Gauge Cluster Problem

[Edson]

I have a 1999 silverado 5.3, and i switch my gauge cluster to a 2002 escalade ext but the trans temp doesn’t seem to work. 

[carkhz316]

I think Coby7 will have a better idea than me, but on the '03-07 clusters, you have to enable trans temp output in the ECM to the cluster via a Tech2 or equivalent; (visit to the dealer or or independent shop with good scan tool)

[US Dashworks]

you have to get the trans hot, that gauge does not move much. drive it around for an hour.

[SouthPawCO]

I swapped the cluster in my '03 Tahoe for one out of a Duramax with a trans temp gauge. No additional programming was needed but with a trans cooler out front, it takes awhile for it to start getting warm. I think the hottest I have ever seen it was around 150*-175* and that was on a 3.5 hour drive up the mountains. Usually it stays around 100*-125*.