20 Most Recent 2003 GMC Sonoma - Page 8 Questions & Answers

parts store can give you a printout of the proceedure..

Check all fuses 1st but most likely a faulty head light switch.

With the ignition key turned on without trying to start the engine you should hear the fuel pump run for a few seconds. That is how its primed to start. Upon starting the oil pressure reaches normal operations & the prime switch will cut off by the signal from the computer. Thus the engine still needs fuel to run so the computer switches on the fuel pump relay to provide the fuel to the engine. The prime switch is intergrated with the oil pressure switch. If you do not hear the fuel pump upon having the key on replace the oil pressure sensor

i know it sounds weird but check if you disconnected and wires that you didnt mean to

well the reason no ones able to help you is that your discription in bad what the truck doing whats it not doing is the starter ingaging or not those details will help im assuming that your truck is just not doing anything

take the negative cable off the batteryfor ten min that will reset your computer in the truck

Ignition system. Most likely coil. Check coil, rotor cap, rotory button (inside cap) plugs and wires. THe cap may have a crack that you can not see, so i would buy a new cap and button just to be sure. The reason is that when its damp outside, the spark tends to jump around inside the cap.

you need a new throttle position sensor or mass air flow sensor.

This sounds like a bad ground. check all the heavy gauge cables attached to the frame. If one is loose, it will arc under a load, but lose its continuity.

Try having the transmission fluid flushed and a new filter installed. This is a maintenance service that should be performed periodicly through out the life of your vehicle.

code 32 is egr problems pintle stuck or vacuum pack, vacuum hose.to clear code unplug battery for 15 sec and then reconnect it start engine and let it warm up ....see service engine light on if on retrieve code again