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Gary
Gary, ASE Certified Technician
Category: GMC
Satisfied Customers: 16109
Experience:  GCM master tech over 25 years
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I have 2009 canyon in line 5 started then stopped then would

Customer Question

i have 2009 canyon in line 5 started then stopped then would crank over but would not start hooked up code reader uo109 no communication with fuel pump control module came up. any ideas of where to start looking for problem
Submitted: 1 year ago.
Category: GMC
Expert:  Gary replied 1 year ago.

the fuel pump module is located right here can you find this module under the back of the truck ?

do you have a multi meter on hand ?

Customer: replied 1 year ago.
i have a multi meter on hand what prongs will i need to test
Expert:  Gary replied 1 year ago.

ok greT

unplug it and meter set to DC volts

turn the ignition key ON

black meter lead into the black wire terminal #1 red lead to the pink # ***** see what you have for volts then move the red meter lead to the orange wire terminal # ***** what does that read for volts ?

Expert:  Gary replied 1 year ago.

great *

Customer: replied 1 year ago.
black and pink was 0 and black and orange was 12
Expert:  Gary replied 1 year ago.

can you see if the fuse called ERLS a 15 amp fuse in the under hood fuse box is good ans shows 12 volts at it ?

Customer: replied 1 year ago.
still have 13 volts
Expert:  Gary replied 1 year ago.

ok so the pink wire shows no volts at the fuel pump module but the fuse called ERLS shows 12 volts and is NOT blown ?

Customer: replied 1 year ago.
yup thats right
Expert:  Gary replied 1 year ago.

ok our issue is the wire from that fuse which is the pink wire from that fuse to the module is bad somewhere between the fuse box and module

follow that pink wire starting at the module connector and see if you can find where it is bad if you can not find the wire bad a lot of times it is best to just run a new wire from that fuse to the module

once power is restored at the pink it should operate just fine

also make sure the wiring under the fuse box is not cut or chewed through as best you can

Expert:  Gary replied 1 year ago.

how are you making out ?