speedometer help/advice

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Huckleberry

Member
Joined
Jul 27, 2023
Posts
34
Reaction score
28
Location
Valley Bend WV
First Name
Donnie
Truck Year
1978
Truck Model
K15
Engine Size
350ci
Hello, my friends, need some advice again....lol. 1978 GMC K15 4wd Turbo 350 trans.

Speedometer started jumping, then would peg clear over to 100 mph side, now does not work at all. Odometer works just fine. need your advice on a fix. I have ordered a new speedo cable from LMC. Hoping there may be a better fix then taking out the whole dash etc. as always, appreciate any and all help.

D
 

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
5,446
Reaction score
8,679
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
Hello, my friends, need some advice again....lol. 1978 GMC K15 4wd Turbo 350 trans.

Speedometer started jumping, then would peg clear over to 100 mph side, now does not work at all. Odometer works just fine. need your advice on a fix. I have ordered a new speedo cable from LMC. Hoping there may be a better fix then taking out the whole dash etc. as always, appreciate any and all help.

D
If the odometer works,than the cable and speedometer drive are working. You need the speedometer itself repaired or replaced
 

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