Fuel Rail Pressure Sensor wiring

White Duramax · Sep 12, 2016

Does anyone know what pin numbers at ecm for the rail pressure sensor? Only thing I'm finding shows #42 on C2 as the signal wire. Thanks

clrussell · Sep 12, 2016

Lly I'm assuming

C1 pin 33 is 5v reference
C2 42 is sensor signal
C2 2 is ground

clrussell · Sep 12, 2016

Picture

c20elephant · Sep 12, 2016

Here you go for the LLY, GMUPFITTERS.com I cannot access the 2001-2003 LB7 files maybe you'll have better luck.

https://www.gmupfitter.com/pdflists/view/6

Electrical PDF for 2003+

https://www.gmupfitter.com/files/media/photo/99/2006_LD_CKFullSizeElectrical.pdf

White Duramax · Sep 12, 2016

Thanks for the help. Wiring is testing fine. Anyone know what resistance the sensor should have?

clrussell · Sep 12, 2016

White Duramax said:
Thanks for the help. Wiring is testing fine. Anyone know what resistance the sensor should have?

I can try to measure one tomorrow..

What's your issue

White Duramax · Sep 12, 2016

Throwing p0192 voltage low with koeo. Unplug sensor and code changes to p0193 voltage high.

White Duramax · Sep 14, 2016

New rail pressure sensor fixed it.