Question about 1991 Chevrolet S-10 Blazer

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1998 Chevy S10 pickup backup lights don't work

The backup lights on my 1998 Chevy S10 won't come on when it's shifted to reverse. Lights and fuse are OK. Is it the switch on the transmission? How can I fix this?

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  • Anonymous Feb 20, 2009

    97 chevy blazer back up lights dont work tried replacing both bulbs and checked fuse and still nothing

  • Anonymous May 11, 2009

    back up lights wont work changed bulb and fuse. what now

  • Anonymous Mar 13, 2014

    Location of the reverse light switch on a 1989 Chevy K2500 automatic transmission

  • Anonymous Mar 23, 2014

    Dash panal lights not working

  • Anonymous Mar 25, 2014

    changed all bulbs, fuses, and the thing on the side of the transmission. Have no clue as to what else it could be. Please help.

  • Anonymous Mar 27, 2014

    no back up lights where is the plug that goes to transmission 05 freestar. transmission was worked on. lights worked before, not now.

  • Joe brown Oct 04, 2015

    I have a 1999 S10 truck 4 cylinder manual trans and caint find the switch on trans reverse lights don't work checked everything

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Yes it screws in on right side of tramission and you will need a 7/8 inch deep socket to remove it. You may be able to clean the old one once it is removed. There is a little ball thatgets dirty and may you can get by with cleaning it. Good Luck. Ed

Posted on Sep 06, 2008

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Back up lights for a 1991 Chevrolet S10 Blazer won't come on. Changed the bulbs, changed the switch and changed the fuse. Any other suggestions?

Posted on Nov 22, 2008

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Chevy blazer back up lights wont work, checked bulbs, fuses, and changed part by transmission still wont work any other suggestions?

Posted on Aug 27, 2011

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Had a trailer hitch installed and when put into reverse it would blow my back up light fuse. I then cut the female receptical out of the circiut and I don't have any back-up lights. Did they wire into my harness wrong to cause a short and if they did how can I find it?

Posted on Feb 05, 2013

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Check the neutral start/backup light switch on transmission. Block the wheels and raise truck up enough to get under on drivers side. It will be a round black plu g with 3 wires going to it. Remove the plug from switch. have someone to shift the transmission into reverse.Using an ohm meter check for continuity between the outer two post on switch. If you find continuity between the two outer post only in reverse on the switch then the switch is good. Also check for continuity between outer post on switch to transmission case. There should be no continuity. Hope this will help you.

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I have a manual transmission and when I switch to reverse, the backup lights do not work. I have checked the wiring and it seems to be ok. The fuse is ok. The light bulbs are ok. I do not know what else to...


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2 Answers

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hello, the back up lights are usually on the same fuse as the tail lights so if they are working it's not a fuse, if the tail lights are not working replace the tail fuse. Otherwise the problem is most the backup light switch, on the manual transmission it's a separate switch located on the transmission on an automatic it is incorporated into the neutral start switch also located on the transmission but on the shaft where the shift selector attaches.

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O/D off flashing, backup lights not work,


The vehicle speed sensor is going bad . That's what is causing erratic shifting an the O/D light flashing .
Lamps, Backup The back-up lamp system consists of:
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  • the back-up lamp bulb(s) located in both rear lamp (13404) assemblies
  • circuit wiring and circuit protection
Circuit protection is provided to the transmission range (TR) sensor through fuse 30 (25A). This fuse is hot in RUN. With the transmission in REVERSE, the switch closes and power is provided to the back-up lamp bulbs through Circuit 140 (BK/PK). Ground is provided to the back up lamp bulbs through Circuit 57 (BK). The range sensor is located on the transmission at the manual lever.



Electric Testing Techniques You Need to Know how to read a wiring diagram .


The Trainer 32 How To Read An Automotive Block Wiring Diagram

ECM Inputs and Outputs Diagnosis http://www.bbbind.com/free_tsb.html Find free wiring diagrams here ! Enter vehicle info year , make , model an engine size . Under system click on lighting , then subsystem click on reverse lamps . Hit the search button , then click on the link .There is your back up lamp circuit check the fuse , check power at the range sensor switch in an out .


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The back up /neutral switch is on the left side off the transmission.
Go on your back under the car (steerside) and there it as.


Greetings .
Victor

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