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2001 GMC Denali

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 17 of 22 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Power Train. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel System, Gasoline. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

2 crash reports0 fire reports1 injury reports

Power Train complaints

5 reports
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90,000 miles · Jun 18, 2008
Electrical SystemEngine And Engine CoolingPower Train

TL*THE CONTACT OWNS A 2001 GMC DENALI. EVERYTIME THE VEHICLE UNDERGOES A ROUTINE OIL CHANGE, THE CONTACT HAS TO PLACE AN EXCESSIVE AMOUNT OF OIL BACK IN THE ENGINE SHORTLY AFTERWARDS. IN ADDITION, THE BATTERY TERMINAL CABLES SPORADICALLY LOOSEN AND CAUSE THE ALTERNATOR TO FAIL. THIRDLY, WHILE DRIVING AT VARIOUS SPEEDS, THE 4 …

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TL*THE CONTACT OWNS A 2001 GMC DENALI. EVERYTIME THE VEHICLE UNDERGOES A ROUTINE OIL CHANGE, THE CONTACT HAS TO PLACE AN EXCESSIVE AMOUNT OF OIL BACK IN THE ENGINE SHORTLY AFTERWARDS. IN ADDITION, THE BATTERY TERMINAL CABLES SPORADICALLY LOOSEN AND CAUSE THE ALTERNATOR TO FAIL. THIRDLY, WHILE DRIVING AT VARIOUS SPEEDS, THE 4 WHEEL DRIVE SPONTANEOUSLY ENGAGES. LASTLY, THE VEHICLE IDLES ROUGHLY WHEN IT IS STARTED. THE VEHICLE WAS TAKEN TO THE DEALER ON NUMEROUS OCCASIONS, BUT THEY COULD NOT CORRECT THE FAILURE. THE CONTACT HAS COPIES OF THE VEHICLE'S SERVICE HISTORY. THE FAILURE MILEAGE WAS 90,000 AND CURRENT MILEAGE WAS 163,000.

NHTSA ODI #10231471

68,640 miles · Feb 9, 2006
Power Train

DT*: THE CONTACT STATED WHILE DRIVING 60MPH UNDER NORMAL DRIVING CONDITIONS, THERE WAS A RATTLING NOISE FROM UNDERNEATH THE VEHICLE AND THE VEHICLE PROCEEDED TO STALL WITHOUT WARNING. THE CONTACT MANAGED TO PULL OVER AND PARK THE VEHICLE. UPON FURTHER INVESTIGATION, THE DRIVELINE DIFFERENTIAL UNIT WAS BROKEN INTO PIECES. DUE…

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DT*: THE CONTACT STATED WHILE DRIVING 60MPH UNDER NORMAL DRIVING CONDITIONS, THERE WAS A RATTLING NOISE FROM UNDERNEATH THE VEHICLE AND THE VEHICLE PROCEEDED TO STALL WITHOUT WARNING. THE CONTACT MANAGED TO PULL OVER AND PARK THE VEHICLE. UPON FURTHER INVESTIGATION, THE DRIVELINE DIFFERENTIAL UNIT WAS BROKEN INTO PIECES. DUE TO THE INABILITY OF THE VEHICLE BEING DRIVEN, THE VEHICLE WAS TOWED HOME. A MECHANIC FROM A DEALERSHIP INSPECTED THE VEHICLE. THE MECHANIC SUGGESTED REPLACING THE DRIVELINE DIFFERENTIAL UNIT.

NHTSA ODI #10149867

64,300 miles · Oct 25, 2005
Exterior LightingFuel System, GasolinePower Train

DT: THE CONTACT STATED THE TRANSMISSION SEAL WAS DEFECTIVE AFTER A CERTAIN AMOUNT OF MILES, IT ALLOWED THE COOLING SYSTEM TO LEAK INTO THE TRANSMISSION. WHEN ACCELERATING THE TRANSMISSION WOULD DOWN SHIFT INTO FIRST GEAR, THIS WOULD MAKE THE VEHICLE JUMP. THE TRANSMISSION FAILED AT AN INTERSECTION. WHEN THIS OCCURRED THE VE…

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DT: THE CONTACT STATED THE TRANSMISSION SEAL WAS DEFECTIVE AFTER A CERTAIN AMOUNT OF MILES, IT ALLOWED THE COOLING SYSTEM TO LEAK INTO THE TRANSMISSION. WHEN ACCELERATING THE TRANSMISSION WOULD DOWN SHIFT INTO FIRST GEAR, THIS WOULD MAKE THE VEHICLE JUMP. THE TRANSMISSION FAILED AT AN INTERSECTION. WHEN THIS OCCURRED THE VEHICLE HAD TO BE DRIVEN HOME AND TO THE DEALERSHIP IN FIRST GEAR. IT WAS TAKEN TO THE DEALERSHIP WHO DIAGNOSED THE PROBLEM. THE TRANSMISSION SEAL BROKE BECAUSE THE TRANSMISSION WAS DOWN SHIFTING TOO HARD. *AK UPDATED 11/16/2005 - THE HEADLAMP LENS WAS LOOSE. THE POWER STEERING PULLEY WAS OUT OF POSITION AND CAUSED THE SERPENTINE BELT IS SQUEAKING. THE PULLEY WAS REPOSITIONED. A SMALL FUEL VAPOR LEAK WAS DETECTED POSSIBLY FROM FUEL FILLER CAP NOT BEING FULLY TIGHTENED. THE FUEL PUMP LEAKED WHEN THE TANK WAS FULL. IT WAS NECESSARY TO REPLACE THE FUEL TANK SENDING UNIT. *NM A FRONT END ALIGNMENT WAS PERFOMED ON THE VEHICLE. UPDATED 01/19/06.*JB

