This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
full bulletin at NHTSA ↗2006 Chevrolet Trailblazer brakes problems
severe 16 complaints filed with NHTSA · avg repair $450 · see brakes across all vehicles →
Failure mileage
Complaints
16
Recalls
0
Avg fix
$450
3crashes
2injuries
What stands out
Among the 8 model years of Chevrolet Trailblazer in our records for brakes problems, this one ranks #3 by owner-complaint volume.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering brakes on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
full bulletin at NHTSA ↗This informational bulletin provides technicians with a brake lathe calibration procedure.
full bulletin at NHTSA ↗This informational bulletin provides technicians with a brake lathe calibration procedure.
full bulletin at NHTSA ↗This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0442. Technician will need to review Techlink article from May 2013 titled "Using the Evaporative Emissions System Tester" Technician will need to follow these steps to help diagnose the issue. First after the P0442 has been verified do not disturb any of the fuel system components. The technician now can use the scan tool to close the Evaporative Emissions System. If possible change the tank pressure sensor units from inch_H2O to milimeter_Hg for better resolution. Now the vehicle can be star
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of the 2006 Trailblazer describe brake failures across multiple failure modes. Several report the brake pedal going soft or completely to the floor with no stopping power, sometimes accompanied by popping sounds and pedal vibration. One owner was unable to stop at 35 mph and rear-ended another vehicle; a second owner experienced three separate brake failures resulting in three collisions. A third owner reports needing to pump the brake pedal repeatedly to stop and had the master cylinder replaced four times without resolving the problem.
Grinding noises occur intermittently with hard pedal feel and difficulty moving the truck from a stop; one owner's vehicle made such severe grinding that they feared the undercarriage would fall off. Owners also report brakes locking up unexpectedly and continuing to apply harder even after releasing the pedal. One case involved brakes engaging on their own at speed and another where traction control light illumination preceded unexpected brake engagement—the dealer replaced the YAW sensor without fixing it.
Electrical issues compound the problem: headlights flicker, door buttons fail, and traction control lights come on. One owner discovered that prolonged electrical failures can result in brake pedal dropping to the floor. A separate case involved battery indicator light preceding complete brake failure; the alternator had failed. Brake system fittings also leak in some vehicles. Dealers inspected and performed repairs but in several cases could not identify the root cause or refused warranty coverage.
Same Chevrolet Trailblazer brakes reports on nearby years: 2005
Failure modes owners describe
Brake pedal loss of pressure or sudden softness
Brake pedal travels to the floorboard with no stopping power or becomes unresponsive, sometimes accompanied by popping or vibration. Owners report the vehicle does not stop when the brake pedal is depressed.
When: Various mileages from 33,900 to 123,000 miles
Symptoms owners cite: Brake pedal travels to floorboard; Popping sound from brake pedal; Brake pedal vibrates; Vehicle will not stop despite brake application; Hard to move truck from stop; Requires pumping brake pedal repeatedly to achieve stopping
Codes mentioned: ABS light illumination
Repairs/costs cited: Master cylinder replaced multiple times (one owner reports 4 replacements); new rotors and brake pads installed; dealer unable to diagnose cause in some cases
Recalls/TSBs owners mention: One owner stated GM said vehicle was out of warranty and owner would have to pay for diagnosis; another owner reports GM offered no assistance with fuel gauge and brake fittings.
Brake grinding and hard pedal feel
Intermittent grinding noise from brakes with hard, resistant brake pedal feel and difficulty moving the truck. Noise sometimes described as if the bottom of the truck is falling off.
When: Intermittent; reported around 70,000+ miles
Symptoms owners cite: Loud grinding noise when braking; Brake pedal is hard and resistant when depressed; Vehicle difficult to move from stop; ABS and engine lights illuminate then clear; Grinding persists intermittently over several days
Codes mentioned: ABS light, Brake light, Engine light
Repairs/costs cited: Inspection at dealership (during unrelated window sensor recall) noted new rotors and new brake pads installed; no cause identified for intermittent grinding
Brakes lock up unexpectedly
Brakes engage on their own, lock up, and continue to apply harder even after the pedal is released. Vehicle must be shut off and restarted to release brakes.
When: 33,900 miles (one incident); 60 mph during failure
Symptoms owners cite: Brakes activate on their own; Brakes lock up completely; Brakes apply harder even after foot is removed from pedal; Vehicle comes to unintended stop; ABS light may illuminate
Codes mentioned: ABS light, Stability light illumination
Repairs/costs cited: Alternator and battery replaced in one case after alternator failure caused brake power loss; YAW sensor replaced in another case without resolving unexpected brake engagement
Brake system fluid leakage
Fittings in the brake system leak fluid, typically discovered during routine inspection or service.
When: Around 74,000 to 77,000 miles
Symptoms owners cite: Visible leaking at brake system fittings
Repairs/costs cited: Brake system fittings replaced
Recalls/TSBs owners mention: Owner told by dealer they would be responsible for all repairs; manufacturer offered no assistance
Engine stalling with electrical system issues
Engine stalls while driving, often preceded by flickering lights, traction control light illumination, and door button failures. Restarting the vehicle briefly resolves the issue until it recurs.
When: Various speeds and mileages; one case at 12,000 miles; another at 162,000 miles
Symptoms owners cite: Headlights flicker; Traction control light comes on; Door buttons stop working; Engine stalls; Check engine light flashes; Vehicle will not restart immediately; Battery indicator illuminates before brake failure
Codes mentioned: Check engine light, Traction control light, Battery indicator light
Repairs/costs cited: Engine cleaned; failed seal replaced (one case); one owner reports seal failure caused water and orange sludge buildup
Vehicle tries to accelerate while stopped at brake
Vehicle revs and attempts to accelerate even when brake pedal is fully depressed at a stop light, requiring increased brake pressure to hold vehicle in place.
When: At stop lights
Symptoms owners cite: Engine revs up while braking; Vehicle attempts to accelerate despite brake application; Requires harder brake pressure to keep vehicle from moving
Synthesized from 16 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had brakes trouble with your 2006 Chevrolet Trailblazer?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the brakes problem on the 2006 Chevrolet Trailblazer?
It's a meaningful issue. 16 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $450.
At what mileage does the brakes typically fail?
Across the 13 complaints that reported odometer mileage, most brakes failures cluster between 50,000 and 123,000 miles, with the median around 70,000. A quarter of owners report trouble before 50,000; a quarter make it past 123,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $450 for brakes repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to brakes?
No active recalls currently cover brakes issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2006/Chevrolet/Trailblazer.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.