Question about 2003 Pontiac Bonneville

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Looking for the location of the Oil Sending Unit on a 2003 Pontiac Bonneville.

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  • Rick Byrd
    Rick Byrd May 11, 2010

    and which engine would this be ?

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Between engine and trans near oil filter

Posted on Feb 19, 2009

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SOURCE: Pontiac Bonneville(2000) oil pressure sending unit

The oil pressure sending unit is located behind the oil filter, Threaded into an aluminunm housing. It has wiring that plugs into the sending unit. The oil filter has to be removed and you will need a deep well socket and a 6 inch extension. Change the oil and the sending unit together.

Posted on Feb 02, 2009

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2 Answers

Where is sending unit for 2001 bonneville


Its mounted on the oil filter adapter just above the oil filter.

Feb 03, 2012 | 2001 Pontiac Bonneville

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Is it easy to change out a oil sending unit on a 2003 bonneville


Yes, very easy, Just unscrew the old one and screw the new one in.

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Oil pressure guage dropped to 5 after an oil change in my pontiac bonneville gxp 2005


Did it stay there? If so, put a pressure gauge on the engine, to check the actual pressure and then you will be able to tell if it is just the sending unit/pressure sw , that is off.

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Where is the oil pressure sending unit located on 3800 engine and how to replace?


Take the passenger front wheel off. Look up under the car by the power steering pump, you'll see the sending unit, it's up and back from where the oil filter is. There is a special GM oil sending unit socket, I'm sure you will be able to buy or barrow one from your local parts store! Make sure to have a catch pan under it when you take it out, they can leak a good amount of oil out when you remove it.

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Pontiac Bonneville 2003 oil pressure reads 120


have this checked with a mechanical gauge, also check that the wies going to the oil sending unit to make sure the're not shorted or grounded

Jul 24, 2009 | 2000 Pontiac Bonneville

1 Answer

My 01 bonneville oil pressure gauge is showing 120 and my gas gauge is all over the place


HI, the oil pressure sending unit may be malfunctioning at this point. this will cause erratic readings. if your oil level is proper and there are no apparent oil leaks, you will need to replace the oil pressure sending unit. this will fix the erratic oil pressure readings.

Concerning the gas gauge. this device also has a sending unit that sends the correct fuel level reading to the gas gauge via wire transfer. this sending unit is located and attached to the fuel pump assembly inside the gas tank. replacing this device will fix this issue as well.

Please rate and god bless:)

Apr 28, 2009 | 2001 Pontiac Bonneville

2 Answers

Pontiac Bonneville(2000) oil pressure sending unit


The oil pressure sending unit is located behind the oil filter, Threaded into an aluminunm housing. It has wiring that plugs into the sending unit. The oil filter has to be removed and you will need a deep well socket and a 6 inch extension. Change the oil and the sending unit together.

Jan 24, 2009 | 2000 Pontiac Bonneville

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