2000 Chevy 1500 4.8L has 20 lbs fuel pressure. Pump ? Pressure regulator ? Replaced pump GM recommended & still same problem

Anand Kumar

• 2035 Answers
• Posted on Jul 08, 2008

SOURCE: 1997 S-10 fuel line/fuel pressure regulator

Please this link :

http://www.autozone.com/addVehicleId,2336303/initialAction,repairGuide/shopping/repairGuide.htm?pageId=0900c152800bfe20

SOURCE: 2000 chevy blazer, truck cranks

Does your battery go dead?

SOURCE: 1998 Chevy tahoe Hard to start when cold

Hello, yes the check valve is in the fuel pump assembly. The check valve is leaking and the pump will burn out soon. Unfortunately the aftermarket fuel pumps can be very unreliable. A good portion of problems we see on this site are from people who replace the pump sometimes twice and it still doesn't work.

SOURCE: fuel pressure problem.I replaced the fuel pump on 2001 chevy s-10

Most fuel injected vehicles have a relay that controls the fuel pump so after the ignition switch has been on for about 5 seconds and the engine is not running, the fuel pump automatically shuts off.
I don't know what your original problem was, but I think if the car runs normally, you have probably fixed your problem. If you don't have a manual, you can probably go to the library and take a look at a manual that covers your vehicle.

SOURCE: 1998 Chevy tahoe Hard to start when cold

replace your MAP sensor(manifold absolute pressure) the map sensor is the computer for your fuel pressure regulator telling how much pressure. Unless your tahoe runs like **** going up hill than it inevitably your fuel pump