Is the temp gauge the only reason you're looking for this sensor? Because if it is, you may be barking up the wrong tree. The sensor on the thermostat usually goes to the computer only, for engine management. The sending unit for the temp gauge is probably going to be screwed directly into either the block or the end of the head. (This is how GM does it most of the time, anyway)
Did what he was designed to do.
Stitch II was born 1/10/07
AWARD WINNER 2008
- Nine days, 4000 miles, two people, one car.