Problems · NHTSA complaints

2004 Chevrolet Blazer problems

Owners filed 50 complaints about the 2004 Chevrolet Blazer with NHTSA between Mar 2004 and Mar 2018. The most-cited component is electrical system (10).

Complaints
50
Filed with NHTSA
Crashes
4
Reported by owners
Fires
0
Reported by owners
Injuries
5
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Electrical system10
  2. Structure6
  3. Suspension6
  4. Service brakes4
  5. Steering4
  6. Power train4
  7. Engine and engine cooling4
  8. Air bags3
  9. Tires3
  10. Seat belts2
  11. Visibility2
  12. Latches/locks/linkages2
  13. Service brakes, hydraulic2
  14. Exterior lighting2

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 10, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
200412
20057
20062
20074
20084
20097
20100
20111
20120
20132
20148
20150
20161
20170
20182

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Electrical system

10 reports1 crash
“TL* THE CONTACT OWNS A 2004 CHEVROLET BLAZER. THE CONTACT STATED THAT THE KEY BECAME LODGED IN THE IGNITION SWITCH. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNCIAN DIAGNOSED THAT THE IGNITION WAS DEFECTIVE AND NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 60,000 AND THE CURRENT MILEAGE WAS 90,000.”
Owner complaint to NHTSAFiled Jul 1, 2014Electrical systemODI 10607284

Structure

6 reports
“WHILE MAKING A RIGHT TURN INTO A PARKING LOT, MY DRIVER'S DOOR FLEW OPEN. NOW THE DOOR WILL NOT STAY CLOSED. I AM ABLE TO MANUALLY MOVE THE LATCH WITH THE DOOR OPEN BUT IT WILL NOT ENGAGE TO SECURE THE DOOR SHUT. *TR”
Owner complaint to NHTSAFiled Dec 4, 2014StructureODI 10662230

Suspension

6 reports1 crash
“2004 CHEVROLET BLAZER. CONSUMER WRITES IN REGARDS TO VEHICLE IGNITION SWITCH PROBLEMS. *SMD THE CONSUMER STATED THE IGNITION WAS FIXED 3 DIFFERENT TIMES. THE VEHICLE HAD TO BE TOWED, BECAUSE IT WOULD NOT START, DUE TO THE FAULTY IGNITION CYLINDER WOULD NOT TURN. IN NOVEMBER 2013, THE VEHICLE WOULD NOT GO INTO NEUTRAL OR PARK AND THE VEHICLE COULD NOT BE TURNED OFF. PER THE MECHANIC, THE IGNITION LOCK CYLINDER CAME APART, AGAIN AND IT HAD TO BE REPLACED. THE MECHANIC STATED THE PROBLEM WAS DUE TO A HEAVY KEY CHAIN. THE CONSUMER ALSO STATED THERE WAS A PROBLEM WITH THE TWO WHEEL THRUST ALIGNMENT, IN WHICH THE VEHICLE HAD TO BE SERVICED TWICE WITHIN 7 MONTHS. THE CONSUMER NO LONGER OWNS THE VEHICLE. *JB”
Owner complaint to NHTSAFiled Mar 31, 2014Suspension, Electrical systemODI 10575578

Service brakes

4 reports
“COUPLE WEEK AFTER BOUGHT, COMPLETE BRAKE FAILURE. COST 11OO TO FIX.FEB. 26 LOOK OUT DOOR IN MORNING AND AIR BAGS EXPLODED AND CAUSE ALL ELECTRIC SYSTEM TO GO OUT. BRAKE WAS ON STREET, AIR BAG WAS IN DRIVEWAY AT HOME.”
Owner complaint to NHTSAFiled Mar 8, 2018Air bags, Service brakesODI 11076948

Steering

4 reports
“THE PROBLEM IS WITH THE IGNITION. THE KEY DOES NOT RELEASE AFTER IT HAS BEEN TURNED TO THE OFF POSITION. THE CAR MUST BE TURNED BACK ON AND OFTEN MOVED IN REVERSE THEN FORWARD A NUMBER OF TIMES BEFORE THE KEY WILL RELEASE FROM THE IGNITION . *TR”
Owner complaint to NHTSAFiled Jul 1, 2014Steering, Electrical systemODI 10607522

Power train

4 reports1 crash
“GOT INTO THE VEHICLE IN THE MORNING AND WHEN I PLACED IT INTO REVERSE I HEARD A LOUD SHATTERING NOISE AND THE CAR WOULD NOT BACK UP. I HAD IT TOWED TO THE TRANSMISSION SHOP AND THEY REPORTED THAT THE "SUN" GEAR HAD SHATTERED WITH A REPAIR COST OF 2300.00. THEY ALSO TOLD ME THAT THIS IS A VERY COMMON PROBLEM WITH GM TRANSMISSIONS DUE TO A WEAK GEAR FROM THE MANUFACTURER. AFTER RESEARCHING IT ON LINE I AM FINDING MANY OTHER PEOPLE WITH THE SAME PROBLEM. THE GM CUSTOMER REP WAS VERY SHORT AND STATED THAT THE CAR WAS OUT OF WARRANTY AND I HAVE NO CLAIM. IF THIS WAS A KNOWN ONGOING PROBLEM GM COULD HAVE RECALLED THESE VEHICLES AND SAVED A LOT OF GRIEF FOR THEIR CUSTOMERS. I FEEL THAT I SHOULD BE REIMBURSED SOME OF THE EXPENSE OF THIS KNOWN DEFECT. *TR”
Owner complaint to NHTSAFiled Dec 31, 2013Power trainODI 10557986
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.