Why am I having to fill up at 12 gallons?

Asked by Apr 16, 2007 at 07:15 PM about the 2000 Chevrolet Blazer LT 4-Door 4WD

Question type: Maintenance & Repair

My fuel gauge seems to be fairly inaccurate, flucuating by about a quarter of a tank, edpengin on whether the truck is facing uphill or downhill, but I find that the low fuel light is coming on after only about 160-170 miles in the city, 210 or so on the highway, and yet the truck is only taking about 12 gallons. Any ideas why?

3 Answers


It sounds like the float level switch is sticking, so when you fill up, it doesnt rise all the way to the top of the switch. My truck did this for 6 months or so, and then the problem corrected itself. I assume you have a 22 gallon tank. Just set your trip indicator when you fill up and monitor your mileage that way. Unless you want to pay $500 for someone to go into the tank.

I also have the same problem with mine. But I have just bought it and at about 150 miles my light comes on . I am giving it a few more weeks before I spend the money to fix it. Maybe if I a lucky it will fix itself

0 of 1 people found this helpful.

Mine does the same I just watch my miles and when I hit 250 miles I know it is time to fill up as of yet I have never run out. I to am hoping it will reset its self. I had a grand am that did the same thing and all at once it reset so am hoping again.

1 of 1 people found this helpful.

Your Answer


Looking for a Used Blazer in your area?

CarGurus has 872 nationwide Blazer listings starting at $950.


Chevrolet Blazer Experts

  • #1
    Andrew Olsen
  • #2
  • #3
View All

Related Models For Sale

Used Chevrolet Tahoe
856 Great Deals out of 39,740 listings starting at $1,990
Used Chevrolet S-10
12 Great Deals out of 1,159 listings starting at $1,980
Used Chevrolet Silverado 1500
2,930 Great Deals out of 162,627 listings starting at $1,500
Used GMC Jimmy
193 listings starting at $2,989
Used Ford Explorer
1,132 Great Deals out of 64,251 listings starting at $1,499
Used Ford F-150
3,237 Great Deals out of 224,155 listings starting at $1,300
Used Chevrolet C/K 1500
811 listings starting at $2,995
Used Chevrolet Camaro
506 Great Deals out of 30,983 listings starting at $995
Used Jeep Grand Cherokee
1,086 Great Deals out of 67,197 listings starting at $950
Used Toyota 4Runner
310 Great Deals out of 26,988 listings starting at $1,900
Used Ford Mustang
430 Great Deals out of 41,722 listings starting at $1,488

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.