The 2002 Bravada with the 4.2L inline-six (Vortec LL8) is plagued by catastrophic engine failures from oil consumption and cooling system weaknesses, plus the typical GM 4L60E transmission troubles. The 4.3L V6 is rare in this year but far more durable if you find one.
4.2L I6 Catastrophic Oil Consumption Leading to Engine Failure
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: Blue smoke on startup or acceleration, Burning through a quart of oil every 500-1,000 miles, Check engine light for misfire codes, Sudden rod knock or seized engine if oil level drops unnoticed
Fix: The LL8 I6 has weak piston ring design and valve seal issues that lead to excessive oil burning. Once advanced, requires full engine rebuild or replacement. Rebuild involves complete disassembly, new pistons, rings, bearings, seals — 18-24 labor hours. Many shops won't rebuild these anymore; used/reman engines are common.
Estimated cost: $4,500-7,500
4L60E Transmission Failure and Oil Cooler Line Leaks
Common · high severity
Typical onset: 100,000-160,000 mi
Symptoms: Harsh 1-2 or 2-3 shifts, slipping under load, Transmission fluid puddling under vehicle from cooler lines, Delayed engagement into Drive or Reverse, Burnt fluid smell, dark brown or black ATF
Fix: The 4L60E in these trucks is marginal for the vehicle weight. Cooler lines rust through at the radiator connections (2-3 hours to replace lines). Full transmission rebuild or replacement is 8-12 hours. Always replace cooler lines during any transmission work to prevent contamination.
Estimated cost: $2,200-3,800
Intake Manifold Gasket Failure (4.2L I6)
Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: Coolant leak at front of engine, visible orange residue, Overheating or low coolant warnings, Rough idle, possible misfires if coolant enters cylinders, White smoke from exhaust if internal leak is severe
Fix: The LL8's plastic intake manifold gaskets deteriorate and leak coolant externally or internally. Requires removing intake plenum, replacing gaskets and often the manifold itself if warped. 5-7 hours labor. Can cause engine damage if coolant mixes with oil.
Estimated cost: $800-1,400
Transfer Case Encoder Motor and Mode Switch Failure
Occasional · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: Service 4WD light illuminated on dash, Unable to shift into or out of 4WD modes, Grinding or clicking noise from transfer case area, 4WD engages randomly or won't disengage
Fix: The BorgWarner 4485 transfer case uses an electric encoder motor that fails, leaving you stuck in 2WD or 4WD. Motor replacement is 2-3 hours. If internal mode fork is damaged, transfer case teardown adds 6-8 hours. Diagnosis requires Tech 2 scanner.
Estimated cost: $450-1,200
Front Differential Leaks and Bearing Noise
Occasional · medium severity
Typical onset: 90,000-140,000 mi
Symptoms: Gear oil leak at pinion seal or axle tubes, Whining or growling noise from front axle during acceleration, Clunking when engaging 4WD or turning sharply, Vibration at highway speeds if bearings are worn
Fix: Front diff sees abuse from AWD operation. Pinion seal replacement is 3-4 hours. If carrier bearings or ring-and-pinion are worn, full rebuild is 8-10 hours and requires setup tools. Neglected leaks lead to catastrophic failure.
Estimated cost: $600-2,500
Fuel Pump and Sending Unit Failure
Occasional · medium severity
Typical onset: 80,000-130,000 mi
Symptoms: No-start condition, cranks but won't fire, Intermittent stalling, especially when fuel level is low, Fuel gauge reads erratically or stays on empty, Whining noise from fuel tank area
Fix: Fuel pump module in the tank fails, often taking out the level sender with it. Tank must be dropped for access — 3-4 hours. OE-quality modules are critical; cheap aftermarket units fail quickly. Replace fuel filter at same time.
Estimated cost: $700-1,100
HVAC Blend Door Actuator Failure
Common · low severity
Symptoms: Clicking or ticking noise from behind the dash, Heat blows cold or A/C blows hot, no temp control, Airflow stuck on defrost or floor vents, Noise stops when ignition is cycled but returns
Fix: Multiple actuators control blend doors; they fail and make constant clicking noise. Most are accessible under the dash with 1-2 hours labor each. The worst one requires partial dash removal (4-6 hours). Common failure; plan on replacing all eventually.
