Question about GMC Sonoma

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Where is the coolant drain plug on a 2003 sonoma?

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On the bottom of the radiator ??

Got to look for it.

Should be a plastic wing nut you can see.

May have to reach down or remove shields
and get from bottom

Posted on May 23, 2011

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Posted on Jan 02, 2017

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1 Answer

How to change radiator drain plug


Simply loosen the old one in the radiator to let the coolant run out. After the radiator is empty, pull the old drain cock out of the radiator and install the new one. Tighten the new one up firmly and refill with coolant. Let the engine run to reach normal operating temperature and check for leaks.

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2000 gmc sonoma 2.2l


Most radiators have a drain valve or plug on the bottom. If your radiator does not, you would need to remove the lower radiator hose to drain the coolant.

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Do I need a tool to drain the radiator on a 2003 GMC SONOMA


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Nov 29, 2010 | GMC Sonoma Cars & Trucks

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How do I drain the coolant in a 1998 GMC Sonoma?


Hello,

Open the bonnet of your 1998 GMC Sonoma, look under the radiator, you will see a hose/pipe coming out of the radiator going into the engine of the 1998 GMC Sonoma. Remove the hose and the coolant will drain.

You will see a screw holding the hose to the engine, get a screw driver to loosen the screw so that the hose can be easily removed.

After draining, pour more water into the radiator to flush out the coolant entirely from the radiator.

I hope this helps.

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Draining old coolant how does the drain plug work on radiator can'nt get it to move.


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1 Answer

How to change the thermostat


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Where is the engine coolant drain bolt on a 2003 2azfe camry? i found the radiator drain but can't find the engine drain plug-a photo would be great


The textbook method is to remove the drain plug on the bottom of the radiator.

Most drain plug is make of inexpensive nylon/plastic and it may fall apart while you turn it.

The professional method is to loosen the lower radiator clamp and drop to lower radiator hose.

Drain the coolant onto a large drain pan and recycle the coolant

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I want to drain rad on 03 gmc sonoma ,How is the


As you are turning left, pull on the plug, use pliers. it should pull out maybe 1/4 turn.

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1 Answer

How do i install block heater in 91 2wd 4 cyl sonoma


Hi ryan, yes my friend the best bet is to drain the coolant,as for the block heater,not sure which side for the sonoma but basically it is a frost plug with and internal element attached to it,once you unplug the cord typically there will be a small screw to remove, use a small punch or whatever will work and pop one side to roll the block heater so you can remove it,simple my fried,by the way a new block heater will come with installation instructions :) have fun and good luck ryan take care.

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