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10-01-2009, 07:08 AM | #1 |
Registered User
Join Date: Aug 2007
Location: Vandalia, Ohio
Posts: 396
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2000 Silverado heat problem
Hey All,
I'm from over on the 60'-66' board. Back last summer I bought a 2000 Silverado LT for a daily driver. Love the truck. However it was pretty damn cold here in Ohio this morning. The first day I used the heater in my truck, and it just about has no heat at all. Slightly warm at best. This just won't do for an Ohio winter. At least I was able to keep my butt warm via the heated seat. Truck temp was around 200'. Should have been putting out plenty of heat. Fan works fine, as does the AC. Any ideas? Thanks, Tim |
10-01-2009, 09:24 AM | #2 |
laying low
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,352
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Re: 2000 Silverado heat problem
Sounds like a plugged heater core. Another result of using Dexcool coolant. In fact I just went through this with my 2000 GMC this week.
When you cold start the engine feel of the heater hoses while it's warming up. One should get hotter than the other one if there is a blockage. If so remove both the hoses from the heater core and use a garden hose with a sprayer on it to back flush the heater core. If you use a white pail or bucket to catch the coolant as it comes out you should see mudlike chunks flush out of the core. Reverse the flow back and forth a few times until all that comes out is clear then reattach the hoses and refill with coolant. It should be hot now. After reading a lot on the "deathcool" as some call it I will be using a chemical flush to rid my truck of it and go with conventional green coolant from now on. The extended life coolant was a good plan but I'll gladly change my regular coolant out every couple of years to prevent this from happening again.
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10-01-2009, 09:29 PM | #3 |
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Join Date: Sep 2005
Location: Lewisville, Nc
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Re: 2000 Silverado heat problem
back flush the heater core and have the whole system flushed and coolant changed
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10-01-2009, 11:21 PM | #4 |
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Location: Denison, Texas
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Re: 2000 Silverado heat problem
Check you coolant level.
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10-02-2009, 01:23 PM | #5 |
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Join Date: Aug 2007
Location: Vandalia, Ohio
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Re: 2000 Silverado heat problem
Thanks for the replys. It has plenty of coolant in it, so flush it is.
Thanks again, Tim |
10-02-2009, 11:04 PM | #6 |
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Join Date: Nov 2007
Location: Sask Canada
Posts: 1,666
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Re: 2000 Silverado heat problem
pull the cabin filters and replace if dirty. thats the problem 9 times out of 10.
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Trueman |
10-06-2009, 01:49 PM | #7 |
Just a nother gear head
Join Date: Jul 2009
Location: Barrington NH
Posts: 501
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Re: 2000 Silverado heat problem
my 2000 has pretty much the same problem, blows warm for aboout a minute then goes cool. only stays warm if the blower is no higher than # 2 or 3. i just did a complete coolant change. and both heater hoses feel about the same temp. has a brand new thermostate too. think i will try flushing the core and replace the cab filter. getting cold here in N.H. need heat.
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10-06-2009, 02:19 PM | #8 |
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Location: Sask Canada
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Re: 2000 Silverado heat problem
the fan pushes the outside air though the filter to the a/c -heat core and out the air ducts. if the filter is pluged it the bypass out side air around the blower fitment area of the blower onto the passenger floor.
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Trueman |
10-06-2009, 09:41 PM | #9 |
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Location: Searcy, Ark. USA
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Re: 2000 Silverado heat problem
Thanks trueman. Just where is that cabin filter located? I'd like to check the condition of mine.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
10-07-2009, 11:12 AM | #10 |
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Join Date: Aug 2007
Location: Vandalia, Ohio
Posts: 396
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Re: 2000 Silverado heat problem
Well, I flushed her out, and installed a new thermostat while I was at it. Now I have great heat. I would like to know more about these cabin filters so I too can check them out.
Thanks Guys, Tim |
10-07-2009, 12:41 PM | #11 |
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Join Date: Apr 2003
Location: Maple Grove, MN
Posts: 497
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Re: 2000 Silverado heat problem
Sounds like a bad actuator for your heater blend door. Remove the battery cables for a minute then reinstall. if that doesn't fix it, take it to the dealer and have them "repark" the doors with the TECH II. If that doesn't work, replace the actuator.
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10-07-2009, 01:28 PM | #12 |
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Location: Sask Canada
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Re: 2000 Silverado heat problem
owners man has a brief discription of how to change it. or on the pass foot well you use i think a #8metric socket and remove the plastic panal. then there is a #8 metric screw head holding a 1 inch wide " L " shape black plastic cover (this screw is pointed to the front just below the lower part of the dash straight up from the lower edge of the trans hump ) then swings down and unhooks. the filters are then slid rear wards to remove. i have used aie and a vac to get buy in the past if there not to dirty. gm usa sight says $26 use this link and agree to the sight regs http://www.newgmparts.com/partlocato...?siteid=213815 then click http://www.newgmparts.com/partlocato...layCatalogid=0 #15 is the 2 filters #25 is the swing Access cover to remove them. the new filter install is as you removed the old ones. the truck is out today or i could snap and up load pics. http://shop.advanceautoparts.com/web..._1039560800___
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Trueman Last edited by 463; 10-07-2009 at 02:21 PM. |
10-07-2009, 01:51 PM | #13 |
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Location: Sask Canada
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Re: 2000 Silverado heat problem
found this one. but the clip does not show them removing the Access cover
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Trueman Last edited by 463; 10-07-2009 at 02:25 PM. |
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