Estimated cost: $250-800
Owner tips
Check oil level every fillup religiously on the 4.2L I6 — these engines will destroy themselves in under 50 miles if run low on oil.
Flush transmission and transfer case every 30,000 miles; use Dexron VI and AutoTrak II fluid respectively.
Replace intake manifold gaskets and coolant hoses preemptively around 80k miles to avoid catastrophic overheating.
Budget $500/year for surprises — these are 20+ year old GM trucks with complex AWD systems and fragile engines.
Hard pass unless you find a unicorn 4.3L V6 model or get a 4.2L dirt cheap with documented recent engine rebuild and transmission service — otherwise you're buying someone else's imminent $6,000 problem.
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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ON CERTAIN SPORT UTILITY VEHICLES, VIBRATION AND HEAT MAY CAUSE THE TAIL LAMP/STOP LAMP BULB TO LOOSEN IN ITS SOCKET. IF THIS OCCURS, THE BULB MAY FLICKER AND EVENTUALLY BECOME INOPERATIVE.
Consequence: AN INOPERATIVE BRAKE LAMP WILL NOT CONVEY THE DRIVER'S INTENTION OF STOPPING TO DRIVERS IN FOLLOWING VEHICLES, AND AN INOPERATIVE REAR TURN SIGNAL LAMP WILL NOT CONVEY THE DRIVER'S INTENTION TO TURN TO DRIVERS IN FOLLOWING VEHICLES. BOTH OF THESE FAILURES CAN INCREASE THE RISK OF A CRASH.
Remedy: DEALERS WILL INSPECT THE TAIL LAMP/STOP LAMP ASSEMBLIES, AND IF NECESSARY, REPLACE THEM. THE RECALL BEGAN ON NOVEMBER 22, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438, OLDSMOBILE AT 1-800-630-6537, BUICK AT 1-866-608-8080, OR
GMC AT 1-866-996-9463.
ENGINE AND ENGINE COOLING · 04V289000
2004-06-23 · EA03007
SOME SPORT UTILITY VEHICLES EQUIPPED WITH AN ELECTRONICALLY CONTROLLED AIR SUSPENSION (ECAS) HAVE A CONDITION IN WHICH THE ECAS MAY PRODUCE A BRIEF ELECTRICAL SPIKE WHILE THE VEHICLE IS OPERATING. THIS ELECTRICAL SPIKE CAN DISRUPT THE POWERTRAIN CONTROL MODULE (PCM) CAUSING THE VEHICLE TO STALL.
Consequence: IF THE SPIKE DAMAGES THE PCM, THE VEHICLE MAY NOT RESTART. IF THIS HAPPENS WHILE THE VEHICLE IS MOVING, A CRASH COULD OCCUR WITHOUT PRIOR WARNING.
Remedy: DEALERS WILL INSTALL A WIRING HARNESS. THE RECALL WILL BEGIN ON AUGUST 19, 2004. OWNERS SHOULD CONTACT OLDSMOBILE AT 1-800-630-6537 OR GMC AT 1-866-996-9463.
SEAT BELTS · 04V201000
2004-04-28
CERTAIN LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 209, "SEAT BELT ASSEMBLIES." ONE OF THE TWO SENSORS IN THE DRIVER'S AND FRONT PASSENGER'S SEAT BELT RETRACTORS COULD BE INOPERATIVE. THE SEAT BELT RETRACTORS WILL LOCK WHEN THE BELT WEBBING IS EXTRACTED DURING A CRASH; HOWEVER, THE MECHANISM THAT LOCKS THE SEAT BELT RETRACTOR WHEN THE VEHICLE DECELERATES QUICKLY, SUCH AS HEAVY BRAKING, MAY NOT OPERATE AS INTENDED.
Consequence: IF THIS WERE TO OCCUR, THE SAFETY BELT MAY NOT RESTRAIN THE OCCUPANT AS INTENDED DURING A CRASH, AND COULD RESULT IN INJURY TO THE OCCUPANT.
