2003 Chevrolet trailblazer ext
1GNET16S236207770
Vehicle history report for the 2003 Chevrolet trailblazer ext (VIN 1GNET16S236207770). Grey, sport utility vehicle [suv]/multipurpose vehicle [mpv], 4.2L 6-cyl, gasoline. Title: Clean. 108,667 mi reported. Registered in Ia. 3 NHTSA recall campaigns for this model year. Unlock full title, salvage, li
![2003 Chevrolet trailblazer ext, Grey, Sport Utility Vehicle [SUV]/Multipurpose Vehicle [MPV] — representative vehicle photo for VIN 1GNET16S236207770](https://upload.wikimedia.org/wikipedia/commons/6/6f/%2703-%2704_Chevrolet_TrailBlazer_EXT_LT.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original)
At a glance
Vehicle identity & specifications
🧾 Window sticker / build sheet → All 2003 Chevrolet trailblazer ext data →
MPG & running costs
U.S. EPA fuel-economy estimates for the 2003 Chevrolet trailblazer ext with this engine.
Source: U.S. EPA / DOE fueleconomy.gov. The EPA lists 2 versions with this engine; combined is shown as a range and the other figures are averages. Actual mileage varies with trim and driving conditions.
Estimated 5-year cost to own
A rough guide to what running a 2003 Chevrolet trailblazer ext costs over five years and 75,000 miles.
How this is estimated: fuel is the U.S. EPA annual cost at 15,000 miles a year. There aren't enough comparable listings to estimate depreciation for this model, so it is left out. Not included: insurance, maintenance, repairs, taxes, registration and finance costs. Treat it as a comparison guide, not a quote.
Full vehicle history report
What a full report checks for VIN 1GNET16S236207770
A full report searches national title databases (NMVTIS) and licensed history providers for this VIN and shows whatever records are on file — not every vehicle has every record type. The decode, safety recalls and owner complaints above are always free.
Safety recall campaigns 3
LATCHES/LOCKS/LINKAGES:DOORS:LATCH
CERTAIN SPORT UTILITY VEHICLES HAVE A REAR SIDE CLOSURE LATCH THAT MAY NOT LATCH OR UNLATCH DUE TO CORROSION CAUSED BY ROAD SPLASH, SUCH AS WATER AND ROAD SALT. THESE VEHICLES WERE ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE FOLLOWING STATES: CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, O…
Remedy: DEALERS WILL INSTALL A SEAL ALONG THE LOWER PART OF THE ROCKER PANEL TO PREVENT INTRUSION OF CORROSIVE MATERIAL, AND INSPECT THE REAR SIDE CLOSURE LATCHES. FUNCTIONAL LATCHES WILL BE CLEANED AND LUBRICATED. NON-FUNCTIONING LATCHES WILL BE REPLACED. THE RECALL BEGAN ON FEBRUARY 24, 2006. OWNERS M
NHTSA Campaign #05V494000 · 27/10/2005EXTERIOR LIGHTING:BRAKE LIGHTS
ON CERTAIN SPORT UTILITY VEHICLES, VIBRATION AND HEAT MAY CAUSE THE TAIL LAMP/STOP LAMP BULB TO LOOSEN IN ITS SOCKET. IF THIS OCCURS, THE BULB MAY FLICKER AND EVENTUALLY BECOME INOPERATIVE.
Remedy: DEALERS WILL INSPECT THE TAIL LAMP/STOP LAMP ASSEMBLIES, AND IF NECESSARY, REPLACE THEM. THE RECALL BEGAN ON NOVEMBER 22, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438, OLDSMOBILE AT 1-800-630-6537, BUICK AT 1-866-608-8080, OR GMC AT 1-866-996-9463.
NHTSA Campaign #04V527000 · 01/11/2004VISIBILITY:WINDSHIELD WIPER/WASHER
CERTAIN SPORT UTILITY VEHICLES HAVE WINDSHIELD WIPER SYSTEMS THAT WILL NOT TURN ON, CEASE OPERATION WHILE IN USE, FAIL TO TURN OFF/ON BY THEMSELVES (MOISTURE SENSITIVE WIPER SYSTEM), OR HAVE CONTINUOUS WINDSHIELD WASHER PUMP OPERATION BECAUSE THE PRESENCE OF WATER WITHIN THE WIPER MODULES CAN EITHER CAUSE A SHORT CIRCUIT OR CAN LEAD TO THE CORROSION OF COMPONENTS WITHIN THE MODULE.
Remedy: DEALERS WILL COVER THE WINDSHIELD WIPER MODULE VENT HOLE WITH A PATCH. ALSO, THE WIPER MOTOR, CIRCUIT BOARD, AND ELECTRICAL CONNECTOR WILL BE INSPECTED TO SIGNS OF WATER INTRUSION AND/OR CORROSION AND BE REPLACED AS REQUIRED. THE RECALL BEGAN JULY 6, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-
NHTSA Campaign #04V046000 · 04/02/2004These are NHTSA recall campaigns for this model year. They don't show whether this particular car has had the repair done — check this VIN on NHTSA.gov or ask a franchised dealer. Recall repairs are free.
We'll email you the moment a new safety recall is issued — no spam, unsubscribe any time.
Common problems & what to inspect
Owners have filed 1,255 complaints with NHTSA about the 2003 Chevrolet trailblazer ext. The breakdown below is from a sample of the 15 most recent, so the counts are not totals.
🔥 3 involved a fire
🔍 Check for fuel or battery warnings, hard starts and stalling. On a hybrid/EV, confirm charging and range behave normally.
🔍 Test every electrical feature: windows, locks, infotainment, charging and all lights. Watch for flickering, dead accessories or warning lights.
