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06-03-2023, 08:53 PM
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#1 |
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Registered User
Join Date: Jun 2017
Location: Painesville, OH
Posts: 181
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1968 GMC Reverse Lights not Working
Hi All...
I have a ’68 GMC stepside with a 3-speed on the column. Both reverse lights have stopped working. What is the best sequence of steps to diagnose the issue? Thanks! |
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06-04-2023, 12:18 AM
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#2 |
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Senior Member
 
Join Date: Dec 1999
Location: Spring Valley, Ca.
Posts: 1,136
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Re: 1968 GMC Reverse Lights not Working
Check the switch on the lower end of the steering column inside the cab. If the house and bulbs are good. You can Google it also to find articles on it. Or go to the FAQ section.
__________________
Smitty '71 Short Fleetside Spring Valley, Ca. |
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06-04-2023, 03:56 AM
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#3 | |
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Registered User
Join Date: Jun 2017
Location: Painesville, OH
Posts: 181
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Re: 1968 GMC Reverse Lights not Working
Quote:
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06-04-2023, 09:28 AM
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#4 |
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Senior Member
Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,885
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Re: 1968 GMC Reverse Lights not Working
Also check the fuse, it is labeled B/U LPS.
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06-04-2023, 09:53 AM
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#5 | |
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Registered User
Join Date: Jun 2017
Location: Painesville, OH
Posts: 181
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Re: 1968 GMC Reverse Lights not Working
Quote:
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06-04-2023, 02:37 PM
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#6 |
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Registered User
Join Date: Apr 2022
Location: Moorpark, CA
Posts: 775
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Re: 1968 GMC Reverse Lights not Working
if the BU light switch is at base of steering column for 3 OTT, what is the switch on the upper, DS, of trans, Saginaw, for? Mine is a 72. I assumed it is the BU light switch
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06-04-2023, 08:01 PM
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#7 |
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Senior Member
Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,513
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Re: 1968 GMC Reverse Lights not Working
On my 4-speed SM465, the B/U Switch is on the transmission. 3-speeds may be different.
__________________
Every 25 years I like to rebuild that 292, whether it needs it or not. |
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06-13-2023, 08:10 PM
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#8 |
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Registered User
Join Date: Jun 2017
Location: Painesville, OH
Posts: 181
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Re: 1968 GMC Reverse Lights not Working
Simple fix. Fuse was blown. Contacts were rusty so I cleaned them up with Dremel wire wheel.
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