"How reliable is the 2011 Chevrolet Avalanche 1500?"

"Based on 43 NHTSA complaints, the 2011 Chevrolet Avalanche 1500 has a median complaint mileage of 50000 miles. The most common issue is AIR BAGS."

"What are common problems with the 2011 Chevrolet Avalanche 1500?"

"The most frequently reported component in NHTSA complaints for the 2011 Chevrolet Avalanche 1500 is AIR BAGS, accounting for a significant portion of the 43 total complaints filed."

2011 Chevrolet Avalanche 1500: Reliability Data

Source: NHTSA — 43 complaints

Total Complaints

50,000mi

Median Mileage

AIR BAGS

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

34,256 25th Percentile

50,000 Median Mileage

80,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

AIR BAGS

UNKNOWN OR OTHER

ELECTRICAL SYSTEM

STRUCTURE:BODY

ENGINE

ELECTRONIC STABILITY CONTROL (ESC)

POWER TRAIN

VEHICLE SPEED CONTROL

SERVICE BRAKES, HYDRAULIC

ENGINE AND ENGINE COOLING

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"2002 CHEVY AVALANCHE - PROBLEMS WITH ABS BRAKES, TRUCK WON'T STOP AS DESCRIBED IN NHTSA ACTION # PE05020, CALLED THE LOCAL DEALER WHERE I PURCHASED NEW IN 2002. I WAS TOLD THE RECALL IS VIN # SPECIFIC, HOWEVER THE NHTSA ACTION DESCRIBES THE RECALL AS STATE SPECIFIC( I RESIDE IN AURORA, OHIO-SOUTHEAS..."

"TL* THE CONTACT OWNS A 2011 CHEVROLET AVALANCHE 1500. THE CONTACT STATED WHEN HE APPLIED THE E BRAKE, THE VEHICLE SUDDENLY ACCELERATED WITHOUT WARNING. THE CONTACT MENTIONED THAT HE WAS ABLE TO MAINTAIN CONTROL OF THE VEHICLE BY SHIFTING INTO NEUTRAL AND SHUTTING OFF THE IGNITION. THE VEHICLE WAS TA..."

"REDUCED ENGINE POWER , ENGINE DIES NO POWER STEERING OR POWER BRAKES ALMOST REAR ENDED ON I-25. TROUBLE CODE SAYS P2135 THROTTLE BODY HAS HAPPENED 20 TIMES OR MORE IN 8 MONTHS. DEALER WHERE PURCHASED SAY THEY NEVER HEARD OF THIS PROBLEM THEN SAID NEW WIRING HARNESS MIGHT FIX IT,KNEW THE PRICE WITHOU..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28