Why does is my overflow tank empty

Asked by Oct 09, 2014 at 10:02 AM about the 2002 GMC Envoy 4 Dr SLE 4WD SUV

Question type: Maintenance & Repair

I had my radiator and coolant overflow tank replaced and my radiator is full with coolant but my overflow tank remains empty.  I can't see any leaks but I don't understand why coolant isn't returning to the overflow tank when the car cools down.  The car doesn't overheat so is this a problem?

2 Answers


Try replacing the radiator cap with a name brand one. See if that helps.

Thanks...will try that this evening.

Your Answer

Add photo

Related Questions

  • Does the 02 envoy have a cabin filter 3 answers

    The car has a musty smell whisen the a/c is on

    2002 GMC Envoy


    Maintenance & Repair

  • Passenger side head light out. 18 answers

    My 1999 GMC Envoy headlight went out and I have taken it to three mechanics and they said they have never seen a headlight bulb like that before. The number on the bulb is 16524491. Auto Zone said the...

    1999 GMC Envoy 4 Dr STD 4WD SUV



  • would would cause gas tank to not take gas when it is empty? 1 answer

    the fuel hand also doesnt work

    2000 GMC Jimmy 4 Dr SLE 4WD SUV


    Maintenance & Repair

  • Why isn't my gas gauge working? 2 answers

    The gas gauge in my 2000 Sonoma isn't working. While I'm driving it stays at the Full mark, when I'm at a stop it drops below Empty. What do I do? I haven't checked anything and honestly don't really ...

    2000 GMC Sonoma


    Maintenance & Repair

  • Change in tank fuel pump gas gauge worked before now it dont 1 answer

    There was a green ping pong size ball in the tank doze it have any thing to do with fuel gauge

    1999 GMC Sonoma 2 Dr SLE Extended Cab SB


    Maintenance & Repair

Search GMC Envoy Questions

GMC Envoy Experts

#1 ericjames
Reputation 360
#2 dandyoun
Reputation 340
#3 T_S_T
Reputation 230
View All

Related Models For Sale

Used Chevrolet TrailBlazer"
131 Great Deals out of 6,221 listings starting at $999
Used GMC Envoy XL"
27 Great Deals out of 905 listings starting at $1,988
Used GMC Yukon"
558 Great Deals out of 14,734 listings starting at $1,500
Used Chevrolet Tahoe"
1,146 Great Deals out of 36,615 listings starting at $1,995
Used Ford Explorer"
1,365 Great Deals out of 72,128 listings starting at $300
Used GMC Yukon Denali"
29 Great Deals out of 4,680 listings starting at $7,995
Used Jeep Grand Cherokee"
1,201 Great Deals out of 74,214 listings starting at $1,500
Used GMC Sierra 1500"
1,045 Great Deals out of 56,526 listings starting at $2,300
Used Ford Escape"
1,709 Great Deals out of 95,099 listings starting at $500
Used Dodge Durango"
404 Great Deals out of 22,812 listings starting at $1,700
Used Toyota 4Runner"
363 Great Deals out of 18,973 listings starting at $2,400

Used Cars For Sale

2005 GMC Envoy 4 Dr SLE 4WD SUV For Sale
5 Great Deals out of 123 listings starting at $3,990