Mechanic 1995 Silverado Z71

[beep_gun]

Looking for a good mechanic in the 95136 area of San Jose. Truck needs a look at engine temp. gauge is at 210 then spikes to 235 and goes back to normal in a minute or two, cycles through this at normal driving.

[Nor_Cal_Grown]

Is this the factory gauge, or after market?
-J