🔍 Brakes should feel firm and quiet — no grinding, pulsing or pulling. Check for an ABS light and uneven pad/rotor wear.
🔍 Listen for clunks over bumps, check the car sits level, and look for uneven tire wear and worn shocks or struts.
🔍 Have a trusted mechanic inspect this system as part of a pre-purchase inspection.
🔍 Listen for knocks or ticking, check for leaks and blue/white exhaust smoke, and make sure it doesn't overheat. No check-engine light should be on.
Pre-purchase checklist
- Match the VIN on the dash, door jamb and title — they must be identical.
- Cold-start the engine; listen for knocks and check for blue or white exhaust smoke.
- Test-drive through all gears at low and highway speed — no slipping, shudder or pulling.
- Confirm every warning light clears at startup (none should stay on).
- Check fluids — oil, coolant, transmission — for level, color and leaks.
- Look underneath for rust, fresh undercoating or signs of collision repair.
- Always get an independent pre-purchase inspection from a trusted mechanic.
Owner complaints 1255
Complaints filed with NHTSA by owners of the 2003 Chevrolet trailblazer ext.
ELECTRICAL SYSTEM,SERVICE BRAKES,ENGINE
Transmission doesn’t have 3rd or 4th gear. Vehicle was smoking under hood. Found out after buying it it has flood damage. Mechanic said there was water in the transmission when inspected. Vehicle needs catylic converter sensor and vehicle has bad ground wire. Seller didn’t inform me of any of these issues and he said it was in good shape and very reliable.
NHTSA ODI #11509655POWER TRAIN
While driving my Trailblazer in A4WD on slippery road conditions, I went to pulled out of a parking lot and there was a loud sound like my whole front end fell out and the front end completely locked up. Almost causing an accident. I had to dial back to 2HI quickly to unlock to front end. There was no light indicating any problems. Been driving it 2HI since …
NHTSA ODI #11447243ELECTRICAL SYSTEM,EXTERIOR LIGHTING,SERVICE BRAKES
WIRE HARNESS COATING FALLING APART ALMOST CAUGHT MY TRUCK ON FIRE GOT PICTURES AND IT TRIGGERS THE BRAKE LIGHT TO STAY ON
Fire · NHTSA ODI #11403182SUSPENSION,STRUCTURE
SEE ATTACHED COMPLAINT TO GENERAL MOTORS. I HAVE ADDITIONAL DOCUMENTS WHERE OTHERS HAVE HAD THE SAME PROBLEMS WITH THERE SIMILAR YEAR TRAILBLAZERS.
NHTSA ODI #11390901FUEL/PROPULSION SYSTEM
IT'S LEAKING GAS FROM LINES ON TOP OF GAS TANK MECHANIC CHECK IT OUT I JUST CAN'T AFFORD IT I'M DISABLED ON FIXED INCOME RAISING MY GRANDSON
NHTSA ODI #11377812FUEL/PROPULSION SYSTEM
IN 2018 WE WERE HAVING A FUEL PRESSURE ISSUE AND DISCOVERED THAT THE ICV HAD CRACKED AROUND THE GAS TANK. WHEN I RESEARCHED THE ISSUE I FOUND THERE WAS A SPECIAL COVERAGE WARRANTY FOR THE ISSUE AND CALLED THE NEAREST CHEVY DEALERSHIP. THEY TOLD ME THAT THE COVERAGE HAD EXPIRED A MONTH EARLIER AND THEY WOULDN'T HONOR THE COVERAGE BUT IF WE WANTED THE CAR FIX…
NHTSA ODI #11324245SEATS,FUEL/PROPULSION SYSTEM
MY DRIVER SEAT CAUGHT FIRE WENT TO OPEN THE DOOR TO FIND A HOLE IN MY DRIVER SEAT AND THE ROOF TOP BURNT AS WELL. I ALSO HAD A NEW FUEL PUMP PUT IN DUE TO IT LEAKING GAS AFTER PUT IT. IT CONTINUES TO LEAK.
Fire · NHTSA ODI #11322762SUSPENSION,SEATS
FRAME FAILED DRIVER'S SIDE REAR. CAUSING UNSAFE DRIVE CONDITION. FORWARD TO REVERSE GRINDING CAUSED BY SEPARATION OF FRAME.
NHTSA ODI #11321041+ 1247 more complaints on record.
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Frequently asked questions
Can I find out who owns this vehicle from the VIN?
No — and no legitimate service can. Linking a VIN or plate to a named owner is restricted by the U.S. Driver's Privacy Protection Act, the EU GDPR and equivalent laws. CarLogs shows the vehicle only — specs, recalls, problems and value — never the person.
Is the VIN 1GNET16S236207770 valid?
1GNET16S236207770 is a structurally valid 17-character VIN with a correct ISO 3779 check digit, assigned to a manufacturer in United States. It decodes to the 2003 Chevrolet trailblazer ext.
Are there safety recalls on the 2003 Chevrolet trailblazer ext?
NHTSA lists 3 recall campaigns for the 2003 Chevrolet trailblazer ext model year. That covers the model year, not this individual car: to see whether a specific vehicle still needs a recall repair, check its VIN on NHTSA.gov or ask a franchised dealer. Recall repairs are free.
What fuel economy does the 2003 Chevrolet trailblazer ext get?
The 2003 Chevrolet trailblazer ext has U.S. EPA estimates of 15–16 mpg combined, depending on engine and trim (2 versions).
Sources: NHTSA (recalls & complaints), U.S. EPA (fuel economy), NHTSA vPIC (specifications). Vehicle data only — CarLogs never shows owner information.