Remedy: DEALERS WILL INSPECT THE DRIVER AND FRONT PASSENGER SAFETY BELT RETRACTORS, AND REPLACE THEM IF NECESSARY. OWNER NOTIFICATION BEGAN ON JUNE 24, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, OR OLDSMOBILE AT 1-800-630-6537.
VISIBILITY:WINDSHIELD WIPER/WASHER · 04V046000
2004-02-04 · EA04002
CERTAIN SPORT UTILITY VEHICLES HAVE WINDSHIELD WIPER SYSTEMS THAT WILL NOT TURN ON, CEASE OPERATION WHILE IN USE, FAIL TO TURN OFF/ON BY THEMSELVES (MOISTURE SENSITIVE WIPER SYSTEM), OR HAVE CONTINUOUS WINDSHIELD WASHER PUMP OPERATION BECAUSE THE PRESENCE OF WATER WITHIN THE WIPER MODULES CAN EITHER CAUSE A SHORT CIRCUIT OR CAN LEAD TO THE CORROSION OF COMPONENTS WITHIN THE MODULE.
Consequence: DEPENDING ON THE OCCURRENCE AND WEATHER SITUATION, DRIVER VISIBILITY COULD BE REDUCED, WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS WILL COVER THE WINDSHIELD WIPER MODULE VENT HOLE WITH A PATCH. ALSO, THE WIPER MOTOR, CIRCUIT BOARD, AND ELECTRICAL CONNECTOR WILL BE INSPECTED TO SIGNS OF WATER INTRUSION AND/OR CORROSION AND BE REPLACED AS REQUIRED. THE RECALL BEGAN JULY 6, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438; OLDSMOBILE AT 1-800-630-6537; OR GMC AT 1-866-996-9463.
CERTAIN MINIVANS, PASSENGER AND SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, "CHILD RESTRAINT ANCHORAGE SYSTEM." THE OWNER'S MANUAL DOES NOT EXPLAIN THE MEANING OF THE LOCATION SYMBOLS FOR THE CHILD RESTRAINT LOWER UNIVERSAL ANCHORAGE SYSTEM.
Consequence: THIS DOES NOT MEET THE REQUIREMENTS OF THE STANDARD.
Remedy: OWNERS WILL BE PROVIDED WITH A SUPPLEMENT FOR THEIR OWNER'S MANUAL. THIS SUPPLEMENT DESCRIBES AND SHOWS THE LOCATION SYMBOLS FOR THE CHILD RESTRAINT ANCHORS THAT ARE LOCATED IN THE VEHICLE AND ON THE CHILD RESTRAINT OR BOOSTER CUSHION. OWNER NOTIFICATION BEGAN AUGUST 18, 2003. OWNERS SHOULD CONTACT BUICK AT 1-866-608-8080, CADILLAC AT 1-866-982-2339, CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, PONTIAC AT 1-800-620-7668, OR OLDSMOBILE AT 1-800-630-6537.
CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARDS NO. 101, "CONTROL LOCATION, IDENTIFICATION, AND ILLUMINATION" AND NO. 208, "OCCUPANT CRASH PROTECTION." THESE VEHICLES HAVE AN INTERMITTENT CONDITION DURING VEHICLE START-UP IN WHICH THE INSTRUMENT PANEL CLUSTER MAY NOT PROPERLY POWER UP, RESULTING IN MOST OF THE DISPLAYS, TELLTALE LIGHTS, AND FUNCTIONS (EXCEPT THE SERVICE ENGINE LIGHT, TURN SIGNAL INDICATORS, AND THE INSTRUMENT PANEL CLUSTER BACKLIGHTING) BEING INOPERATIVE.
Consequence: THESE VEHICLES DO NOT COMPLY WITH THE STANDARD.
Remedy: DEALERS WILL REPROGRAM THE INSTRUMENT PANEL CLUSTER. OWNER NOTIFICATION BEGAN MAY 29, 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 CHEVROLET AT 1-800-222-1020, GMC AT 1-800-462-8782, OR OLDSMOBILE AT 1-800-442-6537.
