1990 gmc sierra cluster swap
 

what years can i swap with?

Directly, because yours has gone bad? 1988-1990 only. And they're basically the same cluster although there are some really basic idiot-light style ones in some of those trucks, too. If you change between idiot light/gauge style you gotta change the senders too.

If you want to swap because you want needle gauges and a tach, well, it gets trickier. SOME, not all, 1991 models had needle gauges w/tach. If you can find this cluster you can swap it into your 90 but you have to move 3 wires around in the harness connector, no biggie, the hard part is finding the cluster.

Also any 1988-1991 cluster you swap in will likely need the speedometer recalibrated unless you get it from a donor truck that came originally with the same tire size and axle ratio as yours. Also fairly easy to do, I did a pic write-up linked in the FAQ post over on Chevytalk 88-98 truck section.

Much easier to find needle/tach cluster from a 1992-1994 but much more work to swap in. Bunch of wiring work, and addition of the DRAC module, which also needs recalibrating. There's a write-up on this swap that was on FullsizeChevy but I think that forum is gone, it's probably been duplicated elsewhere though...like on my site: http://www.someotherplace.com/info/c...p/cluster.html <-- please note I did not write this information and do not take credit for it or guarantee its accuracy, it's just an archived copy of someone else's post.

Richard