3 speed overdrive - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ken Cook · 05-31-2019, 05:24 PM

I just had mine stop going into overdrive. It all started with my alternator going out.

Ya see.....I ran the power for my relay from the headlight. Two reasons. It was close to where I mounted my OD Relay and I had already installed a kit to run the headlights all the time (daytime running lights). Ok 3 reasons. #3 I'm lazy.

Apparently what happened was the bad alternator caused the fuse to blow on the daytime running lights and cut power to both the lights and overdrive relay. Turns out all I need to do was turn on the headlights and it would have got me home with overdrive.

Check for power at the fuse on the relay. If no power, start there.
You can also jump power to the solenoid there at the relay. A heavy click is a good sound.

05-31-2019, 05:24 PM	#16
Ken Cook Registered User Join Date: Apr 2017 Location: Ragley, La. Posts: 137	Re: 3 speed overdrive I just had mine stop going into overdrive. It all started with my alternator going out. Ya see.....I ran the power for my relay from the headlight. Two reasons. It was close to where I mounted my OD Relay and I had already installed a kit to run the headlights all the time (daytime running lights). Ok 3 reasons. #3 I'm lazy. Apparently what happened was the bad alternator caused the fuse to blow on the daytime running lights and cut power to both the lights and overdrive relay. Turns out all I need to do was turn on the headlights and it would have got me home with overdrive. Check for power at the fuse on the relay. If no power, start there. You can also jump power to the solenoid there at the relay. A heavy click is a good sound.



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