Which parts fail
Components named in complaints (fuel pump, injectors, fuel tank, hybrid and EV propulsion).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2000 Chevrolet Blazer owners, lightly cleaned up (personal details are redacted by NHTSA).
The handle that allows you to recline the seat broke off flushed with the seat, this happened to both the driver and passenger seats in June 2005. The hood will not pop up when the lever was pulled until one banged on the grill or the hood in certain spots, which just started in March of 2007. The gas mileage dropped from 20 mpg to 16 mpg within 6 months. The back glass stuck and was hard to open, started in 2006. When turning on the air conditioner (A/C ) the car had no power, I have to turn it off when accelerating on the interstate or on hills. If the cruise control was set it kicked off when the A/C was on. When I needed to stop quickly the brakes failed, and felt a grinding sensation through the pedal, but the mechanic changed the brakes and checked the rotors, but hasn't found any problem. Suspected a defect somewhere in the brake system\ as of 2005. …
Fuel sensor problem that's been going on with a lot of 2000 Chevy Blazer also trail blazers and also the distributor there is no seal under the distributor cap cause it to have moisture and cause it not to run and you have to replace it this is to the company or whoever's in charge now the fuel system itself is called a spider sense or what I call it not to run it all the time they must be some type of filter besides the one on side of the vehicle itself because they go out within a year or maybe two years or so this must be addressed so hopefully I get some information to help fix the vehicle that I don't think you I hope I could get some information about it because the fule sensor is a big deal wen they last for about a year and then to buy one for about 400 dollars and then pay another 1000 dollars for labor I think that the injection for the fule sensor should be addressed …
The right rear and both front brake flex lines failed on two separate occasions. The consumer reported the problem to the Chevrolet headquarters and was told there was no recall or warranty for the failure.
Problems that are not saftey issues: air conditioning doesn't work; door hinge pin needs to be replaced; driver's window slips off track to the outside of the frame, resulting in the back side of the window cracked at least a 1/4 of an inch (was told by friendly Chevrolet in springfield il that this is a design problem and can not be fixed; called Chevrolet and was told to take it back to dealer and pay them to reevaluate the problem; ) safty issues: ball joints need to be replaced;gas gauge sending unit doesn't work;;differential is leaking and plug connected to this needs to be drilled out and rethreaded to find out how bad the leak is; windshield wiper on driver's side loose and flips off to the left of the windshield in heavy rain and snow; electrical harnass needs to be replaced; engine insolation pealing off under hood; engine light on continually; car stalls intermitantly(first …
The fuel pump,line and tank are faulty at 35000 miles. I bought it as a used car from santa ana Hyundai who agreed to fix the fuel pump but did not. The transmission is not changing gears properly, it would not start when I turned it off to get gas on 9-26-03, the left front end is popping with a loud noise,the brakes are not antilock brakes,it feels as if I am hitting metal when I stop hard,the panel lights would flicker, lights on dash board when flash when I had seatbelt on. I had a Chevrolet dealership fix the minor things. The battery cable was loose and they oiled the joints to stop the squeak. The dealer refused to fix the fuel pump which is unsafe and demand I pay him money that is already above the price of this car. …
I bought a 2000 Blazer in 2002. I took my vehicle overseas in 2003. Much to my surprise, the gas gauge stopped working properly one day in 2004 causing me to run out of gas on a major international interstate. I took it to the dealership when I came back to the states only to be told, that something was wrong with the fuel pump. Not only that, the module also has to be replaced because the fuel pump and module comes as a unit and you cannot replace the fuel pump without replacing the module. I am being told I have to pay $950 to have this problem fixed. I know I am not the only one with a Blazer who is having this problem. GM has failed time and time again to acknowledge this as a manufacturer problem and people are losing money because of it. …
Gas gage bounces around and fuel light comes on even when I know the car has a full tank. I have to track mileage every time I put gas in the car. I also have a problem with fuel pump not getting power and r I have replaced the fuel pump 3 times and it will have the same problem days to wks after replacing the fuel pump. I have searched on google and their are many people having this same issue. I have taken it to 3 different shops and no one can figure it out I am very frustrated. Their is code that shows up when tested. The car has broke down many times with my daughter in it. I never know if I turn the car off if it will start back up. At times in the morning it wont start at all and my daughter is late to school due to the car not starting and having to find her a ride. For the past 4 days the car will not start at all. Their is no power getting to the fuel pump. I am so frustrated!!
My 2000 Chevrolet blazers fuel level sending unit went out after 6 mos of owning the vehicle I bought it used in 2003 and all the sudden the gas gage wasn't working so I took it in to see what was wrong and I was told that the fuel level sending unit went out. So I started asking around and a lot of owners of the same make, model, and year also complained that theirs went out as well I got quotes on how much to fix it and was told that the price range was $380-$460. And I would have to replace the whole fuel tank just to get it fixed. Also the rear-end differential broke and it took 3 months to finally find one because the manufacturer doesn't make the part for that year anymore. I am very disappointed in the quality of my car and strongly regret buying it with all the problems it has.
2000 Blazer started surging. After several months of surging, one day car would not accelerate on highway and a few minutes later it stalled. It restarted but after several blocks, it stalled again. This kept happening. Car was towed by aaa 67 miles to my dealer. Dealer could not find anything wrong but thinks it is probably the fuel pump. Car is still surging. After 1.5 months car stalled again while idling in a line of cars. It restarted after some difficulty. I then took it to another Chevrolet dealer. Again they couldn't find a problem. Said they couldn't do anything until something showed up on the computer or car completely dies and won't restart. So I don't feel safe driving the car since I don't know when it might shut down on me in a dangerous situation.
2000 Chevy Blazer 4.3l v6 76K miles 2 door the sending unit on the fuel pump has gone bad and is causing my gas gauge to give an incorrect reading. I must now use the trip odometer to guess when to put gas in my truck. From research I've done this a very common problem with blazers of this year. GM should offer a recall for this $600+ job also replaced the upper & lower ball joints, idler arm and both wheel bearings in the past month. Seat recline lever on passenger side has also snapped off and rear washer fluid sprayer no long works. I've owned 4 other Chevy/GMC vehicles and had to replace the fuel pump in 3 of them. I will very much consider these issues and how GM handles this most recent one when I go to buy a new truck next year.
Fuel System complaints in other Blazer years
Frequently asked questions
How common are fuel system problems on the 2000 Chevrolet Blazer?
NHTSA has 84 complaints about the fuel & propulsion system of the 2000 Chevrolet Blazer, 14% of the model year's 589 complaints. The component named most often is storage › fuel gauge system (27 mentions).
Is there a recall for 2000 Chevrolet Blazer fuel system problems?
No. NHTSA lists no fuel & propulsion system recall for the 2000 Chevrolet Blazer, though it has 4 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2000 Chevrolet Blazer fuel system problems start?
Half of the complaints with a recorded mileage happened before about 60,000 miles, and 3% before 25,000 miles.
Is it dangerous?
Owners linked 2 crashes, 0 fires and 0 injuries to fuel & propulsion system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.