2000 Chevy Suburban will not start no fuel at fuel rail, fu

2000 CHEVROLET SUBURBAN
160,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
LORI MCGARRY
  • MEMBER
  • 2 POSTS
changed fuel pump and filter
replaced old style sender unit as per recall
to new style i have checked fuel pump relay
and all fuses are good
May 27, 2008 at 9:43 PM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Check the fuel pressure and comeback with the readings-fuel pump might not be producing fuel pressure that will cause the fuel rail not to have fuel-
May 28, 2008 at 6:56 AM
Avatar
LORI MCGARRY
  • MEMBER
  • 2 POSTS
Good morning
thank you for your help.
yes we checked the fuel press, nothing at the
schrader valve. I now dropped the tank again
and checked voltage at the connectors, pump
and sender unit both have 0 volts. removed the top
half of the fuel/relay box and checked connections
and for signs of coarosion all look good. I did see
next to the fuel pump relay a small recpt marked
Prime. will the aid in trouble shooting. next
I will pull the relay and run batt voltage through
the grey wire and check voltage at the pump
connector so I can rule out a damaged or burned
wire. I have questions re: the security system
is it possible that I am in some type of anti theft mode dissabling the fuel pump.
thank you again for your help.
If you have any idea what I should check next
please reply
thank you Lori
May 31, 2008 at 9:34 AM
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
I will pull the relay and run batt voltage through the grey wire and check voltage at the pump connector so I can rule out a damaged or burned wire. When you did this -did the fuel pump turn On? Could be the ATD device Have you check the ECM B fuse 20amp-see below


https://images.2carpros.com/forum/automotive_pictures/12900_relay_9.jpg

May 31, 2008 at 7:36 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.