I have a 99 Chevy Tahoe I replace the radiator now the heat will not get hot but it will get hot when I take the radiator cap off but as soon as I put the radiator cap on it gets cold what do I do

Marquis Mason

Asked by Nov 13, 2015 at 06:17 PM about the 1999 Chevrolet Tahoe

Question type: General

4 Answers

Marquis Mason

I have replace a water pump in the thermostat


Did you install the thermostat upside down?


You would need to bleed the air pockets out of the cooling system, by having the radiator cap off, engine running. Let it warm up to operating temp. but do not be revving it up or you will get a shower. Coolant may push out the radiator witch is fine, that would be the air pockets working their way out. Keep filling as the coolant level drops in the radiator, until full. Put the radiator cap on while the engine is still running. Then you can shut it off.


F.o.R. asked, is the thermostat installed properly?

Your Answer

Add photo

Related Questions


Looking for a Used Tahoe in your area?

CarGurus has 36,351 nationwide Tahoe listings starting at $1,700.


Search Chevrolet Tahoe Questions

Chevrolet Tahoe Experts

#1 FordNut
Reputation 740
#2 Tom Demyan
Tom Demyan
Reputation 630
#3 Rowefast
Reputation 540
View All

Related Models For Sale

Used GMC Yukon"
537 Great Deals out of 14,691 listings starting at $1,500
Used Chevrolet Suburban"
667 Great Deals out of 24,186 listings starting at $1,500
Used GMC Yukon Denali"
26 Great Deals out of 4,666 listings starting at $7,995
Used Cadillac Escalade"
376 Great Deals out of 11,252 listings starting at $2,999
Used Chevrolet Silverado 1500"
2,427 Great Deals out of 143,998 listings starting at $1,995
Used Ford Expedition"
579 Great Deals out of 21,508 listings starting at $2,111
Used Ford Explorer"
1,312 Great Deals out of 71,772 listings starting at $300
Used Ford F-150"
3,162 Great Deals out of 216,425 listings starting at $1,000
Used Toyota 4Runner"
346 Great Deals out of 18,739 listings starting at $2,400
Used Jeep Grand Cherokee"
1,158 Great Deals out of 73,680 listings starting at $1,500
Used Dodge Durango"
391 Great Deals out of 22,687 listings starting at $1,000
Used GMC Sierra 1500"
1,021 Great Deals out of 56,344 listings starting at $2,400

Used Cars For Sale

2017 Chevrolet Tahoe For Sale
3,588 listings starting at $42,990
2016 Chevrolet Tahoe For Sale
61 Great Deals out of 12,053 listings starting at $34,544
2015 Chevrolet Tahoe For Sale
189 Great Deals out of 3,947 listings starting at $29,770
2014 Chevrolet Tahoe For Sale
38 Great Deals out of 760 listings starting at $16,486
2013 Chevrolet Tahoe For Sale
128 Great Deals out of 2,116 listings starting at $12,900