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98 Where Is The Radiator Drain?


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#1 nubuilder

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Posted 06 February 2010 - 01:53 PM

OK, I bought Prestone antifreeze only to get home and read my manual saying I need DEX-COOL® antifreeze. Took the regular stuff back and bought 4 gallons of Prestone DEX-COOL @ $11.50/gal. The only reason I bought 4 is because they were buy 1 get 1 free. I need 2.5 gallons.

My question is: where is the drain plug for the radiator on a 1998 Chevy K1500?

I have taken off the skid plate (the plastic one) that goes from under the radiator to the front cross member. I don't see anything.

I'm trying to do this today, so if you have any words of wisdom, send them my way.
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#2 Zembonez

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Posted 06 February 2010 - 02:03 PM

Typically there is a petcock on the passenger side tank at the bottom. It can be hard to see. Even if you do find it, they drain SLOWLY. I usually just pull the bottom hose.

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#3 nubuilder

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Posted 06 February 2010 - 02:17 PM

The lower hose is on the other side of the frame rail. To get to it I have to take off the inner fender. Does this sound right? Is it really that hard to get to?
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#4 Zembonez

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Posted 06 February 2010 - 02:20 PM

Yeah. They don't make it easy! Look at the bottom of the right side tank and see if there is a drain.

EDIT: Some aftermarket radiators don't have a drain. If it has ever had a new radiator installed (pretty common), it might not be there.

Edited by Zembonez, 06 February 2010 - 02:20 PM.

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#5 nubuilder

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Posted 06 February 2010 - 02:31 PM

Guess I'll be trying to get the inner fender out then. Thanks.
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#6 nubuilder

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Posted 06 February 2010 - 03:07 PM

Quick question; can I use carb cleaner to clean my throttle body?
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#7 Zembonez

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Posted 06 February 2010 - 04:56 PM

Quick question; can I use carb cleaner to clean my throttle body?

They recommend a spray made for throttle bodies (plastic safe). Carb cleaner might eat into the p0lastic stuff used in the intake.

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#8 nubuilder

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Posted 06 February 2010 - 05:30 PM

I'll remember that.

I used carb cleaner sprayed onto blue shop towels to wipe the inside for the throttle body. I didn't stray anything into the plastic intake tract.

Thanks again.

I'll try to drain my radiator tomorrow morning. Wish me luck.
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