having a problem with pcm or ecm what ever you know this part by , basicly the computer. funny story i had the shocks changed and the so called profecional left the wiring for the intake air temp. sensor haning on the a/c bracket. anyway they got caught in the fan and shorted somthing out. i ran the codes and it came up code 25 short on the IAT sensor circuit. the sensor is fine but the truck is running realy roughand check engin light is on. so my question for any one up to the chalange is 1.is there an external resistor, relay, breaker befor the pcm 2. is the resistor in the pcm, 3. and finally why the hell is gmc dealer ships full of brain dead idiots. peace!
- posted
18 years ago