, February 17th, 2011 AT 6:41 PM

KHLOW2008

MECHANIC
41,814 POSTS

From the wiring diagram I do not see any taillight relays so I believe the problem is due to a loose connection somewhere as vibrations to the dash works sometimes.

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Thursday, February 17th, 2011 AT 6:49 PM

CGJERSTAD

MEMBER
3 POSTS

So where are the grounds under the dash located, then I could check them and not miss any. Yes I thought maybe a relay, but when I went to the parts store they did not list any, does the switch then have the relay built in?

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Thursday, February 17th, 2011 AT 7:02 PM

KHLOW2008