2001 Chevy Silverado no oil pressure.

Tiny
91GTA
  • MEMBER
  • 2001 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 300,000 MILES
My dad owns a 2001 Chevy 3/4 ton with the 6L v8; it is a work truck. Just recently my dad tried to start it and he noticed that the trucks oil pressure gauge was at zero he immediatly shut the truck off. Now the truck at the time was running smoothly and when the oil pressure gauge stayed at zero the engine didnt make any funny noises and ran perfectly normal for the few seconds the engine was running.

So would it be the oil pump? Or a faulty gauge?
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Thursday, October 30th, 2008 AT 11:04 PM

2 Replies

Tiny
IMPALASS
  • EXPERT
Hello -

Based off the information given you have a bad oil sensor.

The IPC uses the engine oil sensor signal to determine the engine oil pressure. The oil pressure sensor signal circuit is hard-wired to the IPC. The engine oil pressure sensor signal to the IPC is a variable resistance ranging from 0-90 Ohms . A sensor resistance of 1 Ohms will display as 0 psi (0 kPa) and a resistance of 88 Ohms will display as 80 psi (550 kPa) . The Check Engine Oil Pressure indicator will be displayed in the message center if the IPC detects a low engine oil pressure.


http://www.2carpros.com/forum/automotive_pictures/248015_Oil_Sensor_1.jpg



Tools Required: J 41712 Oil Pressure Sensor Socket

Remove the engine sight shield. IMPORTANT: Clean the area around the sensor before removal. Do not allow debris to enter the engine.
Disconnect the oil pressure sensor electrical connector.
Remove the oil pressure sensor using the J 41712 or equivalent.

INSTALLATION PROCEDURE
Apply sealant GM P/N 12346004 or equivalent to the threads of the oil pressure sensor. NOTE: Refer to Fastener Notice in Service Precautions.
Use the J 41712 or equivalent in order to install the oil pressure sensor. Tighten Tighten the oil pressure sensor to 20 N.m (15 lb ft) .
Connect the oil pressure sensor electrical connector.
Install the engine sight shield.
Check and adjust engine oil level.
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Thursday, October 30th, 2008 AT 11:59 PM
Tiny
91GTA
  • MEMBER
Wow thanks for the info! This has got to be the most helpful site on the net!

Ps thanks again!
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Friday, October 31st, 2008 AT 4:40 PM

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