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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), GMC Mechanic
Category: GM
Satisfied Customers: 5787
Experience:  GM Grand Master Technician 2007. 14 years experience.
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2008 gmc Sierra 5.3l. Shutdown, after fueling. Will start

Customer Question

2008 gmc Sierra 5.3l . Shutdown, after fueling. Will start and run for 2-3 seconds. Had prior cmp code with an extended crank. After shutdown evap control circuit fault became active. Both codes p0341 and p0443 are active. Truck will only start and die...One issue I have conflict with is no koeo fuel pressure. Have fuel pressure when cranking 60 psi, same fuel pressure when commanding relay or doing in balance. I see counts on both crank and cam sensor. Crank is showing rpm while cranking or when it fires , cam is showing 0 rpm all times.
Submitted: 1 year ago.
Category: GM
Expert:  Gary replied 1 year ago.

if you pull out the cam sensor and leave it plugged in while monitoring the cam rpm if you Pass a flat steel object across the tip of the sensor repeatedly will it increment on the scan tool when you do that ?