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 2001 Chevrolet Blazer owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact's girlfriend owns a 2001 Chevrolet Blazer. The contact stated that fuel was leaking from the top of the fuel tank. There was an abnormal fuel odor detected. Additionally, the vehicle was slow to start. There were no warning lights illuminated. The contact called the local dealer however, the vehicle was not diagnosed nor repaired. The manufacturer was not contacted. The contact was concerned about the fuel odor and a possible fire. The failure mileage was unknown.
This complaint cover 2 occurrences, 1st aug. 19,2002 & the latest of March 3, 2004. My daughter was driving on the freeway both time with her mother, when all of a sudden the engine stalls, and would not restart. Having towed it to the stewart dealership in colma, ca. It was found that the fuel pump had gone bad both times. The 1st occurrence at 32,090 miles, the 2nd at 66,442 miles. The dealership proceeded to tell me that the reason for the first failure, was that my daughter was driving too much with less than 1/2 tank of gas. The repair was made after a delay to get the part which was not in stock in california. Now this afternoon I was informed that the reason the fuel pump went out again was because the fuel filter was completely plugged up. This car was bought new from the same dealership- 03/01/01- now just barely 3 years old it is having it's third fuel pump on it. …
Not only have I had problems early with hub and bearing-- and also replaced ball bearing-- now the ABS-- manufacturers has done poor job on brake. Wheel parts- very cheap parts-- many talk about it and know that the Blazer has had problems with these parts. My family has purchased Chevy's for years-- I am now never about to purchase a Chevy again. While I pay my car payment, I always purchase new. I am always also paying for work done on this vehicle, and I am talking- over 2,000 so far and again have to go in today-- I May even trade it in I am so pissed. We also had problems with my husbands truck..I don't know what they did, or who they purchased their parts from, but surely went to cheap parts, they( Chevy) put many consumers in a bad spot. And I have written a complaint before- when I had the Chevy Blazer 2001 for a year half. …
Vehicle stopped (at 9:30p.m.) while I was turning a corner. No warning signs/lights/indicators. Mechanic told me the fuel pump had to be replaced. The first fuel pump obtained was defective and leaked. Mechanic just received another fuel pump - back ordered. I am a single mother of a teenager who is supposed to get her license next month. This is the only car we have. So, the consequences have been devastating financially, mentally, and emotionally...now it is christmas eve and we still do not have the car back! The fact that there are other reports of this same dangerous problem with fuel pumps in Chevy blazers is quite disturbing. I have never had a problem like this with any other make of vehicle (Honda, Toyota, Oldsmobile, mercedesbenz) in the 30 years I've been driving! I have written to Chevrolet and am demanding reimbursement for parts and labor. …
Any time I am driving my fuel gauge goes crazy. I never know how much fuel I actually have because it constantly goes up and down. I've ran out of gas a few times because it shows I have 1/4 tank or more and then it'll just go down all the way, then shoot up 3/4 tank and so on. When I'm coming to a stop, especially in small downhills, my brake pedal starts vibrating and barely slows down. I get nervous all the time because I'm afraid my car will not stop. It also does this if I'm starting to brake, and one of the wheels hits a small bump in the road, then it's almost impossible to brake normally because the brake pedal starts vibrating, the ABS brakes light comes on, and my car will not slow down which is very scary especially if I have my 3 year old in the car.
Gas gauge goes to empty and "low fuel" light comes on at anytime while driving, stays on for several seconds to several minutes and then gauge goes back to correct reading and light goes out. After several weeks of this "service engine soon" light came on. Personal technician reported that this is a common problem in vehicles of all brands and related to, the gas cap. Advised to turn gas cap for at least 3 clicks when done fueling and not to take the cap off the tank when the motor is running. Replaced gas cap and reset the computer, it was fine for 2 weeks. Gauge acting up again, mechanic going to pull tank and check if a lose baffle is interfering with the sending unit. May have to replace sending unit.
I have reviewed other owners complaints regarding their front suspension, fuel pump with random shut offs. My vehicle is experiencing the same and similar problems. As of today my vehicle is in the shop;I was doing 35-40 MPH when vehicle just un expectedly shut off. I was stranded on a major road which cause a significant traffic delay. I have an oil leak from the hose leading to my oil filter and the vehicle pull to the right sharply if I release the steering wheel. The vehicle makes a popping sound when turning. These problems are hard to find just an isolated incident when so many consumers are having the same problems.
Fuel gauge fluctuates between empty and 1/3 full without warning. This happens in park and when driving. You never know how much gas you have. I have seen it drop form 1/4 full to completely empty in seconds. I have run out of gas on way to work when gas gauge said 1/4 full when I started off to work, only a couple of miles away. I have told local Chevy dealer ( h & h ) about problem when having service but they said that was not a problem, was probably because you were on a slope. This has been an ongoing problem since I originally purchased SUV new.
Vehicle was stalling without warning and could not be restarted until a minimum of 30minutes had elapsed. Vehicle checked by dealer who determined original delco battery leaked through the battery tray and damaged the function of the vehicle's computer. Ts consumer stated the engine stills shuts off at times. The throw-out bearings were noisy. The dash lights become very hot after vehicle has warmed up. Door on fuel tank rattles when moving.
Since I bought my 2001 Chevy Blazer, I've had to replace ball joints everytime I have a front end alignment. This year I've replaced 3 wheel bearings, fuel pump, and I just lost my transmission. I've had the light recall fixed. My service engine light stays on, but you cannot put a computer to it because it doesn't work. My ABS light comes and goes. Whats next?
Fuel System complaints in other Blazer years
Frequently asked questions
How common are fuel system problems on the 2001 Chevrolet Blazer?
NHTSA has 33 complaints about the fuel & propulsion system of the 2001 Chevrolet Blazer, 10% of the model year's 326 complaints. The component named most often is delivery › fuel pump (9 mentions).
Is there a recall for 2001 Chevrolet Blazer fuel system problems?
No. NHTSA lists no fuel & propulsion system recall for the 2001 Chevrolet Blazer, though it has 3 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 2001 Chevrolet Blazer fuel system problems start?
Half of the complaints with a recorded mileage happened before about 66,000 miles, and 21% before 25,000 miles.
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.