Voltmeter Bounce

[Armalite15]

So 1996 K1500 with 171,000 miles, struck a deer on the way to work late last year. Every since when the turn signal is on the voltmeter pulses with the turn signal flasher. They replaced the grill, one headlamp assembly and turn signal assemblies as well. I've done some looking around but no serious testing yet, I'm guessing its a bad / loose ground that is likely causing this?

 

[SUBURBAN5]

I would guess ground or even possibly the cluster itself.. not the same issue but I use to notice my green turn signal would dim every now and then when the opposite single was on. More noticable with the hazards. When I had my accident I made sure all my grounds were clean in the front any wires I tapped into were soldered and no Nick's in the jackets. When I connected everything never did it again.. works good now. Btw one easy ground that looses connection is the ground next to the washer fluid. I would double check everything especially if your front got smashed

 

[1997]

wasn't in an accident, but when volt meter did as you describe on my 95, cause was the alternator flaming out.
Rebuilt the alternator, good to go.

 

[Armalite15]

Thanks for the replies, I'll test the alternator and start checking those grounds, hope it's not the cluster.

 

[Armalite15]

Tested battery says good but needs charging so I thought maybe it was going to be the alternator. Next checked the starter which passed, lastly the alternator which showed good diodes, good output no problems. Curious about the battery saying needs charging, guess I'll start checking the grounds. If I knew it would cure that gauge issue I'd change the alternator anyway.

 

[TheAutumnWind]

my voltmeter bounces with blinkers. Always has. New ad244 alt, and new battery. big 3 so main grounds are good. I think its in the cluster.

 

[CKVortec]

my voltmeter bounces with blinkers. Always has. New ad244 alt, and new battery. big 3 so main grounds are good. I think its in the cluster.

Every Chevy C/K truck I have ever driven has had this issue. When you turn on the turn signals the volt meter bounces in time with them right?

 

[Armalite15]

Every Chevy C/K truck I have ever driven has had this issue. When you turn on the turn signals the volt meter bounces in time with them right?

Yes it does, however it didn't do it before I hit the deer.

 

[east302]

Not glad that you’re having the problem, but I’m glad I’m not the only one. In my case, swapping with a known good cluster didn’t change it.

Dumb thing still looks like a metronome with the signals on. Fingers crossed that you figure it out.

 

[PlayingWithTBI]

Dumb thing still looks like a metronome with the signals on.

Ahhh a musical background? Years ago I assembled an electronic one for a buddy of mine from Heathkit. We still have a "normal" one here with a Yamaha piano no one plays, LMAO.