1994 GMC K1500 Speedometer Problems - Help??

[jus10inbrla]

Also remeber u wil have to swap trip / odometer

 

[jus10inbrla]

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[someotherguy]

Umm.. This is the first thread I've made on this problem.

Anyway, most of the ones in my local junkyard are newer. 96, 97, 98. What years will work in my 94? Even if I don't get one from this jumkyard, knowing the year span fitment will help searching E-bay, etc.

Thanks!
Vettepilot

Really?

Recalibrating 1988-1991 speedometer / dash cluster

(I couldn't find a search result here for this post so I'm copying it over from my old Chevytalk write-up from 2011 - I'll have to break the post into two parts to include all the pictures. Sorry for the super-long book style writing.. I'm trying to give a good understanding of the mod before...

www.gmt400.com

OK..

Richard

 

[Vettepilot]

Ok, thanks. That's a bummer, as there's several 96. 97 speedos in my junkyard here, but no 92-94's.

They look the same. Do you know what is different? How does the switch from OBD1 to OBD2 affect the speedo?

Vettepilot

 

[jus10inbrla]

They look no where near the same. Take a good look. The 95-98 lense / frame is round, and deeper on bottom than at top.



the 92-94 is square, and deeper at top than bottom.

the plugs on 92/94 is a square, 95-98 is more oblong

92/94 has a removable prndl indicator set by a cable attached to colum. 95 up is made electronicaly into the cluster.


if u wanted a 95 up speedo. it csn be done. But u gota replace whole dash and do some wire splicing . Im in the process now of doing that minus the speedo cluster

 

[Vettepilot]

I'm sorry, I'm still confused. Here's why.

The clear face of my cluster was damaged and hard to see through. At this "U-pull it" junkyard, I found a pickup that had the "same" cluster, so I removed the lens, bought it, and installed it on my truck. It fit perfectly. Later, I went back to buy the whole cluster, but when I looked and found the truck is a 1996, decided not to buy it, being worried about year compatibility. There are at two or three other trucks in that yard that have identical clusters, but they are all newer than 1994 so I do not know if they will work.

See the reason for my confusion??

Thanks for helping!
Vettepilot

 

[jus10inbrla]

Ok about tosolve this quick..

 

[jus10inbrla]

Do youu have this style speedo (92-94) with this style dash

 

[jus10inbrla]

Or this style speedo (95-98)with style dash

 

[jus10inbrla]

Neiher will fit in the others hole; nor will the wiring connector mate up. I’m starting to think u have a later year truck than u think