Hi, I'm trying to replace the oil pressure sensor on our 2003 1500 Avalanche. One dealer told me the sensor was near the oil pan / drain plug and another told me it was back of the block on top. It doesn't look right at the pan (maybe a temp sensor?) and I can't see the back of the block. Anyone know? It's the 5.3 with 4wd/Z71. IF its at the top, any hints on easing the replacement? Thanks!

For more oil and oil pump details check out the direct links below: ---

How to Replace Oil Pan on car?
http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-oil-pan-on-audi-a4-and.html
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How to Replace an Oil Pan Gasket?
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pan-gasket.html
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HOW TO REPLACE AN OIL PUMP
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pump.html
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HOW TO CHANGE ENGINE OIL AND FILTER
http://schematicsdiagram.blogspot.com/2011/07/how-to-change-engine-oil-and-filter.html
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HOW TO REPLACE AN OIL PRESSURE SWITCH (SENSOR)
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pressure-switch.html
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How to Check Differential Oil Leaks and Replace Oil
http://schematicsdiagram.blogspot.com/2011/07/how-to-check-differential-oil-leaks-and.html
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HOW TO PERFORM A BASIC ENGINE TUNE UP-OIL CHANGE
http://schematicsdiagram.blogspot.com/2011/08/how-to-perform-basic-engine-tune-up-oil.html

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Oil pan Gasket on car?
http://howtobyme.blogspot.com/2011/11/oil-pan-gasket-on-1998-toyota-tercel.html

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Oil pressure for car?

http://schematicsdiagram.blogspot.com/2011/12/oil-pressure-for-2001-gmc-jimmy-v6.html

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How to replace Oil Pan on car?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-oil-pan-on-2008-honda.html

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How to replace Oil Pressure Sensor on car?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-oil-pressure-sensor-on.html

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How to replace Oil Pump on car?

http://howtobyme.blogspot.com/2011/12/how-to-replace-oil-pump-on-2008-honda.html

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Car oil leak?

http://schematicsdiagram.blogspot.com/2011/12/car-oil-leak.html

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Car oil leaks from valve cover gasket?

http://schematicsdiagram.blogspot.com/2011/12/car-oil-leaks-from-valve-cover-gasket.html

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Oil light blinks on dashboard?

http://schematicsdiagram.blogspot.com/2011/12/oil-light-blinks-on-dashboard.html

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Oil pressure issues on car?

http://repairhelpcenter.blogspot.com/2012/01/oil-pressure-issuers-on-toyota-tundra.html

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Oil leaks from air filter on ford?

http://technoanswers.blogspot.com/2012/01/oil-leaks-from-air-filter-on-ford.html

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Wire running from oil pan to alternator?

http://technoanswers.blogspot.in/2012/02/wire-running-from-oil-pan-to-alternator.html

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Why car leaks oil from oil filter?

http://schematicsdiagram.blogspot.in/2012/02/toyota-camry-leaks-oil-from-oil-filter.html

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Why engine is consuming lots of oil?

http://schematicsdiagram.blogspot.in/2012/02/2008-scion-xb-24l-engine-is-consuming.html

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Maint REQD message on car dash?

http://schematicsdiagram.blogspot.in/2012/02/maint-reqd-message-on-2008-lexus-rx350.html

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Remove Sump oil pan?

http://repairhelpcenter.blogspot.in/2012/03/remove-volkswagen-sump-oil-pan.html

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Sump not coming OFF?

http://repairhelpcenter.blogspot.in/2012/03/sump-not-coming-off.html

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How to remove the sump on car? http://repairhelpcenter.blogspot.in/2012/03/how-to-remove-sump-on-vw-beetle.html

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Car oil sump removal diagram?

http://repairhelpcenter.blogspot.in/2012/03/volkswagen-beetle-oil-sump-removal.html

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This will help.

Thanks.

The oil pan is the bottom of the engine, it has a plug in it to drain the oil. Not to be confused with the transmission pan, sometimes they look a like. The drain plug is usually up and out of the way of being hit with a curb and knocked off. Hope this helps.

Ebay has several junkyards that deal in newer wrecked cars and sell for 1/2 of new price. Do a search for your vehicle, if nothing is listed, contact the seller. Watch their ratings! Most are very good but some take forever to ship out.

you may be able to cure the leak with a thicker, softer gasket on the drain plug. Also the drain plugs come in several oversizes. So if the 1st one doesn't work you can try the next size.

http://www.cgenterprises.com/drain_plugs_oversize_repair.htm.

considering the cost of oil pan replacement I would just add a dab of RTV sealant to the drain plug washer next time I had an oil change.

faulty oil level sensor or wiring for oil level sensor, it's fitted at underneath the oil pan near the drain plug it's mounted to the oil pan by three bolt if you going to remove it you must drain engine oil first before remove the sensor, is this information helped you?

The block drain is on the passenger side of the engine, in the center of the block near where the oil pan attatches to the block.

Engine Block Plugs/Sensors

Engine Block Plugs/Sensors
100 - Engine Block
100 - Engine Block
101 - Oil Gallery Plug - Front
110 - O-Ring
111 - Oil Gallery Plug - Rear
112 - Oil Gallery Plug - Side
113 - Washer
114 - Engine Coolant Heater
115 - Washer
116 - Oil Gallery Plug - Side
117 - Washer
130 - Transmission Housing Locating Pin
145 - Washer
146 - Engine Block Coolant Drain Hole Plug
701 - Crankshaft Position (CKP) Sensor
702 - O-Ring
718 - Knock Sensor
718 - Knock Sensor
739 - Bolt
739 - Bolt
750 - CKP Sensor Bolt

Oil pressure sending unit is located behind the intake, reach your hand behind the intake a little to the drivers side and you should feel the sensor

lower manifold where it bolts to the heads....leaks into the lifter galley then down to the pan.

the oil pump pickup could have come off the oil pump, but u could fell it inside the pan through the drain plug, that is possible, but not very likely, try installing an aftermarket high volume oil pump, most are adjustable for either high volume or high press, you want volume.

I have a 2001 tribute I bought new and the oil drain plug stripped. My plug size is m12-175. I replaced it with a m12-175 one size over I bought from care quest for $3.89. Worked great. Hope this helps.