Wrench.Pro

2004 Chevrolet Blazer Recalls, Problems & Maintenance

The 2004 Chevrolet Blazer has no open NHTSA recalls. Owners report 8 recurring issue clusters, led by “Brake line corrosion and loss of braking.” Chevrolet vehicles use the GM Oil Life System (OLS) — a percentage-based monitor that calculates oil life from driving conditions, not fixed mileage. When the OLS drops to 0%, oil and filter are due. The schedule below reflects GM's Normal Use intervals for everything else.

Save this car as:

No open recalls on file. NHTSA lists no unrepaired safety recalls for this year, make and model. A recall can be issued at any time, and a specific car can still have one open — check yours by VIN at nhtsa.gov/recalls.

Known issues & problems for this vehicle

What drivers and federal regulators have officially reported about the 2004 Chevrolet Blazer.

Reported to NHTSA

Brake line corrosion and loss of braking

SERVICE BRAKES

5 NHTSA complaints · 2004-06 → 2016-01

“BRAKE LINE CORRODED THROUGH AND LOST REAR BRAKES DURING STOP--DEALER UNABLE TO REPAIR PROPERLY---PART NO LONGER AVAILABLE THRU GEN MOTORS--WENT OUT DURING STOP ON HIGHWAY --NO DAMAGE TO VEHICLE OR PEOPLE--GROSELY LONGER DISTANCE TO STOP SAFELY”
— Owner report, NHTSA ODI #10818392
“AFTER REPLACING BRAKE PADS ON VEHICLE I WAS PUMPING BRAKES TO BLEED OUT AIR IN THE LINES AND THE PEDAL WENT TO THE FLOOR. UPON INSPECTION THE BRAKE LINE RUPTURED DUE TO EXCESSIVE CORROSION”
— Owner report, NHTSA ODI #10654834
“BRAKE PEDAL WENT TO FLOOR VERY SLOWLY. REPAIRED BRAKES WITH ALL NEW COMPONENTS; ROTORS, PADS, CALIPERS, NEW BRAKE FLUID”
— Owner report, NHTSA ODI #10577997

Read all complaints on NHTSA →

Ignition switch and key release failure

ELECTRICAL SYSTEM

3 NHTSA complaints · 2014-03 → 2014-07

“THE CONTACT STATED THAT THE KEY BECAME LODGED IN THE IGNITION SWITCH. THE VEHICLE WAS TAKEN TO THE DEALER”
— Owner report, NHTSA ODI #10607284
“THE PROBLEM IS WITH THE IGNITION. THE KEY DOES NOT RELEASE AFTER IT HAS BEEN TURNED TO THE OFF POSITION”
— Owner report, NHTSA ODI #10607522
“THE VEHICLE HAD TO BE TOWED, BECAUSE IT WOULD NOT START, DUE TO THE FAULTY IGNITION CYLINDER WOULD NOT TURN”
— Owner report, NHTSA ODI #10575578

Read all complaints on NHTSA →

Speedometer reading erratically

ELECTRICAL SYSTEM

3 NHTSA complaints · 2008-04 → 2009-03

“WHILE DRIVING 30 MPH, THE SPEEDOMETER DISPLAYED 110 MPH”
— Owner report, NHTSA ODI #10261415
“THE SPEEDOMETER STARTED ACTION G UP ONE DAY WHEN I WAS GOING 50MPH, THE SPEEDOMETER WENT UP TO 100MPH BY ITSELF”
— Owner report, NHTSA ODI #10254201
“WHILE DRIVING 55 MPH, THE SPEEDOMETER DIAL INDICATED THAT THE CONTACT WAS DRIVING 110 MPH”
— Owner report, NHTSA ODI #10225445

Read all complaints on NHTSA →

Driver door hinge and latch failure

STRUCTURE

3 NHTSA complaints · 2009-01 → 2014-12

“WHILE MAKING A RIGHT TURN INTO A PARKING LOT, MY DRIVER'S DOOR FLEW OPEN. NOW THE DOOR WILL NOT STAY CLOSED”
— Owner report, NHTSA ODI #10662230
“WHILE DRIVING IN THE PARKING LOT OF LOWES, THE DOOR HINGE ON DRIVERS SIDE FAILED ALONG WITH LATCH ALLOWING IT FALL OFF”
— Owner report, NHTSA ODI #10622547
“THE LEFT FRONT DOOR DROPPED ABOUT A QUARTER OF AN INCH AND THE LOCK WAS DRAGGING ON THE STRIKER PLATE ON THE DOOR JAM”
— Owner report, NHTSA ODI #10255992

Read all complaints on NHTSA →

Transmission sun gear failure in reverse

POWER TRAIN

2 NHTSA complaints · 2008-02 → 2013-12

“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”
— Owner report, NHTSA ODI #10557986
“WHEN THE GEAR WAS SHIFTED INTO REVERSE, THE VEHICLE WOULD NOT MOVE. THE DEALER STATED THAT THE FAILURE WAS CAUSED BY A FAULTY SUN GEAR”
— Owner report, NHTSA ODI #10217382

Read all complaints on NHTSA →

Front suspension and steering component wear

SUSPENSION

4 NHTSA complaints · 2004-07 → 2009-02

“2004 CHEVY BLAZER WITH 46,000 MILES ;SEVERE EROSION OF BALL JOINT WAS NOTED UPON ROUTINE STATE INSPECTION”
— Owner report, NHTSA ODI #10260162
“WHILE PERFORMING AN OIL CHANGE CONSUMER NOTICED THAT THE STEERING ARM ADJUSTING SLEEVE FOR THE TIE ROD HAD 100% SURFACE RUST”
— Owner report, NHTSA ODI #10079639
“DT: 2004 CHEVROLET BLAZER. THE CONSUMER STATES THAT THE FRONT WHEEL BEARINGS ON DRIVER'S SIDE MALFUNCTIONED”
— Owner report, NHTSA ODI #10129418

