The 1997 Buick Regal, built on GM's W-body platform, is known for solid 3.8L V6 reliability but suffers from chronic intake manifold gasket failures on the 3.1L, transmission cooler line rot, and transmission mount failures that accelerate torque converter wear.
Intake Manifold Gasket Failure (3.1L V6)
Common · high severity
Typical onset: 60,000-100,000 mi
Symptoms: Coolant loss with no visible external leaks, White exhaust smoke on cold starts, Overheating under load, Milky oil cap residue, Rough idle or misfire codes
Fix: Upper and lower intake gaskets replaced along with thermostat and coolant flush; 6-8 labor hours. Often find corroded intake runners requiring manifold replacement if caught late.
Estimated cost: $800-1,400
Transmission Oil Cooler Line Corrosion
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: ATF puddles under front of vehicle, Low transmission fluid warning, Harsh shifting or slipping, Pink fluid spray visible on undercarriage
Fix: Replace both steel cooler lines from transmission to radiator; rust perforation at mounting brackets is typical. 2-3 labor hours plus fluid refill and system flush.
Estimated cost: $400-700
Transmission Mount Collapse (4T65-E)
Common · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: Heavy clunk on acceleration or deceleration, Vibration at idle in gear, Transmission shifter feels notchy, Visible sag on passenger side of engine bay
Fix: Replace front and rear transmission mounts; collapsed rubber causes excessive movement that damages torque converter and internal seals over time. 2-3 labor hours.
Symptoms: Slow coolant loss over weeks, Coolant smell in cabin or outside, Slight temperature creep on highway, Visible green residue at intake valley
Fix: While the 3.8L is far more reliable than the 3.1L, the plastic lower intake gasket eventually weeps; 5-6 labor hours to drop intake, replace gaskets, and reassemble.
Estimated cost: $600-1,000
Ignition Control Module Failure (all engines)
Occasional · high severity
Symptoms: No-start with no spark, Stalling when engine is hot then restarts cold, Intermittent dying at stoplights, No codes or generic crank sensor code
Fix: ICM mounted under coil packs overheats and fails; replacement is 1 hour but diagnosis often takes longer due to intermittent nature. Always replace with AC Delco unit.
Estimated cost: $200-350
Window Regulator Failure
Occasional · low severity
Typical onset: 80,000-140,000 mi
Symptoms: Window drops into door, Grinding noise when operating windows, Window tilts or binds going up, Slow or asymmetrical window movement
Fix: Plastic regulator gears strip; aftermarket regulators fail quickly, OE replacement required. 2 hours per door including door panel removal.
Estimated cost: $250-400
Fuel Pump Failure
Occasional · high severity
Typical onset: 120,000-180,000 mi
Symptoms: No-start with crank but no fuel pressure, Stalling at operating temperature, Loss of power under load, Whining noise from rear seat area
Fix: In-tank pump replacement requires tank drop; 3-4 labor hours. Always replace fuel filter and strainer sock simultaneously.
Estimated cost: $500-800
Owner tips
Change Dexcool coolant every 3 years regardless of mileage—extended intervals accelerate gasket degradation on both engines
Inspect transmission cooler lines annually for surface rust; catching early saves transmission
3.1L engines: watch coolant level religiously and address intake gaskets at first sign of loss
Use only AC Delco ignition parts; aftermarket ICMs and coils fail prematurely on these platforms
Flush transmission fluid every 50k miles—the 4T65-E is sensitive to dirty fluid and benefits hugely from maintenance
Buy a 3.8L naturally aspirated model with service records showing coolant and transmission maintenance—avoid 3.1L engines entirely due to inevitable gasket failures and internal wear from coolant contamination.
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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General Motors LLC (GM) is recalling certain model year 1998-1999 Chevrolet Lumina and Oldsmobile Intrigue, 1997-2004 Buick Regal and Pontiac Grand Prix, 2000-2004 Chevrolet Impala, and 1998-2004 Chevrolet Monte Carlo vehicles. The affected vehicles were previously repaired under recalls 08V-118, 09V-116, and 15V-201 to address the possibility that engine oil may drip onto the hot exhaust manifold.
Consequence: Engine oil that drips onto the hot surface of the exhaust manifold may result in a fire.