POWER TRAIN:AUTOMATIC TRANSMISSION · 03V075000
2003-03-06
CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 114, "THEFT PROTECTION." THESE VEHICLES ARE EQUIPPED WITH A MECHANICAL OVERRIDE THAT COULD ALLOW THE IGNITION KEY TO BE REMOVED WITH THE SHIFT LEVER IN A POSITION OTHER THAN PARK. IN ADDITION, THESE VEHICLES HAVE AN OVERRIDE THAT CAN ALLOW THE TRANSMISSION TO BE SHIFTED OUT OF PARK WITH THE IGNITION IN THE OFF POSITION.
Consequence: THESE OVERRIDES ARE NOT PERMITTED UNLESS THE VEHICLE HAS A LOCKING STEERING COLUMN.
Remedy: DEALERS WILL ELIMINATE THESE CONDITIONS BY DISABLING THE OVERRIDES. OWNER NOTIFICATION BEGAN ON MAY 29, 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 CHEVROLET AT 1-800-222-1020, GMC AT 1-800-462-8782, OLDSMOBILE AT 1-800-442-6537, OR HUMMER AT 1-866-486-6376.
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS · 02V121000
2002-08-23 · RQ02010
ON CERTAIN SPORT UTILITY VEHICLES, A FUEL FILTER FITTING CAN BECOME DISCONNECTED. IF THIS WERE TO OCCUR WHILE ATTEMPTING TO START THE ENGINE, A NO-START CONDITION WOULD RESULT AND FUEL WOULD BE PUMPED OUT THE FUEL FILTER ONTO THE GROUND.
Consequence: IF THE FITTING BECOMES DISCONNECTED WHILE THE VEHICLE IS IN MOTION, THE ENGINE WOULD STOP DUE TO INADEQUATE FUEL SUPPLY AND CAUSE A LOSS OF POWER STEERING ASSIST. IF AN IGNITION SOURCE WERE PRESENT, FUEL LEAKAGE FROM A DISCONNECTED FUEL FILTER FITTING COULD RESULT IN A FIRE.
Remedy: DEALERS WILL REPLACE THE FUEL FILTER QUICK CONNECT RETAINERS. OWNER NOTIFICATION BEGAN SEPTEMBER 20, 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 OLDSMOBILE AT 1-800-442-6537.
AIR BAGS:FRONTAL · 02V222000
2002-08-09
CERTAIN PASSENGER, MINI VANS, AND SPORT UTILITY VEHICLES HAVE AN AIR BAG INFLATOR ON THE DRIVER'S SIDE THAT COULD FRACTURE AT A WELD DURING A DEPLOYMENT.
Consequence: PIECES OF THE INFLATOR COULD STRIKE AND INJURE VEHICLE OCCUPANTS AND THE AIR BAG CUSHION WOULD NOT INFLATE FULLY, REDUCING THE CAPABILITY OF THE BAG TO PROTECT THE DRIVER.
Remedy: DEALERS WILL INSPECT, AND REPLACE, IF NECESSARY, THE AIR BAG MODULE ASSEMBLY ON THE DRIVER'S SIDE. OWNER NOTIFICATION BEGAN AUGUST 15, 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 BUICK AT 1-800-521-7300, CADILLAC AT 1-800-458-8006, CHEVROLET AT 1-800-222-1020, GMC AT 1-800-462-8782, OLDSMOBILE AT 1-800-442-6537, OR PONTIAC AT 1-800-762-2737.
SUSPENSION:FRONT:CONTROL ARM:LOWER ARM · 01V126000
2001-04-12
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES. UNDER CERTAIN CIRCUMSTANCES THE FRONT LOWER CONTROL ARM BRACKETS MAY FRACTURE. THIS FRACTURE COULD RESULT IN SEPARATION OF THE FRONT LOWER CONTROL ARM FROM THE FRAME.
Consequence: A SEPARATION COULD RESULT IN LOSS OF VEHICLE CONTROL, RESULTING IN A CRASH.
Remedy: DEALERS WILL REPLACE THE LEFT AND RIGHT FRONT LOWER CONTROL ARM BRACKETS. OWNER NOTIFICATION BEGAN BY TELEPHONE ON APRIL 4, 2001. THE FOLLOWUP LETTER TO CONSUMERS WAS MAILED MAY 3, 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, OLDSMOBILE AT 1-800-442-6537, OR GMC AT 1-800-462-8782.
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