how to tell if themo. is opening properly

35

Asked by Feb 27, 2015 at 02:26 PM about the Chevrolet C/K 1500

Question type: Maintenance & Repair

besides sqeezing the upper radiator hose to feel for water flow, is the a better way to test thermostat without  removing it and testing??  truck is a 2005 Silverado 5.3 vortec with 107k miles, and is there a fan relay sensor that gets faulty. fans seem to only come on when air is on, now...... any advise out there??  thanks, kmac.

2 Answers

146,465

Pop radiator cap cold. Start the truck and let it warm up, have patience it might take a few minutes...2 to 5 minutes and watch coolant. It should be full all the way to top. Keep an eye on it, and when temperature gauge gets toward the middle, or less, watch for flow of coolant. If the coolant remains motionless after truck is fully at operating temp, the thermostat is bad, or water pump.

1 out of 1 people think this is helpful.
146,465

As for fan relays, they are in a separate box underhood next to fuse box drivers side. I could not find an image, but you can see it here Chapter 5 Page 135 http://www.manualowl.com/am/Chevrolet/2005-Silverado%201500%20Pickup/Manual/395

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Chevrolet C/K 1500 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chevrolet C/K 1500 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,960
#2 John Saffrahn
John Saffrahn
Reputation 2,390
#3 Rowefast
Rowefast
Reputation 1,400
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,605 Great Deals out of 152,728 listings starting at $1,500
Used GMC Sierra 1500
1,004 Great Deals out of 60,427 listings starting at $1,299
Used Ford F-150
3,137 Great Deals out of 208,987 listings starting at $1,200
Used Chevrolet C/K 2500
261 listings starting at $2,995
Used Dodge Ram 1500
517 Great Deals out of 13,131 listings starting at $1,800
Used Chevrolet Silverado 1500HD
19 Great Deals out of 316 listings starting at $4,988
Used Chevrolet Silverado 2500HD
397 Great Deals out of 27,338 listings starting at $2,998
Used Chevrolet Tahoe
869 Great Deals out of 28,110 listings starting at $1,700
Used Chevrolet C/K 3500
4 Great Deals out of 283 listings starting at $2,995
Used Toyota Tacoma
722 Great Deals out of 32,217 listings starting at $2,750
Used Chevrolet Colorado
326 Great Deals out of 17,982 listings starting at $1,995
Used Chevrolet S-10
11 Great Deals out of 1,626 listings starting at $1,399
Used Chevrolet Silverado 2500
8 Great Deals out of 290 listings starting at $3,995
Used Toyota Tundra
659 Great Deals out of 28,443 listings starting at $2,798