HELP - Only Starts with Camshaft Sensor Disconnected

[Geotrash]

See the link below and scroll down to the second diagram (Engine Data Sensors - 5-volt and Low Reference). Dead center is the Camshaft Position sensor and it shows the wire colors for the 5v Ref #1 (D-BU) and the ground (BN). That 5V Ref is shared by a few sensors on the left side of the diagram, but from different ECM pins.

Electrical Diagrams — 2007 Chevrolet Suburban 4WD V8-5.3L Service Manual | Operation CHARM

Detailed repair manual for the 2007 Chevrolet Suburban 4WD V8-5.3L.

charm.li

Thank you, Steve. You saved me from digging.

 

[evanw0920]

See the link below and scroll down to the second diagram (Engine Data Sensors - 5-volt and Low Reference). Dead center is the Camshaft Position sensor and it shows the wire colors for the 5v Ref #1 (D-BU) and the ground (BN). That 5V Ref is shared by a few sensors on the left side of the diagram, but from different ECM pins.

Electrical Diagrams — 2007 Chevrolet Suburban 4WD V8-5.3L Service Manual | Operation CHARM

Detailed repair manual for the 2007 Chevrolet Suburban 4WD V8-5.3L.

charm.li

Thanks, will try this out and get back to y'all.

 

[Fless]

Thanks, will try this out and get back to y'all.

I hope it helps. Seems like a short or lost ground on a circuit like that would set some kind of code.

 

[evanw0920]

I hope it helps. Seems like a short or lost ground on a circuit like that would set some kind of code.

Hey guys, finally got the new sensors in to no avail. I did test the wires and there was 5v. Still just cranks but doesn't start unless I unplug the sensor. Still no codes either.

Is the only other possibility an issue with the ECU?

I did check the timing chain and it hasn't jumped timing.