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 ↗2005 Chevrolet Trailblazer brakes problems
severe 19 complaints filed with NHTSA · avg repair $450 · see brakes across all vehicles →
Failure mileage
Complaints
19
Recalls
0
Avg fix
$450
4crashes
1fire
2injuries
What stands out
Of the 8 model years of Chevrolet Trailblazer we track for brakes problems, this one carries the most owner complaints on file — 19.
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
Nineteen owners report serious brake defects in the 2005 Trailblazer. The most severe involve sudden, complete loss of braking pressure—the pedal sinks to the floor with zero resistance during normal driving. Mechanics confirm master cylinder failure as the cause; one owner had a second failure even after replacement, witnessed by three people. Other owners describe ABS system malfunction: grinding noise, pedal sinking, inability to stop, and vehicle loss-of-control, especially on wet roads, bumpy surfaces, or railroad tracks. ABS warning lights come on intermittently or stay illuminated. Some owners report a chronically soft brake pedal that sinks further after full stops, along with excessive rotor and pad wear. One owner documents severe brake line corrosion requiring replacement of the entire system. Another reports catastrophic brake overheating that caused fire in the wheel well and under the vehicle, destroying the entire truck. Specific repairs mentioned include master cylinder replacement, ABS module replacement (at 60,000 miles), and flexible braided line replacement (at 82,000 miles). One dealer cited a TSB dated 12/23/2005 regarding flickering headlights as normal but refused to address brake issues, claiming owner driving style was at fault. A mechanic confirmed that multiple 2005 Trailblazer owners have experienced similar catastrophic brake failures.
Same Chevrolet Trailblazer brakes reports on nearby years: 2006
Failure modes owners describe
Master cylinder failure — loss of brake pressure
Brake pedal goes to the floor with no resistance; complete loss of hydraulic pressure. Owners report pump-and-hold behavior (7–10 pumps) to restore braking after failure events. Mechanics confirm master cylinder leaks.
When: Occurs without warning during normal driving; one owner reported second occurrence after first master cylinder replacement
Symptoms owners cite: Brake pedal sinks to the floor with no resistance; Complete loss of braking ability; Requires repeated pumping of pedal to restore pressure; Multiple failure events on same vehicle
Repairs/costs cited: Master cylinder replacement; one owner paid out-of-pocket at independent shop; another owner received replacement from dealer with 3 eyewitnesses to second failure
ABS system malfunction — intermittent failure and sensor faults
Anti-lock brake system fails to engage or malfunctions during braking, particularly on bumpy roads, railroad tracks, wet conditions, and low-speed stops. Grinding or slipping sounds reported. ABS warning light illuminates intermittently or stays on. Dealers diagnosed faulty ABS modules and ABS sensors.
When: Intermittent; occurs on various road conditions (bumpy roads, wet surfaces, low-speed stops, turns, on-ramps). One documented at 60,000 miles
Symptoms owners cite: Grinding noise when brakes applied; Brakes slip and pedal goes to floor; ABS warning light illuminates intermittently or continuously; Increased stopping distance; Vehicle goes out of control during braking, especially in wet conditions; Inability to slow vehicle; requires rapid reapplication of brakes
Codes mentioned: ABS warning light illumination
Repairs/costs cited: ABS module replacement documented at 60,000 miles; TSB referenced by one owner dated 12/23/2005
Recalls/TSBs owners mention: GM expanded recalls for truck and SUV brakes noted by owner (dated 12/23/2005); one owner states manufacturer advised no recall applied to this vehicle
Soft, inconsistent brake pedal — excessive travel and poor feel
Brake pedal exhibits excessive travel, soft feel, and sinking during stops. Last 25 feet of braking shows vibration and hum; pedal sinks an additional 1/2 inch at full stop. Owners report difficulty judging stopping distance and lack of confidence in emergency braking.
When: Chronic issue; owners describe ongoing problem during ownership
Symptoms owners cite: Soft, low brake pedal pressure; Excessive pedal travel; Pedal sinks an additional 1/2 inch after initial stop; Vibration and humming during final braking phase; Inconsistent pedal feel; Reduced confidence in emergency braking
Repairs/costs cited: Continuous rotor and pad replacements; dealer blamed owner driving style rather than acknowledging system fault
Recalls/TSBs owners mention: Dealer stated fault was owner's driving style (braking too hard), not a design defect; GM has done nothing to assist per owner claim
Brake fluid line corrosion and leakage
Brake lines develop severe corrosion and leak hydraulic fluid, requiring complete line replacement.
When: Unknown mileage
Symptoms owners cite: Visible corrosion on brake lines; Fluid leakage from brake lines
Repairs/costs cited: All brake lines require replacement
Brake rotor rust and pulsation
Brake rotors rust and cause pedal pulsation during braking.
When: Unknown timing
Symptoms owners cite: Brake pedal pulsates during braking; Rust accumulation on rotors
Repairs/costs cited: Rotor replacement
Flexible braided brake line failure
Flexible braided brake line fails, resulting in loss of braking ability during normal driving.
When: At 82,000 miles
Symptoms owners cite: Brakes will not stop vehicle during normal driving; Driver must use emergency brake to stop
Repairs/costs cited: Flexible braided line replacement
Recalls/TSBs owners mention: Manufacturer advised vehicle was not under recall
Brake system fire — overheated brakes and wheel fire
Brakes overheat after emergency stop on highway, causing fire inside wheel well and under vehicle. Vehicle burned down to steel frame.
When: After emergency stop on I-93 North in MA
Symptoms owners cite: Flames coming from inside right wheel well; Dripping fire from under vehicle; Smoke and flames visible from passenger side; Vehicle burns down completely to steel frame
Repairs/costs cited: Vehicle destroyed; no repair attempted
Synthesized from 19 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 2005 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 2005 Chevrolet Trailblazer?
It's a meaningful issue. 19 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 15 complaints that reported odometer mileage, most brakes failures cluster between 19,042 and 89,000 miles, with the median around 70,000. A quarter of owners report trouble before 19,042; a quarter make it past 89,000. 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/2005/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.