Read all complaints on NHTSA →

Engine stalling and loss of power

ENGINE AND ENGINE COOLING

3 NHTSA complaints · 2004-07 → 2006-04

“I WAS STUCK IN TRAFFIC ON AN INTERSTATE. WITHOUT WARNING MY VEHICLE SHUT OFF”
— Owner report, NHTSA ODI #10080687
“MY 2004 TRAILBLAZER HAD BEEN IN THE MAROONE SERVICE DEPT 5 TIMES DURING THE FIRST 27000 DUE TO LOSS OF POWER, ENGINE STOP ON TRAFFIC LIGHT, AND SERVICE ENGINE SOON LIGHT ON”
— Owner report, NHTSA ODI #10156083

Read all complaints on NHTSA →

Air bag deployment while parked

AIR BAGS

2 NHTSA complaints · 2018-02 → 2018-03

“WOKE UP IN MORNING AFTER STORM AND LOOKED OUT TO FIND THAT THE AIR BAG IN BLAZER HAD EXPLODED OUT”
— Owner report, NHTSA ODI #11075231
“FEB. 26 LOOK OUT DOOR IN MORNING AND AIR BAGS EXPLODED AND CAUSE ALL ELECTRIC SYSTEM TO GO OUT”
— Owner report, NHTSA ODI #11076948

Read all complaints on NHTSA →

Issues on other model years

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 20, 2026. Investigation data refreshed Sep 20, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Raw data + downloads for this vehicle →

Essential maintenance

Critical for safety and preventing major damage

Engine Oil & Filter (per Oil Life System)

Every 7,500 mi

Change oil when the Oil Life System reaches 0% or every 12 months — whichever comes first. dexos1-approved synthetic oil required on all gas engines since 2011.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

Tire Rotation

Every 7,500 mi

Rotate tires every 7,500 miles. Silverado 4x4 and Tahoe owners benefit from earlier rotations to even out drivetrain wear.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

Brake Inspection

Every 7,500 mi

Inspect brake pads, rotors, and parking brake at each tire rotation. Equinox and Malibu front pads typically last 40,000-50,000 miles.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

Brake Fluid

Every 45,000 mi

GM specifies brake fluid replacement based on contamination testing. Test every 30,000 miles; replace if moisture content exceeds 3% or fluid appears dark.

Estimated cost — typical U.S. ranges

Dealer

~$180–$200

Shop

~$125–$140

DIY

~$10–$25

DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.

Important maintenance

Keeps your vehicle running smoothly and efficiently

Engine Air Filter

Every 45,000 mi

GM long-life cellulose air filters are rated 45,000 miles. Direct-injection engines are sensitive to airflow restriction; inspect at every oil change.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

Automatic Transmission Fluid

Every 45,000 mi

Severe service (heavy towing, frequent stop-and-go, dusty conditions): replace every 45,000 miles. Normal service: 97,500 miles. Use Dexron-VI on 6L80/8L90 transmissions.

Estimated cost — typical U.S. ranges

Dealer

~$330–$500

Shop

~$235–$355

DIY

~$60–$180

Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.

Transfer Case Fluid (4WD)

Every 45,000 mi

On 4WD models, replace transfer case fluid every 45,000 miles — sooner if towing or off-roading. Use GM Auto-Trak II fluid.

Estimated cost — typical U.S. ranges

Dealer

~$105–$140

Shop

~$75–$100

DIY

~$15–$40

AWD/4WD vehicles only. Easy drain-and-fill on most platforms.

Spark Plugs

Every 100,000 mi

GM iridium spark plugs are rated 100,000 miles on most LS and LT engines. The 5.3L V8 in Silverado 1500 commonly fouls plugs early under heavy idling.

Estimated cost — typical U.S. ranges

Dealer

~$285–$390

Shop

~$200–$275

DIY

~$25–$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.

Dex-Cool Engine Coolant

Every 50,000 mi

GM Dex-Cool (orange): first change at 150,000 miles or 5 years, then every 50,000 miles. Mixing with green coolant creates a sludge that destroys the cooling system.

Estimated cost — typical U.S. ranges

Dealer

~$285–$330

Shop

~$200–$235

DIY

~$25–$60

Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.

Rear Differential Fluid

Every 50,000 mi

Silverado and Tahoe: replace rear axle fluid every 50,000 miles, or 25,000 miles if towing. Limited-slip differentials require GM friction-modifier additive.

Estimated cost — typical U.S. ranges

Dealer

~$150–$195

Shop

~$105–$135

DIY

~$20–$50

Drain plug + fill plug — straightforward DIY. AWD vehicles have two; budget for both.

Recommended maintenance

Extends the life of your vehicle and improves comfort

Cabin Air Filter

Every 22,500 mi

Replace the cabin air filter every 22,500 miles. Silverado and Tahoe owners in dusty climates should replace earlier.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

Fatal crash history & reported problems

Occupant deaths in fatal crashes (FARS)

No occupant deaths in FARS 1990–2024 crashes are on record for this year and model. That is the census answer for the window, and it says nothing more than that.

Crash years covered: 1990–2024 Older models have had more years on the road to appear in these crashes, so a higher count here does not by itself mean a vehicle is less safe.

FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number

FARS 2024 data is an annual report file. NHTSA revises these records when the final file is published, so this count can change.

Owner-reported problem signals

Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.

4

complaints mentioning a crash

0

complaints mentioning a fire

Reviewed known issues for this vehicle

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2004 Chevrolet Blazer reflects Chevrolet's published service intervals and the Oil Life System system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

Check another vehicle →