Thread: No backup lights

Page 1 of 2 12 LastLast
Results 1 to 20 of 27
  1. #1 No backup lights 
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    890
    Thanks (Received)
    1
    Likes (Received)
    9
    Dislikes (Received)
    0
    My backup lights are not working. The fuses are good and I’m not getting power to the harness. Where in the heck is the sensor on these? I’ve never had this issue on any of my past Prix. Any help appreciated.
    2017 Buick Regal 2.0 Turbo (SOLD 2007 Grand Prix GT. Front and rear PLOGs, 1.8 roller rockers, CAI, HPTuned, 3.4 pulley, TEP transmission, 90# springs, rollmaster single chain, Impala front brakes d/s rotors.) Past (Pontiacs) Grand Prix- 97 GT, 03 GT, 04 GT, 04 Comp G, 78 Trans am, 92 Trans Am.
    Reply With Quote  
     

  2. #2 Re: No backup lights- 2007 GT 
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    890
    Thanks (Received)
    1
    Likes (Received)
    9
    Dislikes (Received)
    0
    Mods- I meant to post this in general section. Sorry
    2017 Buick Regal 2.0 Turbo (SOLD 2007 Grand Prix GT. Front and rear PLOGs, 1.8 roller rockers, CAI, HPTuned, 3.4 pulley, TEP transmission, 90# springs, rollmaster single chain, Impala front brakes d/s rotors.) Past (Pontiacs) Grand Prix- 97 GT, 03 GT, 04 GT, 04 Comp G, 78 Trans am, 92 Trans Am.
    Reply With Quote  
     

  3. #3 Re: No backup lights- 2007 GT 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    check the trunk harness it likes to break where it comes through the body by the hinge.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  4. #4 Re: No backup lights 
    GTX Level Member wstefan20's Avatar
    Join Date
    Aug 2017
    Location
    Raytown, MO
    Posts
    1,152
    Thanks (Received)
    33
    Likes (Received)
    63
    Dislikes (Received)
    1
    By no power, where did you measure? It's very common for the wires to corrode through several inches. Test the wire on the right rear tail a few inches back.
    Reply With Quote  
     

  5. #5 Re: No backup lights 
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    890
    Thanks (Received)
    1
    Likes (Received)
    9
    Dislikes (Received)
    0
    I tested at the harness in the trunk that attaches to the backup lamp bar.
    2017 Buick Regal 2.0 Turbo (SOLD 2007 Grand Prix GT. Front and rear PLOGs, 1.8 roller rockers, CAI, HPTuned, 3.4 pulley, TEP transmission, 90# springs, rollmaster single chain, Impala front brakes d/s rotors.) Past (Pontiacs) Grand Prix- 97 GT, 03 GT, 04 GT, 04 Comp G, 78 Trans am, 92 Trans Am.
    Reply With Quote  
     

  6. #6 Re: No backup lights 
    GTX Level Member wstefan20's Avatar
    Join Date
    Aug 2017
    Location
    Raytown, MO
    Posts
    1,152
    Thanks (Received)
    33
    Likes (Received)
    63
    Dislikes (Received)
    1
    Strange... best place I've found for schematics on our cars is actually autozone. Just register for a free account, search under repair guides, wiring diagrams and there's the diagrams for literally every system in both newer gens of our GPs! Watch out, some of the colors may not be correct, but if you can read the connector positions, I've never seen one wrong yet! I'll take a look some-time and see what I can think of.

    In the meantime, are there any other issues or lights (especially interior) that are not functioning properly?
    Reply With Quote  
     

  7. #7 Re: No backup lights 
    GTX Level Member wstefan20's Avatar
    Join Date
    Aug 2017
    Location
    Raytown, MO
    Posts
    1,152
    Thanks (Received)
    33
    Likes (Received)
    63
    Dislikes (Received)
    1
    Looks like the bcm controls the backup lamp relay. Probably under the driver's dash, but I'm sure someone will chime in on the exact location.

    Before I tested that, I would do a power drop test to test the ground to make sure you don't have a bad ground to the lamp, but I wouldn't think so since pretty much the whole rear end is tied to that ground.

    Here's the schematic I found on autozone for the backup lamps for an 05 which should be the same. If the ground is good, I'd test the relay.

    No backup lights Attached Images
    Reply With Quote  
     

  8. Thanks rickisrad thanked for this post
  9. #8 Re: No backup lights- 2007 GT 
    GTX Level Member wstefan20's Avatar
    Join Date
    Aug 2017
    Location
    Raytown, MO
    Posts
    1,152
    Thanks (Received)
    33
    Likes (Received)
    63
    Dislikes (Received)
    1
    There's no direct sensor for these. They are triggered through the bcm indirectly by the range selector switch, but there's a relay that controls the lamp inbetween. I'd test for good ground, then go on to test the power coming from the relay. If that's good, I'd test the continuity of the power wire and then have fun locating the break. Might just be a bad relay though. Posted the schematic on your other post if you want to check it out. Autozone has all the schematics you'll ever need.
    Reply With Quote  
     

