Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
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).
There is an error code in teh computer p0410 the secondary injector needs to be replaced again and again, it was covered under warranty the first time. Then wemoved to massachusetts and the light came on again which I then got it fixed and paid for it on my own because it wasn't under warranty, and the light came on again with teh same code p0410 the secondary air injector. I haven't been abel to get the vehicle inspected due to teh error code becuase it caused an emmsisions failure. The second time cost me $400, I've looked on the internet only to find that many other poeple have the same problem and no recall has been issued as of yet. I have contacted Chevrolet about the problem, which to no avail they would not cover the part orany cost of a new one. The vehicle was still not inspected nor will ever be because replacing the part apperently wasn't the problem. …
The electric smog pump on my 2001 Chevy Blazer had failed when pump filled with water and shorted out. This is caused due to the short intake hose to the pump. This is an apparent known issue with GM, but they will not replace the pump. This also causes the vehicle to fail emissions testing. GM wanted $400 for the pump + labor to repair the issue. Once the part became available for 3rd party vendors, we were able to replace the pump ourselves, added a longer intake hose, and the vehicle now runs correctly. I feel that since GM is aware of this issue and it adversely effects the emission control of the vehicle, the repair should be GM's responsibility.
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.
Dt: consumer owned a 2001 Chevrolet Blazer which he purchased in January 2002. The vehicle stalled six times in 2002, two times in 2004, and two times on July 21, 2005. The vehicle was never taken to the dealership for this problem. Also, the consumer has not contacted the manufacturer. This happened at any speed. The vehicle did not always start right up. The problem was more persistent in the summer.
The ac compressor has been replaced 3 times - the last time was on 9/2003. The exhaust pipe seal has been replaced, the muffler has been replaced, cluster dash went out and replaced, front suspension replaced, brake lights went out and replaced. The back window was not aligned properly and had to be fixed. The front passenger door had to be realigned and the door sill replaced.
Tl contact owned a 2001 Chevrolet Blazer. The contact stated that the air pump filled with water and froze. The vehicle was taken to an authorized dealership where the air pump was replaced. The failure mileage was approximately 40,000. The current mileage was approximately 60,000.
Engine failure due to a lack of lubrication to the number 6 cylinder. The failure occurred with only 60K on the truck. The truck had regular oil changes and the oil level was checked every 500 miles.
I purchased my vehicle in 4/01 and seven months later I began experiencing a host of problems with my vehicle, starting with multifunction switch worn, then hood hinges worn, exhaust (muffler broken) right speaker inoperable, left front seat adjuster broken, grill assembly loose, brake pedal broken and finally transmission failure (needs replacing). I have done a bit of inquiring to other Chevy Blazer owners and found out that they have or had experience some if not all of the same problems that I am experiencing now. I am hereby respectfully requesting your assistance in rectifying this complaint. I don't think that after 11mths of purchasing my vehicle I should be needing my transmission replace. From passed experienced with replacing a transmission on my wife new vehicle (Mazda mx3) back in 1992 it has never been the same. We had been having the same problems and more with it. …
2001 Chevrolet Blazer developing various problems.** answer required***. The differential pinion shaft seal was leaking. When it rained the transmission slipped, the cigarette lighter was inoperative, the lighter socket was replaced. The heater was not blowing hot air, the service engine soon light illuminated, the brake light was inoperable, the directional switch was replaced. The front rear rotors were rotted, the rear wheel well molding was coming undone, the drivers window was leaking water. The vehicle was not shifting properly, the alternator was replaced, the tail gate glass would not lock, the driver door did not shut easily, the battery was replaced. The headlights were inoperable. The driver seat recliner was replaced, the retractor in the seat belt was reset. The rear window molding was loose. The oil cooler lines were leaking.
I purchased a used 2001 Chevrolet Blazer last March. I had the vehicle for 1 month and the service engine soon light came on. I took it to the garage and they said I needed an air intake box. I was able to get a used one. After one year I am back to the same situation. This air intake box that was another vehicle had the same problem. When removed the box contains alot of condensation. The service garage does not know why this happens. The condensation I am sure is whats causing the box to fail. I would like this investigated to see if this is a recall.
Engine complaints in other Blazer years
Frequently asked questions
How common are engine problems on the 2001 Chevrolet Blazer?
NHTSA has 23 complaints about the engine & cooling of the 2001 Chevrolet Blazer, 7% of the model year's 326 complaints. The component named most often is engine › gasoline (6 mentions).
Is there a recall for 2001 Chevrolet Blazer engine problems?
No. NHTSA lists no engine & cooling 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 engine problems start?
Half of the complaints with a recorded mileage happened before about 47,000 miles, and 11% 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.