Suburban gauge question ??????

[nickbwilson]

Hey guys Im running a 90 suburban gauge cluster in my c10 ls swap got all my gauges working properly but my temp gauge i have read where you can use a 98 trans am 3 pin coolant sensor to get the temp gauge to read anyone else done this to get your gauge to work??

[terrylgreenjr]

I used the temp sensor that was a match for the cluster and turned the threads down to match the LS head

[nickbwilson]

any idea what the threads need to be ??????

[terrylgreenjr]

When I did my swap I used the LS sensor on teh drivers side head for the ECM input and removed the plug on the passenger side head to install the sensor for the cluster. When I had the plug out I just matched the threads I cant remember the size. I know it is smaller then the 91-90 factory sensor for sure

[nickbwilson]

I just installed the gauge sender for the 90 suburban cluster on my engine its a one wire hook up I guess chevy decided to put two coolant sensors on one for the ecm and one for the gauge Im a little worried the sensor I got is to long anybody else ran into this problem running the 90 suburban gauge cluster the proper thread pitch for anyone looking is 12mmx1.5 this is the sensor i got