95 obs turn signals, overdrive not working

Addicted4 · Jul 7, 2016

Tested the fuses, checked the flashers, grey/yellow wire from ignition switch and still nothing. I have no power to the turn signal flasher but have power everywhere else?? Thanks been reading and checking as I go

Magnum PD · Jul 7, 2016

Something loose in steering column maybe.

purpleheart350 · Jul 8, 2016

If I remember correctly there should be a aluminum cylinder looking fuse on the back of the fuse panel that powers those. Did you check that one?

Addicted4 · Jul 8, 2016

Checked fuses under the hood, all good. Fuses under the dash are good but no power to the turn signal fuse or the flasher? Checked the flasher and it's good but no power at the terminals. Hazards work and brake lights wipers etc work fine.

Blower motor has no power to the fuse so it doesn't work either, ideas on where to look would be great.

Cruise doesn't work and the overdrive button doesn't work so I assume it's a electrical issue from something. Thanks in advance

Bugman · Jul 8, 2016

The signal stat for the turn signals is on the backside of the fuse box the one on the front that you can see is for the hazards.

Do the hazards work?
Have you checked the fuses under the hood with a meter? #17 and #20
Is there power anywhere on the interior fuse box?

purpleheart350 · Jul 8, 2016

The fuse I am talking about you have to get to by going under the dash and on back of the fuse panel.

purpleheart350 · Jul 8, 2016

It's like the round one but on back.

Bugman · Jul 8, 2016

That's a relay and not a fuse. The one that you can see if for the hazards and the one behind it is for the turn signals.

Bugman · Jul 8, 2016

From all the problems it sounds like you are going to need to find a EVTM manual to do your troubleshooting.

The multi function switch/turn signals, wiper switch will do strange things when it starts to go out.

Addicted4 · Jul 8, 2016

So the one on the back side has power to it not the one on the front if that makes since. Fuse 7 for the turn signals does not, I will check more when I get off work. Where can I get the diagrams you suggested so I can further diagnose this issue.

Any thoughts on the blower or the cruise and Od light

Bugman · Jul 8, 2016

I'm not sure if this link will help or not

You can also go here and put in the information for your truck and search the wiring diagrams to see if you can find anything else that might help.

The actual EVTM's are a manual that you would need to find to purchase. They are starting to get hard to find.

Addicted4 · Jul 9, 2016

So I found the issue was a fuse I checked and over looked it. Also put in a new switch and flasher as well.

As for the overdrive I have not found he issue but it sure does make the shifting act strange

79jasper · Jul 9, 2016

That's because the pcm monitors the tail lights and the center high mount brake light.

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Addicted4 · Jul 9, 2016

What ???

Addicted4 · Jul 10, 2016

So am I needing to check the third brake light

79jasper · Jul 10, 2016

Yeah.

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Bugman · Jul 10, 2016

The third brake light causes some weird problems but I doubt that it is your problem.

I'm betting on the multi-function switch.

Addicted4 · Jul 11, 2016

I fixed the turn signal and blower motor issue. The issue I'm having now is the overdrive switch doesn't work and the trans doesn't shift like it should imo, first gear shifts around 2500rpm under normal pedal acceleration and shifts hard from 1-2 3-Od and when going say 65 and letting off the pedal the torque convertor unlocks instantly and drops to 12-1500 Rpms, also once down in speed coasting you can feel every gear as it down shifts as if you were doing it manually