The 2001 GMT800 Yukon XL is a workhorse platform with proven powertrain bones, but watch for transmission cooler line failures, intake gasket oil consumption, and characteristic AFM/DOD-related issues on 5.3L engines—though 2001 predates active fuel management, piston ring failures and oil burning are still documented concerns on higher-mileage examples.
Transmission Oil Cooler Line Failure at Radiator
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: Pink/red fluid in coolant reservoir or milkshake appearance in transmission pan, Transmission slipping or erratic shifting after coolant intrusion, External trans fluid leaks at radiator quick-connect fittings
Fix: Replace radiator and flush both cooling and transmission systems; if contamination occurred, transmission rebuild typically required within 5,000 miles. Cooler line corrosion where they enter radiator is the root cause. 6-12 hours labor depending on trans damage.
Symptoms: Excessive oil consumption (1 quart per 1,000 miles or worse), Oil pooling in intake valley visible when removing upper plenum, White smoke on cold start, rough idle when oil contaminates intake ports
Fix: Replace lower intake manifold gaskets (Fel-Pro revised composite gaskets, NOT OEM plastic), clean intake ports. Common to find oil sucked into cylinders through PCV passages. 4-6 hours labor.
Estimated cost: $600-$1,200
Piston Ring Failure and Cylinder Scoring (5.3L Vortec)
Occasional · high severity
Typical onset: 120,000-200,000 mi
Symptoms: Severe oil consumption (2+ quarts per 1,000 miles), Blue smoke under acceleration, Low compression on multiple cylinders, particularly 1, 5, or 7, Metallic noise from cylinder walls on cold start
Fix: Requires engine rebuild or replacement. Some 5.3L engines experienced piston scuffing and ring land failure due to inadequate oil control. Short block replacement or full rebuild necessary. 18-24 hours labor for R&R and rebuild.
Estimated cost: $3,500-$6,500
4L60E/4L80E Transmission 3-4 Clutch Pack Failure
Common · high severity
Typical onset: 120,000-180,000 mi
Symptoms: Slipping or flare on 3-4 upshift, No 4th gear/overdrive, high RPM on highway, Burnt transmission fluid smell, metal shavings in pan
Fix: Transmission rebuild focusing on 3-4 clutch pack, input drum, and valve body. Common wear pattern on these units, especially if towing history. 8-12 hours labor for removal, rebuild, reinstall.
Estimated cost: $1,800-$3,200
Fuel Pump Failure (In-Tank Module)
Occasional · medium severity
Typical onset: 90,000-140,000 mi
Symptoms: No-start condition with crank but no fire, Intermittent stalling when fuel level below 1/4 tank, Whining noise from rear on key-on, Loss of fuel pressure under load
Fix: Replace complete fuel pump module assembly; dropping 42-gallon tank on XL model is labor-intensive. NHTSA recall addressed some units but not all years. 2-3 hours labor.
Estimated cost: $500-$900
Transfer Case Encoder Motor Failure (4WD Models)
Occasional · medium severity
Typical onset: 70,000-130,000 mi
Symptoms: Service 4WD light illuminated on dash, Inability to shift into 4HI or 4LO, Grinding noise from transfer case when attempting shift, Stuck in 2WD or 4WD mode
Fix: Replace encoder motor and reprogram with Tech2; sometimes requires full transfer case reseal if internal mode fork is damaged. 2-4 hours labor depending on additional repairs.
Estimated cost: $350-$950
Front Hub Bearing Assembly Failure
Common · medium severity
Typical onset: 80,000-120,000 mi
Symptoms: Grinding or humming noise that increases with speed, ABS light intermittent or constant (wheel speed sensor integrated), Wheel play detectable when jacked up, Noise changes with steering input
Fix: Replace complete hub bearing assembly; these are sealed units with integrated ABS sensors. NHTSA documented hub issues. 1.5-2 hours per side labor.
Estimated cost: $300-$600
Owner tips
Change transmission fluid every 50k miles even though GM says 'lifetime'—cooler line failures are preventable with early radiator replacement at 100k
Use quality synthetic oil and monitor consumption closely; if exceeding 1 quart per 3,000 miles, investigate intake gaskets before piston damage occurs
Inspect brake lines and fuel lines annually in rust-belt states—these trucks corrode hard underneath despite decent body longevity
Aftermarket transmission cooler installation strongly recommended if towing regularly; factory cooler is marginal for XL's weight
Solid platform if transmission and engine have been maintained, but budget $2,000-4,000 for deferred powertrain issues on any example over 120k miles—pass on anything with documented oil consumption or trans slippage.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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CERTAIN FEDERAL-MOGUL REPLACEMENT WHEEL HUB ASSEMBLIES WITH THE BRAND NAMES: NATIONAL, CARQUEST P/NOS. 515020, 515021, 515025, 515053, 515054, 515059, AND 515060, SHIPPED BETWEEN JANUARY 23, 2006, AND DECEMBER 20, 2007, SOLD FOR LIGHT DUTY AND MEDIUM DUTY TRUCKS. THE INBOARD RETENTION NUT USED TO MAINTAIN HUB BEARING ASSEMBLY CAN LOOSEN RESULTING IN AN ABS LIGHT INDICATION, NOISE, AND/OR WHEEL SEPARATION.
