Fix for Backup Lights not Working (Page 1/1)
rebeck02 SEP 22, 09:51 PM
Anyone have suggestions on how to determine why my backup lights on 88 GT, V6, 5-Speed are not working? Thank you. reb (Roger)

[This message has been edited by rebeck02 (edited 09-22-2023).]

Vintage-Nut SEP 22, 11:12 PM
Okay, I'll bite - did you check the bulbs?

My next guess is the reverse light switch.....

GM 10075403 Switch Assembly or ACDelco D2219A (But No Longer Available and Discontinued since 2006 without any cross reference or interchange)


Edit to Add

A Fiero GT Backup Light Switch Replacement Video
https://www.youtube.com/watch?v=qjk_f7c91Y8

But 'The Fiero Store' part number in the video (51420) has been changed to 4sp Manual Trans Back Up Light Switch (NOT 5-speed)

Your BEST "Plug 'n' Play" OPTION is in this thread:

Reverse light switch for 5 speed by Mar21457
https://www.fiero.nl/forum/Forum2/HTML/138430.html

Which is:

Red Devil River, LLC.
Fiero 5 Speed Reverse Back Up Switch ($48)
https://reddevilriver.com/h...verse-back-up-switch

And also, on eBay (search 10075403)

------------------
Original Owner of a Silver '88 GT
Under 'Production Refurbishment' @ 136k Miles

[This message has been edited by Vintage-Nut (edited 09-23-2023).]

rebeck02 SEP 23, 03:04 PM
Hi Vintage-Nut, That's always a great first question to ask. Computer, television, back-up light bulbs, anything that needs power. Is it plugged in? In this case, the bulbs work, so I really appreciate all the threads and the lead to the part on ebay. That will be a big help. Thank you! reb