Owners of 2007 Cadillac CTS vehicles describe brake failures occurring primarily during slow-speed turns and parking maneuvers, typically at 5-15 mph. The most common symptom is brake pedal pulsation combined with loss of braking force—the brake pedal often travels to the floor while the vehicle continues to roll forward. Many report the ABS activates involuntarily, and some see warning lights (Service Brake Assist, ABS, traction control) on the dash, though others experience failures with no warning indicators.
A recurring pattern emerges: dealers frequently cannot duplicate the issue or identify a root cause, leaving owners frustrated after multiple service visits. Several owners have paid for repairs—replacing front hubs, electronic brake control modules, and various brake components—only to have the same failure occur days or weeks later.
Brake line corrosion and fracture is documented in multiple complaints, with failures occurring at the junction where rubber hose transitions to metal fitting, particularly where water becomes trapped. One owner's brake line separated during a right turn; another reported premature rust and corrosion at 95,000 miles; a third's line crumbled under the rubber connection. Rear brake hose erosion from contact with a sharp metal bracket is also cited.
Two owner-inflicted collisions are reported: one crashed into a brick wall after complete brake failure with steering loss; another crashed into two vehicles and a ditch when brakes failed to respond during acceleration. Emergency brakes and manual shifting into Park prevented worse outcomes in other incidents. Brake fluid reserves remained full despite failures, ruling out simple leaks in most cases.
Failure modes owners describe
Low-speed brake failure during turns and parking
Brake pedal pulsates and loses stopping force when turning at slow speeds (typically 5-15 mph), such as during parking or driveway entry. Vehicle continues to roll forward despite pedal depression. ABS engages involuntarily. Some occurrences accompanied by grinding noise.
When: Typically under 10-15 mph during right or left turns; occurs intermittently, often multiple times per week to several times per year
Symptoms owners cite: Brake pedal pulsates; Loss of braking force at low speed during turns; Vehicle continues to roll forward; ABS activates involuntarily; Grinding noise; Service Brake Assist warning light illuminates; ABS and traction control warning lights illuminated
Codes mentioned: Front wheel speed sensor electrical failure codes (implied), Electronic brake control module fault codes (implied)
Repairs/costs cited: Owners report dealers replacing front hubs, electronic brake control modules, and brake pads/rotors at costs ranging $725–$1,435. Repairs often temporary; failures recur within days or weeks.
Recalls/TSBs owners mention: Dealers unable or unwilling to replicate issue; some denied problem exists. One dealer replaced hub and EBCM without resolving root cause. GM denied warranty coverage after expiration and required owner co-pay of ~$600.
Brake line corrosion and fracture
Brake lines, made of stainless steel, corrode prematurely. Failures occur at the junction where rubber hose connects to metal fitting, particularly under rubber boots that trap water. Lines fracture or separate, resulting in brake fluid loss and complete brake failure.
When: Reported at mileage ranging 58,000 km (~36,000 miles) to 117,000 miles; one incident occurred shortly after startup at 25 mph
Symptoms owners cite: Brake pedal goes to floor; Complete brake failure; Visible corrosion and cracks on brake lines; Brake fluid leakage; Erosion of hose near fitting
Repairs/costs cited: Owners replaced brake hoses and lines on both driver and passenger sides. Mechanics confirmed lines could not be repaired and required replacement.
Recalls/TSBs owners mention: Recall 10V105000 exists for CTS-V models but not standard CTS, despite both sharing identical brake line part numbers per owner report. GM refused repair/replacement/reimbursement under recall bulletin 09149B for non-recalled vehicles. One owner's VIN was not under recall.
Brake pedal loss of responsiveness and floor-travel
Brake pedal becomes unresponsive or travels fully to the floorboard when depressed, with little to no braking effect. Owners must pump brakes repeatedly to regain stopping power or shift vehicle into Park.
When: Various speeds, including highway speeds (25 mph, approaching stop signs). Occurs intermittently but with increasing frequency; one owner reported recurrence over 3+ years (2015–2018)
Symptoms owners cite: Brake pedal travels to floorboard; Minimal or no braking response; Increased stopping distance; Requires repeated pumping of brake pedal to stop; Hard brake pedal in one case; Air leaking sound (one report)
Codes mentioned: No warning light in some cases, Brake problem indicated on Driver Information Center (one report)
Repairs/costs cited: One owner paid $1,000 for dealer repair; problem persisted. Multiple dealers unable to diagnose cause despite five or more service visits in one case. Master brake cylinder replaced in at least one instance.
Recalls/TSBs owners mention: Manufacturer did not assist. Dealers unable to diagnose; one refused to work without payment.
Premature brake pad and rotor wear
Brake pads and rotors exhibit excessive wear and rust at low mileage. Pads completely worn out and rotors damaged beyond repair at 28,000–30,000 miles.
When: At 27,000–30,000 miles; one owner required replacement again by 52,000 miles after prior replacement at 30,000 miles
Symptoms owners cite: Pads and rotors rusted; Pads completely worn out; Rotors damaged beyond repair; Unusual noise heard during braking
Repairs/costs cited: Brake pads and rotors replaced; master brake cylinder also found faulty in one case. One owner required second pad/rotor replacement within approximately 22,000 miles of first replacement.
Brake hose erosion from design flaw
Rear brake hose comes into contact with a sharp edge of a metal bracket, causing erosion and wear. At lower mileages, the hose approaches perforation risk.
When: Erosion detected at approximately 58,000 km (~36,000 miles); owner notes older cars likely already perforated
Symptoms owners cite: Physical contact between hose and sharp metal bracket; Erosion/wear on hose; Brake fluid leakage
Repairs/costs cited: Rear brake hose replaced on both sides.
Recalls/TSBs owners mention: No recall for rear brake hose despite previous recall for front brake hoses. Owner plans to request warranty replacement from GM.
Intermittent brake system loss with no warning indicator
Brakes fail intermittently with no illuminated warning lights on the instrument panel. One incident involved approximately 90% brake loss with hard brake pedal and audible air leak.
When: Occurred 5–6 times within 6-week period at early mileage (~5,630 miles)
Symptoms owners cite: Hard brake pedal; Audible air leaking; 90% brake loss; No warning lights illuminated; Recovered to normal braking after reapplication of brake pressure
Repairs/costs cited: Dealership inspection found nothing wrong; service report only noted low brake pads, failing to document actual symptoms.
Synthesized from 42 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.