  10. #9 Re: No backup lights 
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    890
    Thanks (Received)
    1
    Likes (Received)
    9
    Dislikes (Received)
    0
    Thanks guys. I will check these things out soon. This winter storm is bad right now. Went from 57 to 22 in a few hours. Went from heavy rain to solid ice and now snow covering it all. Gotta love it.
    Reply With Quote  
     

  11. #10 Re: No backup lights 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    i replied in the first thread, no idea if you ever looked back at it.

    its the trunk harness, where it goes through the body near the hinge. open that up and you'll find a bad wire, theres also a plug in the trunk to unplug the harness, that plug might be boogered up. the lic plate lights work? if not its the harness too.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  12. #11 Re: No backup lights 
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    890
    Thanks (Received)
    1
    Likes (Received)
    9
    Dislikes (Received)
    0
    First thread? Is there two of them? Weird. As soon as I can get into the trunk to look I will check that out. Everything is frozen shut with ice now. Thanks!!
    Reply With Quote  
     

  13. #12 Re: No backup lights 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    No backup lights- 2007 GT aka your first thread.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  14. #13 Re: No backup lights 
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    890
    Thanks (Received)
    1
    Likes (Received)
    9
    Dislikes (Received)
    0
    Lol. I didn’t make 2. A mod might have moved one and didn’t delete the original. I will try to delete the one with the least replies.
    Reply With Quote  
     

  15. #14 Re: No backup lights 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    you made two in the tranny section. either way, that harness is a very common failure point for anything mounted in the trunk thats not working.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  16. Thanks rickisrad thanked for this post
  17. #15 Re: No backup lights 
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    890
    Thanks (Received)
    1
    Likes (Received)
    9
    Dislikes (Received)
    0
    I will definitely check that out.

    It it must have been a glitch. I didn’t purposely make two threads. I’m trying to figure out how to delete one of them. I might have to do it on my PC instead of phone???
    2017 Buick Regal 2.0 Turbo (SOLD 2007 Grand Prix GT. Front and rear PLOGs, 1.8 roller rockers, CAI, HPTuned, 3.4 pulley, TEP transmission, 90# springs, rollmaster single chain, Impala front brakes d/s rotors.) Past (Pontiacs) Grand Prix- 97 GT, 03 GT, 04 GT, 04 Comp G, 78 Trans am, 92 Trans Am.
    Reply With Quote  
     

  18. #16 Re: No backup lights 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    you cant delete em. only mods can. dont matter, get to hunting on that harness lol

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  19. #17 Re: No backup lights- 2007 GT 
    Solving problems BrandonHall10's Avatar
    Join Date
    Mar 2014
    Location
    Tucson
    Posts
    3,182
    Thanks (Received)
    10
    Likes (Received)
    146
    Dislikes (Received)
    3
    Quote Originally Posted by rickisrad View Post
    Mods- I meant to post this in general section. Sorry
    Moved.
    Reply With Quote  
     

  20. #18 Re: No backup lights 
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    890
    Thanks (Received)
    1
    Likes (Received)
    9
    Dislikes (Received)
    0
    Thanks Brandon.

    I went out to trace the wires and and it is too darn cold out. I will have to move some crap out of the garage so I can get the car into some heat.
    2017 Buick Regal 2.0 Turbo (SOLD 2007 Grand Prix GT. Front and rear PLOGs, 1.8 roller rockers, CAI, HPTuned, 3.4 pulley, TEP transmission, 90# springs, rollmaster single chain, Impala front brakes d/s rotors.) Past (Pontiacs) Grand Prix- 97 GT, 03 GT, 04 GT, 04 Comp G, 78 Trans am, 92 Trans Am.
    Reply With Quote  
     

  21. #19 Re: No backup lights 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    on my regal the plug is behind the side cover, follow it inside, unplug it, then pull it out the grommet, open the loom starting where it looks pinched, cause thats where the busted wire will be found.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  22. #20 Re: No backup lights 
    GrandPrix Junkie spazzz's Avatar
    Join Date
    Nov 2012
    Location
    Madison
    Posts
    3,328
    Thanks (Received)
    3
    Likes (Received)
    8
    Dislikes (Received)
    0
    License plate bulbs must not work either.

    I'm no good because I painted my reverse bar black topped with a clear coat.
    Reply With Quote  
     

Page 1 of 2 12 LastLast

Similar Threads

  1. installing backup camera
    By Harbinger207 in forum Audio, Security & Visual Electronics
    Replies: 7
    Last Post: 07-14-2017, 04:19 PM
  2. Backup camera
    By Paul007 in forum General Grand Prix Discussion
    Replies: 8
    Last Post: 05-31-2016, 11:29 AM
  3. LED DRL's as backup lights?
    By TateBongard in forum General Tech Discussion
    Replies: 15
    Last Post: 09-12-2014, 08:57 PM
  4. No backup lights, trunk release and fuel level is always reads full
    By dhallstead in forum General Grand Prix Discussion
    Replies: 7
    Last Post: 09-08-2013, 12:31 AM
  5. electrical help no trunk release, backup lights
    By BIGGRASS in forum General Tech Discussion
    Replies: 6
    Last Post: 08-03-2009, 06:53 PM
Tags for this Thread

View Tag Cloud

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •