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1957 GMC wiring diagram
#1481684 01/04/2023 5:21 AM
Joined: Apr 2022
Posts: 62
Alberta
5
53farmtruck
Offline
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53farmtruck
'Bolter
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Joined: Apr 2022
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Alberta
I tried the search function and looked through the first 8 pages of results with no success. Could anyone point me towards a wiring diagram for a 57 GMC 1/2T? I’m sure Chevrolet would be pretty much identical

Thanks in advance

Paul
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Re: 1957 GMC wiring diagram
53farmtruck #1481688 01/04/2023 9:30 AM
Joined: Jun 2021
Posts: 157
Augsburg Germany
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Stovebold6 Offline
'Bolter
Stovebold6
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Augsburg Germany
Hope this helps
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image_2023-01-03_015645306.png (796.79 KB, 82 downloads)
Re: 1957 GMC wiring diagram
53farmtruck #1481694 01/04/2023 12:22 PM
Joined: Jun 2011
Posts: 5,096
Longmont, CO
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EdPruss Offline
Crusing in the Passing Lane
EdPruss
Crusing in the Passing Lane
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Posts: 5,096
Longmont, CO
Jegs has them, color on chart matches wire color.

Ed

'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: 1957 GMC wiring diagram
53farmtruck #1481702 01/04/2023 3:02 PM
Joined: Jan 2022
Posts: 2,475
Morris Ranch Texas
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Bill Hanlon Offline
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Bill Hanlon
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Morris Ranch Texas
From the 57 GMC shop manual as posted in the Old Car Manuals Project: Click here

'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
Re: 1957 GMC wiring diagram
53farmtruck #1481845 01/05/2023 3:15 PM
Joined: Apr 2022
Posts: 62
Alberta
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53farmtruck
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53farmtruck
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Alberta
Thanks guys

I think with a combination of both diagrams I should be able to get it across the line!!

Moderated by  Jon G, Rusty Rod 

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