The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board > The 1973 - 1991 Blazers, Jimmys, and Suburbans Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-28-2018, 05:16 PM   #1
87Skier
Registered User
 
87Skier's Avatar
 
Join Date: Mar 2014
Location: Corvallis, OR
Posts: 601
Interior lights stuck on

My 89 Suburban's interior lights won't shut off. I tried slamming all the doors, messing with the door switches on every door but nothing seems to work except removing the wire from the fuse block. Also the rear passenger doors have never operated the interior lights.

Not sure where the issue is, but hitting a really rough road usually shuts them off temporarily before some more bumps makes them come back on.

I'm thinking there is an intermittent short somewhere, but don't know where to look. Any suggestions?
__________________
1972 GMC Jimmy Custom 4.8L (L20)/6L90E/NP205
1989 Chevy Suburban V2500 350/Turbo 400/4.11 gears
1996 Chevy Suburban K1500 350/4L60E
87Skier is offline   Reply With Quote
Old 03-28-2018, 07:13 PM   #2
franken
Registered User
 
Join Date: Jun 2013
Location: Somewhere
Posts: 2,062
Re: Interior lights stuck on

Turn the headlight switch knob to the right a little.
franken is offline   Reply With Quote
Old 04-02-2018, 01:04 AM   #3
87Skier
Registered User
 
87Skier's Avatar
 
Join Date: Mar 2014
Location: Corvallis, OR
Posts: 601
Re: Interior lights stuck on

Forgot to mention, it doesn't matter where the dimmer knob is. Turning it all the way down doesn't turn off the interior lights.
__________________
1972 GMC Jimmy Custom 4.8L (L20)/6L90E/NP205
1989 Chevy Suburban V2500 350/Turbo 400/4.11 gears
1996 Chevy Suburban K1500 350/4L60E
87Skier is offline   Reply With Quote
Old 04-03-2018, 12:19 AM   #4
1774btcrew
Senior Member
 
1774btcrew's Avatar
 
Join Date: Jun 2009
Location: Phoenix AZ
Posts: 3,678
Re: Interior lights stuck on

Maybe just try a new headlight switch?
__________________
1977 Crew Cab Shortbed with 4BT Intercooled Cummins Diesel and a 4L80E
AZPartsLocators on Instagram
1774btcrew is offline   Reply With Quote
Old 04-03-2018, 12:30 AM   #5
mongocanfly
Senior Member
 
Join Date: May 2015
Location: Alabama
Posts: 5,420
Re: Interior lights stuck on

I'd be searching for a necked or pinched wire...the door switches make the ground side of the wire circuit...if one of those wires is pinched or missing some jacket and grounded, the light will stay on....^^^but could also be the switch^^^
__________________
Mongo...aka Greg

1981 c30 lq9 nv4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
1955.1 ls3 tr6060...(under construction)(on hold)
2013 gmc z71. (daily driver)
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
mongocanfly is online now   Reply With Quote
Old 04-03-2018, 09:52 PM   #6
87Skier
Registered User
 
87Skier's Avatar
 
Join Date: Mar 2014
Location: Corvallis, OR
Posts: 601
Re: Interior lights stuck on

Quote:
Originally Posted by mongocanfly View Post
I'd be searching for a necked or pinched wire...the door switches make the ground side of the wire circuit...if one of those wires is pinched or missing some jacket and grounded, the light will stay on....^^^but could also be the switch^^^
That's what I was thinking. Was hoping someone on here had the same problem and there was a 'trouble' spot.
__________________
1972 GMC Jimmy Custom 4.8L (L20)/6L90E/NP205
1989 Chevy Suburban V2500 350/Turbo 400/4.11 gears
1996 Chevy Suburban K1500 350/4L60E
87Skier is offline   Reply With Quote
Old 04-04-2018, 03:27 PM   #7
Ski-me
Registered User
 
Ski-me's Avatar
 
Join Date: May 2012
Location: Colo Springs, CO
Posts: 701
Re: Interior lights stuck on

Yea, I'd check out the pin switches. Maybe change them out to new ones. I think they are reversed grounded or something. Just a little strange as I recall.
__________________
- Jeff

89' K5 Blazer, 2.5" lift, 35" tires
04' GMC Yukon XL, 3/4 ton, 8.1L
Ski-me is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:57 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright 1997-2013 67-72chevytrucks.com