Consequence: WHEEL SEPARATION CAN RESULT IN A VEHICLE CRASH.
Remedy: FEDERAL-MOGUL WILL NOTIFY CUSTOMERS AND WILL REPLACE THE HUB ASSEMBLY FREE OF CHARGE. THE RECALL BEGAN ON FEBRUARY 7, 2008. OWNERS CAN CONTACT FEDERAL-MOGUL TOLL-FREE AT 877-489-6659.
ENGINE AND ENGINE COOLING · 07V521000
2007-11-07 · EA06016
ON CERTAIN PICKUP TRUCKS EQUIPPED WITH AN 8.1L V8 ENGINE, THE CRANKSHAFT POSITION CAN OPERATE INTERMITTENTLY OR FAIL COMPLETELY. IF THE SENSOR OPERATES INTERMITTENTLY, THE SES LIGHT MAY ILLUMINATE AND THE VEHICLE MAY RUN ROUGH. THE ENGINE MAY STALL, AND IF SO, MAY RE-START IMMEDIATELY OR AFTER A COOL DOWN PERIOD.
Consequence: IF THE SENSOR BECOMES COMPLETELY INOPERATIVE, THE ENGINE WILL QUIT RUNNING AND WILL NOT RE-START. EITHER OF THESE FAILURES CAN INCREASE THE RISK OF A CRASH.
Remedy: DEALERS WILL REPLACE THE CRANKSHAFT POSITION SENSOR FREE OF CHARGE. THE RECALL BEGAN ON DECEMBER 18, 2007. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 AND GMC AT 1-866-996-9463.
FUEL SYSTEM, GASOLINE · 06E043000
2006-05-19
CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18, 2005, THROUGH MARCH 21, 2006, SOLD FOR USE ON THE VEHICLES LISTED ABOVE AND ON CERTAIN SCHOOL BUSES. (TO SEE THE SCHOOL BUS ENGINE SIZES, CLICK ON "DOCUMENT SEARCH" AND THEN "BUS APPLICATIONS"). THE CONNECTOR ON THE FUEL FILTER WAS NOT MANUFACTURED TO HONEYWELL'S SPECIFICATION. AS A RESULT, THE O-RING MAY NOT SEAT CORRECTLY ON THE FUEL LINE.
Consequence: THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. IN THE PRESENCE OF AN IGNITION SOURCE, A FIRE COULD OCCUR.
Remedy: HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 18, 2006. OWNERS MAY CONTACT FRAM CUSTOMER SERVICE AT 1-800-890-2075 (OPTION 1).
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP · 05V379000
2005-08-29 · PE05020
CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES MAY EXPERIENCE UNWANTED ANTILOCK BRAKE SYSTEM (ABS) ACTIVATION. THIS CONDITION IS MORE LIKELY TO OCCUR IN ENVIRONMENTALLY CORROSIVE AREAS. THIS RECALL WILL BE LAUNCHED IN THE "SALT BELT" STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MARYLAND, MASSACHUSETTS, MAINE, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN AND THE DISTRICT OF COLUMBIA ONLY.
Consequence: THIS CAN CAUSE INCREASED STOPPING DISTANCES DURING LOW-SPEED BRAKE APPLICATIONS, WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS ARE TO REMOVE THE WHEEL SPEED SENSOR AND THOROUGHLY CLEAN THE WHEEL SPEED SENSOR MOUNTING SURFACE ON THE BEARING, APPLY RUST INHIBITOR TO THE CLEANED SURFACE, GREASE THE MOUNTING SURFACE, REINSTALL THE WHEEL SPEED SENSOR, AND CHECK THE PEAK-TO-PEAK OUTPUT VOLTAGE TO ENSURE THE WHEEL SPEED SIGNAL IS WITHIN SPECIFICATIONS. THE RECALL BEGAN SEPTEMBER 22, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 OR GMC AT 1-866-996-9463.
CERTAIN TRUCKS AND SPORT UTILITY VEHICLES WERE BUILT WITH FUEL MODULE RESERVOIR ASSEMBLIES THAT CONTAIN FUEL PUMP WIRES CONNECTORS MAY OVERHEAT UNDER CERTAIN OPERATING CONDITIONS.
