will a bad thermostat ruin my engine

Asked by Nov 18, 2014 at 07:55 PM about the 2004 GMC Yukon SLT

Question type: Maintenance & Repair

3 Answers

58,575

If stuck open,no,if stuck closed yes,if truck is heating up,then it may be stuck closed.

35

Changing a thermostat on a 2004 Yukon is a relatively simple job fro any mechanic or do-it yourself-er. If you suspect a bad thermostat, I have to recommend changing it.

16,255

Stuck open will still ruin it just at a much slower rate. Sludge will build up over time and it will never run efficiently and run rich constantly and pollute the oil more quickly. We are talking about years tho. Stuck closed will kill it in minutes

Your Answer

Add photo

Related Questions

  • What is causing my coolant leak? 1 answer

    I was driving and heard a screaming noise. When I got to where I was going I parked the car, got out, and could hear a leak. I looked under the car and saw yellow fluid pouring out. When I was done ...

    2004 GMC Yukon Denali AWD

    -

    Maintenance & Repair

  • my heat doesnt work in my 2003 yukon,digital thermostat is on 90 1 answer

    no matter how long i let it run it doesnt get hot

    2003 GMC Yukon SLT

    -

    Maintenance & Repair

  • Check Engine Light 4 answers

    05 gmc denali chk engine light flashing, engine loosing power, vibrates ... all of a sudden, no previous issues, maintenance on track. Any guesses

    2007 GMC Yukon Denali AWD

    -

    Maintenance & Repair

  • Engine sputter 4 answers

    I have a 2000 Yukon. When I hit the gas pedal hard seems to bog down for a second then it's fine. I've change the fuel filter plugs and wires and I've also decarbonize the engine. Seems to run a ...

    2000 GMC Yukon SLE 4WD

    -

    Maintenance & Repair

  • How much would a 1999 GMC Yukon be worth with a bad engine? 2 answers

    The engine was overheating and the radiator got replaced and when mechanic was done it wouldn't start.

    1999 GMC Yukon SLE 4WD

    -

    General

Yukon

Looking for a Used Yukon in your area?

CarGurus has 17,693 nationwide Yukon listings starting at $1,777.

ZIP:

Search GMC Yukon Questions

GMC Yukon Experts

#1 clayduster71
clayduster71
Reputation 1,980
#2 Danielle Heller
Danielle Heller
Reputation 440
#3 David Boccabello
David Boccabello
Reputation 380
View All

Related Models For Sale

Used Chevrolet Tahoe
1,086 Great Deals out of 32,099 listings starting at $1,495
Used Cadillac Escalade
371 Great Deals out of 11,094 listings starting at $2,995
Used GMC Yukon XL
396 Great Deals out of 13,092 listings starting at $2,000
Used Chevrolet Suburban
690 Great Deals out of 21,773 listings starting at $2,000
Used GMC Sierra 1500
1,197 Great Deals out of 58,874 listings starting at $2,495
Used Ford Expedition
631 Great Deals out of 23,397 listings starting at $997
Used Chevrolet Silverado 1500
2,759 Great Deals out of 150,219 listings starting at $1,259
Used Ford F-150
3,492 Great Deals out of 207,570 listings starting at $1,273
Used Jeep Grand Cherokee
1,174 Great Deals out of 71,081 listings starting at $495
Used Ford Explorer
1,506 Great Deals out of 74,212 listings starting at $985
Used Toyota Sequoia
183 Great Deals out of 6,830 listings starting at $2,477
Used Toyota 4Runner
429 Great Deals out of 20,862 listings starting at $2,499
Used Dodge Durango
477 Great Deals out of 23,486 listings starting at $950
Used Cadillac Escalade ESV
173 Great Deals out of 5,943 listings starting at $3,994

Used Cars For Sale

2017 GMC Yukon SLT For Sale
499 listings starting at $52,215
2016 GMC Yukon SLT For Sale
7 Great Deals out of 440 listings starting at $38,865
2015 GMC Yukon SLT For Sale
11 Great Deals out of 130 listings starting at $34,999
2014 GMC Yukon SLT For Sale
3 Great Deals out of 76 listings starting at $26,000
2013 GMC Yukon SLT For Sale
7 Great Deals out of 125 listings starting at $18,644