The 1947 - Present Chevrolet & GMC Truck Message Board Network

Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board


Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 02-04-2019, 10:06 AM   #1
Registered User
Mr_Rich's Avatar
Join Date: May 2006
Location: Santa Maria, Calif.
Posts: 663
Radiator/ cooling system flush

I have my '89 K1500 EC parked in the driveway getting much needed cooling system maintenance. I've let it go for the last five years since I installed this engine and it's finally caught up with me. I literally had rust flakes clogging the cooling system like red kitty litter; no kidding. It lined the upper radiator hose and when I squeezed the hose it "crunched". Don't ever let your cooling system get this bad. Phew. Once the storm is over I plan to pull the radiator and flush it very well to get any remaining residue out. I've flushed the block and heater core already and another plan of attack is to replace a leaking freeze plug in the block behind the alt./ PS pump. My thoughts are to use Dexcool since this is the coolant I have on hand since two of my other vehicles use it. Thoughts? I know some people don't like the stuff but I don't have a problem using it in my newer vehicles.
1989 K1500 Chev. EC
Original owner; some of the aftermarket parts I've installed are Borla headers, Hypertech chip, Edelbrock water pump, and a Stillen rear disc brake conversion kit.
2009 Hummer H3T 3.7L 5M.
1997 K2500 Chev. EC 7.4L/ 4L80E
Mr_Rich is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -4. The time now is 09:44 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Copyright 1997-2013