Problems with Thermostat in a 1997 Sonoma GMC V6

Hi, does any one had a problem with the thermostat not making contact in the base? I aleready bougth a new thermostat but it is even worst, this is causing the temperature do'nt raise, I first thougth that there were no thermostat, I verified and the thermostatwas there but it is not making contact in the base so I bought a new one but it is worst, if anyone knows something about this I will apreciate any information. Thanks and regards.

Try OEM.

checa que este limpio o libre de silicon. o materiales del anterior termostato, si no encuentras las juntas originales aplica silicon suerte amigo. swaludos de queretaro mexico.