# 2003 Chevy Silverado 1500 HD

**URL:** <https://community.cartalk.com/t/2003-chevy-silverado-1500-hd/31507>\
**Category:** Maintenance/Repairs\
**Created:** [June 6, 2009, 11:24pm UTC](https://community.cartalk.com/t/2003-chevy-silverado-1500-hd/31507 "2009-06-06T23:24:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![6liter](https://avatars.discourse-cdn.com/v4/letter/6/df788c/32.png) [@6liter](https://community.cartalk.com/u/6liter)\
**Post date:** [June 6, 2009, 11:24pm UTC](https://community.cartalk.com/t/2003-chevy-silverado-1500-hd/31507/1 "2009-06-06T23:24:52Z")

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Can anyone tell me where the heck the radiator drain valve is on this model.  
  
 I cannot for the life of me find it anywhere.  
  
 Also when hooking up a back flushing kit, what hose from the firewall do you attach the flush tee to? Looking at the hose’s from the front of vehicle is it the left or right hose?  
  
 Thanks in advance…

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**Author:** ![Docnick](https://avatars.discourse-cdn.com/v4/letter/d/ecae2f/32.png) [@Docnick](https://community.cartalk.com/u/Docnick)\
**Post date:** [June 6, 2009, 11:30pm UTC](https://community.cartalk.com/t/2003-chevy-silverado-1500-hd/31507/2 "2009-06-06T23:30:23Z")

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I don’t know, but don’t be surprised if there is not any; many car models now have no drain cock since he garages flush the cooling system differently.

By the way, where I live there is a $300 fine for dumping antifreeze mixture down the drain. I have stopped backflushing my cooling systems long ago and let my mechanic do it. Please check your local bylaws!