NHTSA ODI #10140731

63,900 miles · May 10, 2005
Power TrainSteering

MY HUSBAND WAS DRIVING WITH MY FOUR CHILDREN GOING ABOUT 5MPH WHEN HE WENT TO MAKE A LEFT TURN AND LOST THE POWER STEERING. BEING SO CLOSE TO HOME, HE WAS ABLE TO DRIVE IT HOME. MY HUSBAND ALSO NOTICED THAT AN AXLE SEAL WAS LEAKING AS WELL AND THIS WAS ALSO CONSIDERED COMMON FOR PROBLEMS. WE USE THIS VEHICLE AS OUR ONLY FAM…

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MY HUSBAND WAS DRIVING WITH MY FOUR CHILDREN GOING ABOUT 5MPH WHEN HE WENT TO MAKE A LEFT TURN AND LOST THE POWER STEERING. BEING SO CLOSE TO HOME, HE WAS ABLE TO DRIVE IT HOME. MY HUSBAND ALSO NOTICED THAT AN AXLE SEAL WAS LEAKING AS WELL AND THIS WAS ALSO CONSIDERED COMMON FOR PROBLEMS. WE USE THIS VEHICLE AS OUR ONLY FAMILY CAR, SO NATURALLY WE HAD IT FIXED RIGHT AWAY. WHAT REALLY CONCERNED AND ALERTED MYSELF TO THIS COMPLAINT WAS WHEN MY HUSBAND TOOK THE VEHICLE IN TO GET LOOKED AT A MECHANIC TOLD HIM THAT THEY HAVE FIXED THESE TYPES OF PROBLEMS MANY TIMES BEFORE AND IT WOULD ONLY TAKE TWO HOURS. WHEN I WENT TO PICK UP THE VEHICLE, I ASKED FOR MYSELF AGAIN, AND THE SAME MECHANIC TOLD ME IT IS VERY COMMON WITH THESE VEHICLES (SUV"S) WHY DID THIS HAPPENED WITH ONLY 60,000 MILES? THIS IS NOT VERY ENCOURAGING AND IS SOMEWHAT UPSETTING. I AM VERY CONCERNED BECAUSE I AM RELOCATING TO TEXAS AND THIS COULD HAVE BEEN A DISASTER IF WE WERE TRAVEING WITH THIS VEHICLE AND POSSIBLY A TRAILER ATTACHED. I AM VERY CONCERNED THAT IT MAY HAPPEN AGAIN AS I NOTICED THERE WAS A SIMILAR COMPLAINT BEFORE MINE AND THE SAME VEHICLE MAKE AND YEAR. I HAVE NEVER HAD TO REPLACE A STEERING PUMP WITH ANY OTHER VEHICLE I HAVE OWNED. WE BOUGHT THIS VEHICLE USED AFTER IT WAS TURNED IN FROM A LEASE. I AM CONVINCED THAT I PURCHASED THIS VEHICLE WITH THIS PROBLEM ALREADY IN MOTION, ALTHOUGH I CANNOT PROVE IT. I WOULD APPRECIATE THIS LOOKED INTO AND A RESPONSE TO MY COMPLAINT IN A TIMELY FASHION. I MAY HAVE OVERLOOKED THIS BUT CONSIDERING THIS MECHANIC INFORMED ME AND MY HUSBAND THAT HE HAS WORKED ON THESE MANY TIMES BEFORE REALLY CONCERNS ME. I WILL CONTINUE TO PURSUE THIS.

NHTSA ODI #10120581

50,000 miles · Apr 24, 2003
Power Train

A "WEIRD" SOUND WAS HEARD. THE TRUCK LOCKED UP AND THE FRONT END EXPLODED. THE DEALER REPLACED THE DIFFERENTIAL.

NHTSA ODI #10017540

Official recalls

1

02V253000 · Seats:front Assembly:head Restraint

Sep 17, 2002

ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH REARWARD FOLDING HEAD RESTRAINTS ON THE SECOND ROW SEATS, TWO POTENTIAL PINCH POINTS EXIST ON EACH OF THE FOLDING HEAD RESTRAINTS WHEN THE RESTRAINTS ARE FOLDED REARWARD AS THE SEATBACK IS FOLDED DOWN.

Consequence & remedy

Consequence: IF A PERSON WERE TO INSERT THEIR FINGER(S) INTO THE PINCH POINT WHEN THE HEAD RESTRAINT FOLDS, IT COULD TRAP AND PINCH THE FINGER(S) CAUSING INJURY.

Remedy: DEALERS WILL INSTALL PROTECTIVE COVERS OVER THE PINCH POINTS. OWNER NOTIFICATION BEGAN NOVEMBER 8, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020, GMC AT 1-800-462-8782, OR CADILLAC AT 1-800-458-8006.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

DP05009 · Parking Brake Failure

Opened Dec 20, 2005 · Closed May 31, 2006

Status: closed (inferred from source dates) · Parking Brake; Parking Brake:conventional; Parking Brake:conventional:mechanical

ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.

Additional source detail variants (3)

Parking Brake:conventional

ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.

Parking Brake:conventional:mechanical

ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.

Parking Brake

ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.