Consequence: IF THE IGNITION CIRCUIT WIRE IS EXPOSED, THE FUEL PUMP FUSE WILL BLOW, DISABLING THE FUEL PUMP AND CAUSING AN ENGINE STALL OR NO-START CONDITION. IF SUFFICIENT HEAT IS CONDUCTED TO THE PASS-THROUGH CONNECTOR, A HOLE IN THE CONNECTOR MAY RESULT, WHICH MAY CAUSE A 'SERVICE ENGINE SOON' LIGHT TO BE ILLUMINATED DURING THE EMISSION SYSTEM DIAGNOSTIC ROUTINE. FUEL VAPOR AND IN SOME CASES LIQUID FUEL MAY LEAK OUT OF THE FUEL TANK THROUGH THE HOLE IN THE CONNECTOR BODY. FUEL LEAKAGE, IN THE PRESENCE OF AN IGNITION SOURCE, COULD RESULT IN A FIRE. ALSO IF THE IGNITION CIRCUIT OR GROUND WIRE IS EXPOSED AND SHORTS TO THE FUEL LEVEL SENDER CARD WIRES, INACCURATE FUEL LEVEL READINGS MAY RESULT.
Remedy: DEALERS WILL REMOVE THE FUEL TANK, AND REMOVE THE MODULE RESERVOIR ASSEMBLIES FROM THE TANK, AND INSTALL A NEW SERVICE KIT FREE OF CHARGE. AN INTERIM LETTER TO OWNERS WAS MAILED ON MAY 25, 2005. THE OWNERS WERE RE-NOTIFIED ON OCTOBER 19, 2005, SINCE PARTS ARE NOW AVAILABE. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 AND GMC AT 1-866-996-9463.
STRUCTURE · 03V094000
2003-03-07
CERTAIN PICKUP TRUCK, VAN, AND MINI VAN CONVERSIONS EQUIPPED WITH SOUTHERN COMFORT BUILT RUNNING BOARDS THAT CONTAIN CERTAIN COURTESY LIGHTS MANUFACTURED BY AMERICAN TECHNOLOGY COMPONENTS, INC. THESE UNITS CONTAIN A COURTESY LIGHT OR LIGHTS THAT MIGHT OVERHEAT WHEN THE WIRE HARNESS IS EXPOSED TO EXCESSIVE MOISTURE AND ROAD SALT.
Consequence: THIS OVERHEATING CONDITION CAN CAUSE THE RUNNING BOARD TO MELT OR CAUSE A FIRE.
Remedy: DEALERS WILL REPLACE THE WIRING HARNESS ON THESE RUNNING BOARDS. OWNER NOTIFICATION BEGAN MARCH 7, 2003. 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 SOUTHERN COMFORT AT 1-800-745-6096.
SEATS:FRONT ASSEMBLY:HEAD RESTRAINT · 02V253000
2002-09-17
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: 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.
SEAT BELTS:FRONT:RETRACTOR · 01V159000
2001-05-17
VEHICLE DESCRIPTION: PICKUP AND UTILITY TRUCKS. SOME OF THESE VEHICLES HAVE AN INTERNAL COMPONENT IN THE OUTBOARD SEAT BELT RETRACTORS FOR THE 2ND AND 3RD ROW OF SEATS THAT COULD BE CRACKED. WITH REPEATED ACTUATION OF THE LOCKING MECHANISM, THE CRACK COULD SPREAD TO THE POINT SUCH THAT THE SEAT BELT WOULD NO LONGER LOCK.
Consequence: IN A CRASH, INCREASED OCCUPANT INJURY COULD RESULT FROM THE NO-LOCK CONDITION.
Remedy: DEALERS WILL INSPECT THE OUTBOARD SEAT BELTS FOR SPECIFIC LOT NUMBERS AND REPLACE THE BELTS IF NECESSARY. GM IS ENCLOSING AN INSPECTION PROCEDURE FOR THE OWNERS TO USE OR THEY CAN HAVE THEIR DEALERS DO THE INSPECTIONS. OWNER NOTIFICATION BEGAN JULY 2, 2001. 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 OR GMC AT 1-800-462-8782.
STRUCTURE:BODY · 00V343000
2000-10-25
VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES. SOME OF THESE VEHICLES HAVE LOOSE OR MISSING REAR WHEELHOUSE PLUGS. UNDER CERTAIN VEHICLE OPERATING CONDITIONS, EXHAUST GASES CAN FLOW FORWARD AND ACCUMULATE IN THE REAR WHEELHOUSE.
Consequence: THESE GASES COULD FLOW INTO THE PASSENGER COMPARTMENT IF THE PLUG IS MISSING OR LOOSE AND COULD CAUSE POSSIBLE ILLNESS, UNCONSCIOUSNESS, OR DEATH.
Remedy: DEALERS WILL INSPECT THE VEHICLE FOR LOOSE OR MISSING WHEELHOUSE PLUGS AND INSTALL NEW PLUGS IF NECESSARY.
Performance
Horsepower
285hp
Torque
325lb-ft
0–60 mph
10.2sec
Quarter mile
17.8sec
Top speed
105mph
Fuel economy (EPA)
City
13mpg
Highway
16mpg
Combined
14mpg
Fuel
Regular Gasoline
Capability & size
Towing capacity
10,000lb
Payload
1,625lb
Curb weight
5,515lb
EPA class
Sport Utility Vehicle - 2WD
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2001 GMC Yukon XL 5.3L V8 Vortec and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.