2021 Chevrolet Trailblazer
KL79MPSL4NB043065
Vehicle record for the 2021 Chevrolet Trailblazer (VIN KL79MPSL4NB043065). Gray, wagon / suv, gasoline. Registered in Rivne. 4 NHTSA recall campaigns for this model year. Free specifications, registration region and recall data.
Full vehicle history report
What a full report checks for VIN KL79MPSL4NB043065
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.
History reports cover US-titled vehicles only. This car is registered in Ukraine, so title, salvage and odometer records from the US national title database (NMVTIS) don't apply to it. The registration record, specifications and recall data on this page are free.
At a glance
Vehicle identity & specifications
🧾 Window sticker / build sheet → All 2021 Chevrolet Trailblazer data →
What's a 2021 Chevrolet Trailblazer worth?
What comparable 2021 Chevrolet Trailblazer vehicles are listed for — a quick gut-check before you negotiate.
Is the seller's price fair? Get this exact VIN's current market value — retail, trade-in & loan value — in the full report.
See this car's exact value →MPG & running costs
U.S. EPA fuel-economy estimates for the 2021 Chevrolet Trailblazer.
Source: U.S. EPA / DOE fueleconomy.gov. The EPA lists 3 versions of this model year; combined is shown as a range and the other figures are averages. Actual mileage varies with trim and driving conditions.
Crash-test safety ratings
NHTSA 5-Star Safety Ratings for the 2021 Chevrolet Trailblazer.
Rollover risk: 18.5% — NHTSA's estimated chance of rollover in a single-vehicle crash (dynamic test: no tip).
Source: NHTSA New Car Assessment Program, tested as the 2021 Chevrolet Trailblazer SUV FWD Later Release. Ratings can differ by body style and drivetrain.
Estimated 5-year cost to own
A rough guide to what running a 2021 Chevrolet Trailblazer 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.
Dimensions & weight
Manufacturer-reported figures for the 2021 Chevrolet Trailblazer — ranges cover the 3 body / drivetrain versions on record. Source: Transport Canada vehicle specifications via NHTSA.
Investigations & service bulletins
Manufacturer service bulletins 754
Technical notes the manufacturer sent to dealers about known issues and fixes. Useful to mention to a mechanic — they are not recalls and repairs may not be free. Showing the 10 most recent of 754.
This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
Bulletin PIT5698F · Sep 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
Bulletin PIP4902W · Sep 2026This Preliminary Information provides the dealer information of the location of the rear seat child anchors.
Bulletin PIT5995B · Sep 2026This Preliminary Information provides a diagnostic tip for diagnosing an issue with Cruise Control, Adaptive Cruise and Lane Keep Assist Turns Off or Inoperative.
Bulletin PIT6196A · Aug 2026This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
Bulletin PIC6551C · Aug 2026This Preliminary information communicates to the techicians a diagnostic tip if a customer has a complaint of a whistle/wind noise at highway speeds.
Bulletin PIC6589B · Jul 2026This Preliminary information communicates to the technician the direction needed when encountering an issue with switching between adaptive cruise control and regular cruise control or an issue with automatic high beam feature after the front camera was replac…
Bulletin PIC6548B · Jul 2026PI to help diagnose A/C concern
Bulletin PIT5099J · Jul 2026This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
Bulletin PIT5966F · Jun 2026PIP6032B provides diagnostic direction for dealers when encountering transmission leaks
Bulletin PIP6032C · Jun 2026Source: NHTSA Office of Defects Investigation, listed for the TRAILBLAZER AWD. Model-year data, not specific to one car.
Canadian recalls 2
Transport Canada recall campaigns for the 2021 Chevrolet Trailblazer. Relevant if the car was first sold in, or imported from, Canada.
Accessories
Issue: On certain vehicles, the emergency spare tire jack could break if it is not properly positioned under the vehicle. If this happens, the jack could collapse and the vehicle could fall suddenly. Safety Risk: A jack that collapses could trap or injure a person who is near or under the vehicle. Corrective Action: General Motors will contact owners by mail and instruct you to…
Transport Canada #2021365 · Jun 2021Brakes
Issue: On certain vehicles, a sensor in the electronic brake boost system may have a bad connection. Under certain driving conditions, this could cause a loss of brake assist. If this happens, there would be a sudden increase in brake pedal force required to slow or stop the vehicle. Safety Risk: Reduced brake performance can cause extended stopping distances and increase the r…
Transport Canada #2020452 · Sep 2020Source: Transport Canada Motor Vehicle Safety Recalls Database.
About the Chevrolet Trailblazer
The Chevrolet Trailblazer is an automobile nameplate used by General Motors for its Chevrolet brand since 1999 for several SUV models:TrailBlazer, a name of appearance package for the Chevrolet S-10 Blazer used between 1999 and 2002 Chevrolet Trailblazer, a mid-size SUV produced since 2001 as the successor to the S-10 Blazer Chevrolet Trailblazer, a subcompact crossover produced since 2020
From Wikipedia, licensed CC BY-SA 4.0. Describes the model line in general, not this model year specifically.
Safety recall campaigns 4
EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT:STAND
General Motors, LLC. (GM) is recalling certain 2020-2022 Buick Encore GX and 2021-2022 Chevrolet Trailblazer vehicles. The emergency jack, if not positioned as directed in the vehicle owner's manual, can fracture while in use.
