Did complete tune up and fuel pump new gas tank level sensor sending unit check valve still starts up then shuts off
Check/replace fuel pump/relay
SOURCE: seccurity light staying on car starts and shuts right off gas gauge shows empty
I had the same problem recently. Was quoted $400 - 500 for a fix, but when they got in there it was just a wiring issue. Still cost $220, but that was labor only, took about 3 hours to fix.
SOURCE: my 93 bravada wont start since i replaced sending unit
check for power at the sending unit should have power for 10 sec on i belive the purple wire and the other wire will have power all the time power for 10 sec is what u want for fuel pump power ahd if u have power u should be able to hear fuel pump if you have power and do not hear pump pull sender out and check connection from pump to sender also check fuel connection from pump to sender
SOURCE: Fuel Level Gage Reads Incorrect
sending unit in tank is bad need to drop tank and install new.
SOURCE: 1999 pontiac montana transport fuel problem
can you jumper the relay or find the red wire by the battery that is nit connected it will have a green connector jump it to positive and see if pump comes on
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