2001 Gmc Denali: Reliability Data

Source: NHTSA — 31 complaints
31
Total Complaints
64,300mi
Median Mileage
ENGINE AND ENGINE COOLING:ENGINE
Top Issue
3
Crash Reports

When Do Complaints Happen?

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

50,600 25th Percentile
64,300 Median Mileage
90,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE AND ENGINE COOLING:ENGINE
3
SEATS:FRONT ASSEMBLY:HEAD RESTRAINT
2
POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
2
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
2
STEERING:HYDRAULIC POWER ASSIST:PUMP
2
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
2
SERVICE BRAKES
2
AIR BAGS
2
ELECTRICAL SYSTEM
1
POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT:SEAL
1

Severity Assessment

3
Crashes
0
Fires
2
Injuries
0
Deaths

Sample Complaint Reports

"HEADRESTS DO NOT STAY IN SELECTED POSITION. SLIGHT HEAD PRESSURE RESULTS IN FAILURE TO REMAIN IN VERTICAL POSITION. NOT EFFECTIVE IN MINIMIZING NECK INJURIES."
"HEADRESTS DO NOT STAY IN SELECTED POSITION. SLIGHT HEAD PRESSURE RESULTS IN FAILURE TO REMAIN IN VERTICAL POSITION. NOT EFFECTIVE IN MINIMIZING NECK INJURIES."
"A "WEIRD" SOUND WAS HEARD. THE TRUCK LOCKED UP AND THE FRONT END EXPLODED. THE DEALER REPLACED THE DIFFERENTIAL."

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