Fuel pressure spec

Does anyone know what the fuel pressure range should be for a 1999 5.3L?
Thanks- Rick

379-427 kPa (55-62 psi)

Thank you.

Well looks like it is the pump- pressure bouncing between 49 and 53 and now the pump is whining. I understand there are 2 models of the fuel pump that were used. Something about a pump code "TCU" or "TCF". Is there a way to identify which pump is on mine before I pull it out of the tank? I'd like to purchase it before I tear it down.
Thanks- Rick

Is the difference because of flex fuel or tank size ? Rob

Bumping old thread as it appears no one ever answered the question. TCF= vehicle equipped with evaporative emissions, two electrical connectors at fuel tank module, one connects to the BLACK pressure sensor mounted to tank module. TCU= no evaporative emissions, single electrical connector, no pressure sensor.

Bumping old thread as it appears no one ever answered the question. TCF= vehicle equipped with evaporative emissions, two electrical connectors at fuel tank module, one connects to the BLACK pressure sensor mounted to tank module. TCU= no evaporative emissions, single electrical connector, no pressure sensor.

I am quite sure this has been figured out since it has been 6 yrs past now that this was asked.

before buying these type parts best use the vehicles vin number to be sure the correct electrical parts are used. this would also cause the updated electrical parts are correct for the vehicle. these pumps have been redesigned since build date on most models.

in the USA most regions if not all require this vapor emission recovery system,....

I spent over half a day looking for what the differences in the two units were, thinking that someone on this forum would be kind enough to mention that after changing their fuel pump. While changing one I was faced with a unit that had no T-Code. Yes, Five post on this forum speak of codes TCF and TCU but neither of them explain the actual differences. For your convenience I shall list them: This one you are reading, http://www.automotiveforums.com/vbulletin/showthread.php?t=760322&highlight=tcf+tcu, http://www.automotiveforums.com/vbulletin/showthread.php?t=658993&highlight=tcf+tcu, http://www.automotiveforums.com/vbulletin/showthread.php?t=579939&highlight=tcf+tcu, http://www.automotiveforums.com/vbulletin/showthread.php?t=356147&highlight=tcf+tcu Neither of the a fore mentioned posts make any mention of the differences in the units. Only what the different units are used for. There are many of these trucks still on the road, many will be needing fuel pumps and parts stores are still asking the dumb TCF or TCU question instead of asking does it have a pressure sensor in the module and one or two wiring connectors. So I posted this here so future Chevy truck owners would get their question answered.

to get the correct fuel parts for your vehicle you must use the vin #.

there are too many changes. even some part stores will mess this up.

the dealership will give you the correct part number . then you can use that number for part cross reference.

regulator and pumps are what is the issue .

Being a shop owner and subscriber to Autozone Pro and M.O.R.E. OEM, I'm well aware of the value of the VIN#. However, even entering the VIN# both sites ask for the 'code'. I'm just trying to help you DIYers out as there are still many of these vehicles on the road today, many still on the original pump. Parts houses are still asking the same dumb question. Asking if the vehicle has evaporative emissions makes more sense than asking for a code that one must remove the fuel pump to access. Evaporative Emissions can be determined from the Vehicle Emissions Control Information label affixed somewhere in the vehicles engine compartment.

Being a shop owner and subscriber to Autozone Pro and M.O.R.E. OEM, I'm well aware of the value of the VIN#. However, even entering the VIN# both sites ask for the 'code'. I'm just trying to help you DIYers out as there are still many of these vehicles on the road today, many still on the original pump. Parts houses are still asking the same dumb question. Asking if the vehicle has evaporative emissions makes more sense than asking for a code that one must remove the fuel pump to access. Evaporative Emissions can be determined from the Vehicle Emissions Control Information label affixed somewhere in the vehicles engine compartment.

being from OK do you have any emission laws in that state ?