Where is the IAT sensor locatedRelated Questions2006 chevy silverado 1500all dash lights battery abs etc. stays on, gauges are on 0. it has new battery and I have checked for a lose connection?2004 chevy silverado 1500when headlamps on, brake lamps come on. when brake applied, taillamps come on. replaced brake switch at pedal, no change. removed trailer light pigtail at bumper, no change. Please help. This is my daily driver.1990 Chevy silverado 1500My son is driving my truck,he says the oil pressure gauge is going up and down and now the truck has died.He said before that the pressure was all the way up,what could cause the vehicle to die?