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 GMC Envoy brakes problems
severe 10 complaints filed with NHTSA · avg repair $450 · see brakes across all vehicles →
Failure mileage
Complaints
10
Recalls
0
Avg fix
$450
3crashes
2injuries
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
2005 GMC Envoy brake complaints cluster around five distinct failure patterns. Most common: brake pedal goes soft and spongy or travels all the way to the floor with little to no stopping power. One owner replaced the master cylinder twice between August 2005 and June 2006 with no improvement; dealership bled the brakes, blaming air in the system, but the vehicle remained unsafe for panic stops. Dealership acknowledged GM had no clear answer beyond ordering more parts.
ABS light illumination appears frequently, sometimes intermittent. One owner at 100,000 miles faced an EBCM replacement need, but the part sat on national backorder indefinitely. Another at 23,700 miles reported ABS that would not engage on bumpy roads and brakes that were completely inoperative.
One catastrophic case involved a December 2005 incident where the brake pedal failed entirely while parking; the vehicle accelerated despite a fully depressed pedal and crashed through a garage door.
A design concern surfaced: two different drivers had feet slip off the brake pedal during braking situations, resulting in collisions.
One report documented brakes locking up and causing a spinout into a guardrail. Another owner reported recurring stalling, vacuum booster and air boot failures that recurred after repair.
Failure modes owners describe
Brake Pedal Loss of Response / No Braking Power
Brake pedal goes to floor with no braking response, or pedal becomes extremely spongy and soft with inadequate stopping power. Multiple cases report inability to stop vehicle normally or during panic braking situations.
When: August 2005 onward; 2005-2006 model year owners; mileages ranging from 23,700 to 123,000 miles
Symptoms owners cite: Brake pedal travels all the way to floor; Pedal becomes excessively spongy with no stopping power; Vehicle unable to perform panic stop; Brakes unresponsive to pedal pressure; Brakes inoperative
Codes mentioned: ABS light illumination, Service brakes light illumination, EBCM failure
Repairs/costs cited: Master cylinder replaced twice in one case with no improvement; EBCM replacement needed but part on national backorder; dealership bleeding brakes to remove air did not resolve spongy pedal
Recalls/TSBs owners mention: GM advised dealership to order more parts but cause unknown; EBCM backorder issue; TSBs exist for some related failures
ABS System Failure / Intermittent Warning Light
ABS warning light illuminates on dashboard, sometimes intermittently; ABS failure to engage on bumpy roads or slipping; EBCM electronic brake control module malfunction reported.
When: Reported from 2005-2006 model year; failure mileage 100,000 miles and higher
Symptoms owners cite: ABS warning light on dashboard comes on and off intermittently; ABS does not engage on bumpy roads; ABS skips or fails to engage; Service brakes light also illuminates alongside ABS light
Codes mentioned: ABS light code, Service brakes light code, EBCM fault
Repairs/costs cited: EBCM replacement required; part on national backorder with unknown lead time; dealership cannot repair without part availability and system software update
Recalls/TSBs owners mention: EBCM part placed on national backorder; GM notified; TSBs issued for some electrical/lighting failures
Brake Pedal Ergonomic / Design Defect
Driver's foot slips off brake pedal during braking situations, causing unintended vehicle motion and collisions. Two separate drivers in same vehicle experienced this. Reported as potential design flaw in pedal size, material, or placement.
When: 2005 GMC Envoy; incidents in 2007 and July 2009
Symptoms owners cite: Foot slips off brake pedal during braking; Unintended vehicle motion when pedal slips; Vehicle collision into another parked vehicle; Recurring incidents with different drivers
Repairs/costs cited: Owner suspects wrong pedal size, material, or improper placement; no repair action documented
Brake System Lockup
Brakes locked up unexpectedly during normal driving, causing loss of vehicle control and crash into guardrail.
When: 2005 GMC Envoy; crash report filed 05/13/10
Symptoms owners cite: Brakes locked up while driving; Vehicle spun off roadway; Strike to guardrail
Complete Brake Failure with Engine Acceleration
Brake pedal did not respond to initial application; when pressed harder, vehicle continued at same speed then accelerated while pedal held fully down, resulting in vehicle crashing through garage door.
When: December 10, 2005; 2005 GMC Envoy SLT
Symptoms owners cite: Brake pedal unresponsive on initial application; Vehicle continued at same speed despite harder pedal pressure; Vehicle accelerated while brake pedal held to floor; Loud grinding noise from underside prior to brake failure; Multiple dashboard warning icons appeared; Dashboard clock reset to 12:00
Repairs/costs cited: Vehicle towed to dealership on flatbed; garage door demolished; potential fuel smell in vehicle
Synthesized from 10 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 GMC Envoy?
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 GMC Envoy?
It's a meaningful issue. 10 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 9 complaints that reported odometer mileage, most brakes failures cluster between 3,829 and 68,000 miles, with the median around 30,000. A quarter of owners report trouble before 3,829; a quarter make it past 68,000. 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/GMC/Envoy.
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.