oil pressure goes to zero shut truck off and restart oil pressure back up for 1 minute or two this is
happening on both truckh
1 2005 chevy express 3500 truck
2 is a 2007 gmc savanna 3500 this looks like a uhaul truck
The odds of them both loosing an oil pump is unlikely. The actual oil pressure can be checked by a mechanic with a mechanical gauge to verify the problem. Most likely they need a oil pressure sending unit. It is a common problem and is inexpensive to fix.
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