2004 Chevrolet TrailBlazer Chevrolet TrailBlazer 2004

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2004 Chevrolet TrailBlazer repairs by problem area

Engine (38%)

Transmission and Drivetrain (10%)

Brakes and Traction Control (3%)

Suspension and Steering (24%)

Electrical and Air Conditioning (23%)

Paint, Rust, Leaks, Rattles, and Trim (0%)

Other (3%)

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Chart based on 93 repairs.
See TSBs and recalls for the 2004 Chevrolet TrailBlazer.

2004 Chevrolet TrailBlazer engine repair cost distribution

$2500+ (0%)

$1000 - $2499 (6%)

$500 - $999 (15%)

$100 - $499 (41%)

< $100 (38%)

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Chart based on 34 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2004 Chevrolet TrailBlazer

Engine not specified

57000 mi

US $172
Replaced the electric ignition switch under dash, 3rd time since we bought the TrailBlazer new 
42000 mi

US $600
Radiator fan clutch needed replacement together with water pump. Changed spark plugs at same time and flushed transmission oil 

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2004 Chevrolet TrailBlazer 4dr SUV, ext.

290-horsepower 5.3L V8 4-speed automatic RWD

65000 mi

US $502
water pump replaced 
76000 mi

US $920
replace catalytic converter 

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2004 Chevrolet TrailBlazer 4dr SUV, ext.

275-horsepower 4.2L I6 4-speed automatic RWD

256000 mi

US $1100
Failed emissions. Had to replace catalytic converter, other parts. 
121100 mi

US $400
Car acted like there was a fuel interuption/stoppage. Would simply shutdown for no reason. 

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2004 Chevrolet TrailBlazer 4dr SUV, ext.

275-horsepower 4.2L I6 4-speed automatic 4WD w/low range

136000 mi

US $360
cracked exhaust manifold replaced  also replaced spark plugs and ignition coils at this time. 
169500 mi

US $250
broken rear bolt that holds on exhaust manifold, cracked manifold, burned up gasket for rear cylinder 2nd new exhaust manifold put on in 4 years time - this chevy trailblazer is the biggest piece of crap vehicle I have ever owned.. the designers should be lynched !!! 

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2004 Chevrolet TrailBlazer 4dr SUV

275-horsepower 4.2L I6 4-speed automatic RWD

175000 mi Cuts off occasionally at a stop. 
86000 mi

US $438
Engine light came on. The temperature gauge was showing very high temperature. Mechanic showed the code to be a thermostat AND sensor malfunction. Thermostat was stuck closed. Thermostat and sensor replaced. 
86000 mi

US $89
Engine stopped running at idle. Code showed MAP sensor was bad. Replaced sensor. 

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2004 Chevrolet TrailBlazer 4dr SUV

275-horsepower 4.2L I6 4-speed automatic 4WD w/low range

209000 mi

US $550
Replaced spark plugs and coil packs and fuel pressure regulator. 
157000 mi

US $120
Engine operating temperature running below spec by 10 degrees. Replaced thermostat 
207000 mi

US $750
Serpentine belt had cracks on it 
36000 mi Camshaft position sensor 
47950 mi

US $382
Fan clutch/water pump 
59240 mi

US $107
Water pump rechanged. N/C. New belt and 60$ labor 
80000 mi

US $450
Gas smell but no apparant leak. Dealer dropped tank and replaced fuel pump/tank lines. This was done at NO COST!!! based on VIN# and a letter received from GM some years earlier stating that this failure was likely to happen. Hats off to GM Exhaust manifold cracked. Replaced w/aftermarket. 2 bolts broken in head and new O2 sensor needed. 
83000 mi

US $10
Engine idle would drop low and sometimes even stall when heater or AC was engaged. Problem was fixed by removing air intake system and cleaning the accumulated gunk from throttle body butterfly. 
131000 mi

US $250
replaced faulty fan clutch--also replaced waterpump ,belt,and belt tensioner. 
139000 mi

US $30
Fan Clutch solid state relay replaced. Fan clutch running constantly at hi speed. 
129600 mi

US $30
Replaced faulty O2 sensor. 
168000 mi

US $45
#4 cylinder coil dead 
153000 mi losing map sensor and air pump 
168020 mi

﷼300
Vibration during idle and moving. Changed the engine mounts. Problem solved 
179800 mi

﷼300
Major vibration detected and engine light blinking. Computer check showed faulty thermal sensor. Turned out a cable connecting the sensor was not working. Repair included cable, spark plugs, engine tuning. 
185380 mi

﷼1300
Engine sputter was noticed. Turned out the thermosatat not working. It was changes and engine tuning and reprogramming made. 
193820 mi

﷼210
Engine is not running smoothly. Sometimes switch off all of a sudden especially when the car is turning. 
203980 mi

﷼113
Oil leak from the pipe on top of the engine. A valve was repaired and a hose replaced. 
212040 mi

﷼253
Substantial oil leakage from the upper part of the engine. The Upper gasket was change along with spark plugs and one injector. 
214300 mi

﷼176
Timing belt was cut. It turned out the water pump was failed and it could be the reason for the belt failure. Both were replaced. 
79500 mi

US $853
Replaced Thermostat & Coolant. Front Brakes & Rotors, brake fluid replaced. Replaced engine air filter. 

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2004 Chevrolet TrailBlazer 4-door

6-cylinder automatic 2WD

50000 mi

US $50
Clamp on the gas inlet valve was loose. Had to be tightened. 

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2004 Chevrolet TrailBlazer Engine Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2004 Chevrolet TrailBlazer problems occur, check out our car reliability stats.