Duramax P2033, P2032 Diagnostics and Repair. (Resistance specs and voltage specs in description)

This is a “how to” on diagnosing and repairing a P2033 and a P2032 EGT SENSOR 2 circuit codes. I will show you where the sensor is located, how to ohm it out and check the wiring on the truck for proper voltage. This procedure can be use for all EGT sensors on the truck. Wire colours may be different but they will all have 5V on one wire and GROUND on another. RESISTANCE SPEC IS 220 OHMS When checking wiring on truck side Set multimeter to ohms setting and go from one pin to battery negative, of reading is high go to other pin and the reading should drop. The lowest resistance number should be GROUND Then set your multimeter to VOLTS DC and test from pin on connector that is not ground to battery negative It should have close to 5 volts on the wire.