Having problems with your 2002 GMC Sierra ?
02 gmc 4.8 code po336 i replaced the sensor but still won;t start
Try replacing the oil pressure switch on the back of the block. If IT DOES NOT DETECT OIL PRESSURE IT WILL NOT RUN Kills the fuel pump.
Ihave the same issue on a 96 lumina. replaced both crank sensors, runs for a couple of minutes, then dies. Now I find there is no power going to the 24x sensor. which traces back to the pcm. we need to boycot all this electronic, computer controled **** and go back to carbs and points.
Repair Help & Product Troubleshooting for 2002 GMC Sierra
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