The Used Car Index

2001 Chevrolet Trailblazer problems

NHTSA lists 20 complaints for the 2001 Chevrolet Trailblazer, 2 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.

Data build 2026-10-09.

NHTSA lists this vehicle as CHEVROLET TRAILBLAZER.

At a glance

Complaints
20
With crash
2
With fire
0
With injury (complaints)
0
Injuries
0
Deaths
0
Recalls
0
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
Unavailable
Investigations
0
Open investigations
0
Manufacturer communications
80

Complaints per 100k sold unavailable. No sales source is available for this record.

Where the complaints are

Top systems
SystemComplaintsShare of this vehicle's complaints
ENGINE AND ENGINE COOLING525.0%
POWER TRAIN525.0%
EXTERIOR LIGHTING315.0%
SERVICE BRAKES, HYDRAULIC315.0%
STRUCTURE315.0%
AIR BAGS210.0%
ELECTRICAL SYSTEM210.0%
EQUIPMENT210.0%
PARKING BRAKE15.0%
SERVICE BRAKES15.0%
Top subsystems
SystemSubsystemComplaints
POWER TRAINAUTOMATIC TRANSMISSION3
AIR BAGSFRONTAL2
ENGINE AND ENGINE COOLINGENGINE2
EXTERIOR LIGHTINGBRAKE LIGHTS2
SERVICE BRAKES, HYDRAULICANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP2
STRUCTUREBODY2
ELECTRICAL SYSTEM12V/24V/48V BATTERY1
ENGINE AND ENGINE COOLINGEXHAUST SYSTEM1
EQUIPMENTAPPLIANCE1

One complaint can name several systems, so shares can add to more than 100 percent.

Model-generated complaint tags: This model year has not been tagged.

Recalls

See new recalls and investigations this week.

0 recalls.

Investigations

0 investigations; 0 open.

Manufacturer communications

80 manufacturer communications.

Communications by system
SystemCount
EQUIPMENT35
ENGINE AND ENGINE COOLING16
ELECTRICAL SYSTEM13
POWER TRAIN6
WHEELS6
EQUIPMENT ADAPTIVE/MOBILITY5
EXTERIOR LIGHTING4
ENGINE3

11020816

Date: 2025-07-18. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.

11006621

Date: 2024-08-26. Type: Service Campaign. Systems: ELECTRICAL SYSTEM.

Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is com

11006421

Date: 2024-07-24. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.

GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions durin

11004761

Date: 2024-06-28. Type: Service Bulletin/Repair Instructions. Systems: ENGINE, FUEL/PROPULSION SYSTEM.

This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.

11004557

Date: 2024-06-17. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.

11002312

Date: 2024-06-06. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.

10251887

Date: 2024-03-14. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.

This bulletin advises the technician of possible location of an internal coolant leak from a specific cylinder head and location.

10251890

Date: 2024-03-13. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.

This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.

10250775

Date: 2024-02-22. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.

This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.

10249590

Date: 2024-01-16. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.

This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.

Notes on this record

  • Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
  • System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
  • Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
  • A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.

Other names NHTSA uses

None listed.

Matched NHTSA models

Matched labels and complaints
NHTSA model labelComplaints
TRAILBLAZER20

Same model, other years

All model years | All Chevrolet models

Other Chevrolet models, 2001

Sources

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