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No backup lights on 1990 chevy 1500 5 speed p/u

Replaced fuse,bulbs, backup switch on trans., and still no backup lights. Just started this 1 wk. ago

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  • Cars & Trucks Master
  • 5,341 Answers

One would need to use a voltmeter and start checking for where power is lost to the bulbs. With key on, you should find power at the transm. switch. Pull the connector and check for power on one of the two wires. With key on, and reverse gear selected, power should be exiting or passing through the switch-you would find power on the wire going to the rear bulbs.
If you find no power to the switch on the transmission, check if the fuse is powered with key on. If the fuse is passing power and nothing at the switch, start looking for a broken wire. If power to and through the switch, check for broken wire from switch to bulbs, check sockets too.

Posted on Jan 06, 2013

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Posted on Jan 02, 2017

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SOURCE: need to locate backup light switch on 1988 chevy 1500

I had the same problem. My backup lights wouldn't come on in when I put the auto. trans. shifter into the Reverse position. They WOULD come on briefly as I moved the shifter from Park position into Reverse, but would go off again when the shifter reached the Reverse detent. I got the solution from the Haynes service manual, in which the relevant switch is referred to as something like the neutral safety switch. Check on top of the steering column close to the firewall. Set the parking brake, then move the auto. trans. shifter into Neutral position. Get under the dash and rotate the neutral safety switch clockwise as far as it will go. Then move the shifter into the Park position, and your switch should be set. If the backup lights don't come on now when the shifter is put into Reverse position with the ignition switch 'on', there may be another problem.

Posted on Mar 08, 2009

  • 195 Answers

SOURCE: fuse box 1990 chevy 1500

Hello;
The fuse box is under the drivers side dah, on the firewall. Not sure about the cigarette adaptor but the fuses are marked as to what they go to. Hope this helps and please rate me;
Thanks
Rich
RPM Northwest

Posted on Feb 07, 2009

GM Elec
  • 1000 Answers

SOURCE: 2003 silverado 1500 v-6 brake lights dont work

ljones, Did you check the "VEH stop" fuse in the left side instrument panel fuse box. There are 3 stop light fuses, 1 for all the stop lights located in the under hood fuse box. 2 in the left side IP fuse box. 1 for the upper stop light and 1 for the lower stop lights. The fuse box in the IP is where the upper and lower stop lights split. Let me know.

Posted on Feb 27, 2009

csmock132
  • 4669 Answers

SOURCE: i have a 1990 chevy s10,all my lights work except my brake lights

Do you have power with a test light in and out of the switch? Do the turn signals work? Will the brake lights work if you play with the turn signal handle?

Posted on May 06, 2009

  • 1 Answer

SOURCE: the dash lights and tail lights on my 1990 chevy

mine did the same thing i replaced the headlight switch and its fine now

Posted on Jan 03, 2011

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