40 PSI - I’d recommend changing the fuel filter, located on the passenger side frame rail about even with the back seat - bleed pressure first if you can and please report back the pressure you measure.
PNs:
Wix - 33310
Puralator - F67221
AC/Delco - GF-516

Having just replaced my fuel pump, I highly recommend draining the fuel tank a bit every 15K miles or so - just remove the 12mm bolt visible through the tank skid guard and let a cup or so of fuel run out - I had a bit of gunk in mine that may have contributed to the pump’s failure.