help tach his stuck on 1500

[77k10]

http://www.fullsizechevy.com/forum/g...-1500-rpm.html

i got no answers there, so im asking here. its a 77 k10.

[cmarentes]

Is it a aftermarket tach?...if so what type?

[77k10]

Nope its stock!!!

[cmarentes]

Sounds like it might be broken, i would try to replace it.

[Prong]

Assuming your wiring didn't come undone, it's most likely something internal. I've had 2 factory tachs rebuilt for my trucks at a cost of about $115/ea. I had mine done at Deluxe Speedometer in Denver (they're on the web). Another option I've heard of is "The Tach Man". I believe he's also online.