Remedy: Dealers will replace the jack, free of charge. Interim owner notification letters informing owner of the safety risk are expected to be mailed July 26, 2021. A second notice will be mailed once remedy parts become available. Owners may contact Buick customer service at 1-800-521-7300 or Chevrolet cu
NHTSA Campaign #21V440000 · manufacturer #A212335470 · 10/06/2021SERVICE BRAKES
General Motors LLC (GM) is recalling certain 2020 Chevrolet Corvette and Cadillac CT4, CT5 and XT4, 2021 Chevrolet Trailblazer, and 2020-2021 Buick Encore GX vehicles. Sensor connection contamination in the electronic brake boost system may cause an interruption of communication between the sensor and the brake boost system.
Remedy: GM will notify owners, and dealers will replace the electronic brake boost module, free of charge. The recall began December 9, 2020. Owners may contact Chevrolet customer service at 1-800-630-2438, Cadillac customer service at 1-800-333-4223, or Buick customer service at 1-800-521-7300. GM's number
NHTSA Campaign #20V588000 · manufacturer #A202307260 · 24/09/2020SEATS:CRITICAL FASTENERS
General Motors LLC (GM) is recalling certain 2020 Buick Encore GX and 2021 Chevrolet Trailblazer vehicles. The rear attachment bolts of one or both front seats may not have been installed.
Remedy: GM will notify owners, and dealers will inspect seat attachments for both front seats and install attachment bolts as needed, free of charge. The recall began October 1, 2020. Owners may contact Chevrolet customer service at 1-800-630-2438 or Buick customer service at 1-800-521-7300. GM's number for
NHTSA Campaign #20V537000 · manufacturer #A202304380 · 03/09/2020EQUIPMENT:OTHER:LABELS
General Motors LLC (GM) is recalling certain 2021 Chevrolet Trailblazer vehicles factory-equipped with optional 17-inch sport terrain tires. The certification label on these vehicles does not provide the tire size and cold tire pressure information for front and rear tires, as required. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard Number 110, "Tire Selection an…
Remedy: GM will notify owners, and will mail corrected labels for customers to apply, free of charge. The recall began July 1, 2020. Owners may call Chevrolet customer service at 1-800-222-1020. GM's number for this recall is A202304070.
NHTSA Campaign #20V295000 · manufacturer #A202304070 · 21/05/2020Note: recall data comes from the U.S. NHTSA and covers the US-market version of this model. A car registered in Ukraine may have different campaigns — check with the manufacturer's local importer.
These are NHTSA recall campaigns for this model year, last checked 7 Oct 2026. 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
Based on all 193 owner complaints filed with NHTSA for the 2021 Chevrolet Trailblazer, here are the most-reported problem areas — and what to check before you buy.
💥 7 involved a crash 🔥 3 involved a fire 🚑 5 reported injuries
🔍 Test every electrical feature: windows, locks, infotainment, charging and all lights. Watch for flickering, dead accessories or warning lights.
🔍 Drive through every gear: watch for slipping, hard or delayed shifts, and shudder. Check for transmission/driveline leaks and noises.
🔍 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.
🔍 Brakes should feel firm and quiet — no grinding, pulsing or pulling. Check for an ABS light and uneven pad/rotor wear.
🔍 Check for fuel or battery warnings, hard starts and stalling. On a hybrid/EV, confirm charging and range behave normally.
🔍 Have a trusted mechanic inspect this system as part of a pre-purchase inspection.
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 193
Complaints filed with NHTSA by owners of the 2021 Chevrolet Trailblazer.
UNKNOWN OR OTHER
2021 Chevy Trailblazer has a shift to park sensor issue. Car is in park and the sensor does not recognize that it is in park and displays a safety message to place car in park and continues to beep. Takes numerous attempts of taking car out of park and back into park to get it to recognize that the shifter is now in park. Has taken up to 15 minutes. Deal…
NHTSA ODI #11764456POWER TRAIN,ELECTRICAL SYSTEM,ENGINE
Dear Chevy, I am reaching out to you again because I am desperately requesting immediate assistance with my vehicle, which has now become an extremely serious and dangerous safety concern. On Friday, [XXX], I had my vehicle towed to the dealership because of the ongoing mechanical issues I have been experiencing. I was advised that the repairs would cost 8…
NHTSA ODI #11762612POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM
Original Owner of 2021 Chevy Trailblazer LT. Purchased new in April 2021. Vehicle has a history of major powertrain issues, starting with Check Engine light during its first year of ownership, culminating in a complete turbocharger replacement in December 2025. This only as a result of my research, after many visits to dealership trying to diagnose the issu…
NHTSA ODI #11761820ELECTRICAL SYSTEM
Shifter
NHTSA ODI #11757775ENGINE
My timing belt snapped prematurely, causing a total loss of engine power while driving on the highway, which is a severe safety hazard
NHTSA ODI #11754543ELECTRICAL SYSTEM
I am submitting this report regarding my 2021 Chevrolet Trailblazer because it has been experiencing the "Shift to Park" issue described in the GM bulletin 19-NA-206. Even when the vehicle is shifted into Park, it intermittently displays a "Shift to Park" message and does not recognize that the transmission is in Park. This issue has been ongoing and has no…
NHTSA ODI #11754013POWER TRAIN
"shift to park" issue on a 21 traiblazer causing your car to not being able to shutdown entirely meanwhile the shift is perfectly on Park.
NHTSA ODI #11753767UNKNOWN OR OTHER
Vehicle displays Shift to Park when vehicle is in park & you push the ignition button & audible chime occurs. Apparently this is a known issue for Chevrolet Trailblazers & Buick Encore GX vehicles model year 2021 & newer. You have to either wiggle the gear shifter several times & depress/wiggle the shift lever button in order to turn off the vehicle. Sometim…
NHTSA ODI #11752759+ 185 more complaints on record.
