Question about 2000 Pontiac Montana

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Draining the Engine Block of Coolant.

3.4L V6 engine in a Pontiac Montana. I want to drain the coolant from the engine block. I could use help locating the drain plugs, please.

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  • Joseph Poniatowski
    Joseph Poniatowski Mar 01, 2009

    I have already drained the radiator. I want to drain the engine block of coolant directly from the drain plugs on the engine.

  • Joseph Poniatowski
    Joseph Poniatowski Apr 01, 2009

    The other plug is on the back but was only accessable with the van raised on jackstands. Basically I found it while disconnection the rear exhaust manifold. While looking up from underneath towards the rear of the engine shine a flashlight up there and you'll see it. I had to use a long extension on my ratchet.


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The drain plug is under the front of the truck on the drivers side back of the radiator. you have to turn it to open it .

Posted on Mar 01, 2009

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One of the block plug is on the front between the oil filter and starter. the other one, i'm looking for it too!

Posted on Mar 31, 2009

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My 2001 Pontiac Montana is leaking coolant. It's dripping down between the oil drain plug and the transaxle fluid pan. I can't see where exactly it is coming from. I've checked the water pump, radiato

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Jan 06, 2012 | 2002 Pontiac Montana

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I can't find where the spark plugs are located?? where are they located at?? please help :(

The spark plugs are mounted in the heads, which are bolted to the top of the engine block.

The Montana has a transverse (sideways) mounted engine, so 3 of the 6 plugs will be toward the radiator, and the other 3 will toward the firewall.

There is a procedure for getting to the rear 3 plugs that requires unbolting the "dogbone" mounts, and rotating the block toward the front of the vehicle to give better access to the rear plugs.

I'd suggest you go to your local auto parts store and purchase a vehicle specific repair manual (Haynes #38036) (Section1-20) which contains detailed instructions on how to accomplish this task.

It's not all that difficult, but be patient!

Above all else, good luck!

Mar 24, 2011 | 2001 Pontiac Montana

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Were is the drain plug located on a 2007 chevy 5.3 on the passenger side of engine . is it behind the ac unit. i want to put a engine block heater in.

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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

Oct 19, 2010 | Chevrolet Silverado 1500 Cars & Trucks

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2002 pontiac montana with an occational starting problem

Go to Autozone and they will check your cars trouble codes for free and tell you what part you will need to replace. They are usually right 99% of the time.The crankshaft position sensor located behind the harmonic balancer maybe be bad. There is another crankshaft position sensor located on the engine block above and to the right of the oil filter. Or it could be the power train control module located to the right of the air cleaner box. This information is for the V6 3.4 engine. Buy the repair manual for your Montana and go to the engine performance section. The manual costs about $26.00

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Where is the drain plug for the radiator

Should be a drain **** at the bottom of the radiator that unscrews out. It looks like a wing nut has been welded to a bolt on the end of it. Another way to do this is just pull off the bottom hose.

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