Noise from behind my instrument cluster - Perhaps the speedo?

[sw99]

On my 1986 K30

Cant find any info on this. I have a sporadic noise that comes and goes. It sound like somethings spinning behind the instrument cluster. Could this be a loose speedometer cable or any other ideas?

 

[dremu]

On my 1986 K30

Cant find any info on this. I have a sporadic noise that comes and goes. It sound like somethings spinning behind the instrument cluster. Could this be a loose speedometer cable or any other ideas?

Yeah, the cable is famous for kinking up and making noise, or might just be loose.

Were it me, I'd disconnect the cable (which involves much twisting and swearing), lube the square drive end of it with some white lithium grease, as far into the sleeve as you can get it, then put it back together.

Donno about the newer trucks like yours, but my '74's just snap into place. I seem to recall being able to access them from underneath without removing the cluster, but it might mean removing the black plastic heater/vent ducting, if so equipped.

-- A

 

[Subember]

My '85 burb does the same thing once in a while. I'm not really familiar with what's behind the cluster but I would bet a double bastard it's the speedo cable too.

 

[British Slave]

Pull the cluster, pull the cable out and grease it with a high quality speedo cable grease. Just get a handful of grease and start with the trans end and feed it thru the grease back into the cable housing. Please don't use white grease. It drys out and gets hard and won't do the cable any good. When you put it back in, just be sure to turn the cable and push by hand to engage the cable at the trans.

 

[sw99]

Awesome, thanks a bunch folks. I'll dig into this when it warms up here.