Remedy: The remedy applied under recalls 08V-118, 09V-116, and 15V-201 did not adequately remove the safety risk. Under the improved remedy, dealers will replace the engines front valve cover and gasket. Vehicles that are covered by recalls 08V-118, 09V-116, or 15V-201 that have not yet received the original remedy will instead receive the improved remedy under the original recall number. The recall began on February 19, 2016. Owners may contact Chevrolet customer service at 1-800-222-1020, Buick customer service at 1-800-521-7300, Oldsmobile customer service at 1-800-442-6537 and Pontiac customer service at 1-800-458-8006. GM's number for this recall is 15757. Note: Until the improved remedy has been applied, owners are advised to park their vehicle outside since the fire risk exists even when the vehicle is unattended.
ENGINE AND ENGINE COOLING · 09V116000
2009-04-08 · EA07008
GENERAL MOTORS IS RECALLING 1,497,516 MY 1997-2003 BUICK REGAL, MY 1998-2003 CHEVROLET LUMINA, MONTE CARLO AND IMPALA, MY 1998-1999 OLDSMOBILE INTRIGUE, MY 1997-2003 PONTIAC GRAND PRIX VEHICLES EQUIPPED WITH A 3.8L V6 NATURALLY ASPIRATED ENGINE. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH DROPS OF ENGINE OIL MAY BE DEPOSITED ON THE EXHAUST MANIFOLD THROUGH HARD BRAKING.
Consequence: IF THE MANIFOLD IS HOT ENOUGH AND THE OIL RUNS BELOW THE HEAT SHIELD, IT MAY IGNITE INTO A SMALL FLAME AND MAY SPREAD TO THE PLASTIC SPARK PLUG WIRE CHANNEL AND BEYOND INCREASING THE RISK OF AN ENGINE COMPARTMENT FIRE.
Remedy: DEALERS WILL REPLACE THE ENGINES FRONT VALVE COVER AND FRONT-VALVE-COVER GASKET WITH NEW PARTS OF AN IMPROVED DESIGN AND REMOVE THE ENGINES PLASTIC COVER AND PLASTIC OIL-FILL-TUBE EXTENSION, FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN DURING MAY 2016. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, OLDSMOBILE AT 1-800-630-6537, AND PONTIAC AT 1-800-620-7668 OR HTTP://WWW.PONTIAC.COM OR HTTP:WWW.GMOWNERCENTER.COM.
STEERING · 09E005000
2009-02-17
DORMAN IS RECALLING 979 STEERING KNUCKLES, DORMAN P/NOS. 697-902 AND 697-903, SOLD UNDER DORMAN'S "OE SOLUTIONS<SUP>TM</SUP>" BRAND NAME, AND NAPA P/NOS. 7-8502 AND 7-8503 WHICH WERE SOLD FOR REPLACEMENT USE ON THE VARIOUS VEHICLES LISTED ABOVE. A POTENTIAL MATERIAL OR DESIGN DEFECT COULD RESULT IN THE STEERING KNUCKLE BREAKING IN THE HUB AREA.
Consequence: A BROKEN STEERING KNUCKLE COULD RESULT IN LOSS OF STEERING CONTROL AND A POSSIBLE CRASH WITHOUT WARNING.
Remedy: DORMAN WILL NOTIFY OWNERS AND REPLACE THE DEFECTIVE STEERING KNUCKLES FREE OF CHARGE AND REIMBURSE THE REPAIR FACILITY OR OWNER FOR LABOR. THE RECALL BEGAN ON FEBRUARY 23, 2009. OWNERS MAY CONTACT DORMAN'S TOLL-FREE HOTLINE AT 1-800-523-2492 AND PRESS 5.
ENGINE AND ENGINE COOLING · 08V118000
2008-03-12 · EA07008
GM IS RECALLING 207,542 MY 1997-2003 BUICK REGAL AND PONTIAC GRAND PRIX VEHICLES EQUIPPED WITH A 3.8L SUPERCHARGED V-6 ENGINE. THESE VEHICLES HAVE HIGHER FRONT ROCKER COVER GASKET TEMPERATURES, CREATING THE POTENTIAL FOR EARLIER DEGRADATION OF THE FRONT ROCKER COVER GASKET AND EVENTUAL OIL SEEPAGE.
Consequence: CERTAIN UNDERHOOD FIRES MAY BE CAUSED BY DROPS OF ENGINE OIL, FROM SEEPAGE OR SPILLAGE, BEING DEPOSITED ON THE EXHAUST MANIFOLD THROUGH HARD BRAKING. IF THE MANIFOLD IS HOT ENOUGH AND THE OIL RUNS BELOW THE HEAT SHIELD, IT MAY IGNITE INTO A SMALL FLAME AND, IN SOME INSTANCES, THE FIRE MAY SPREAD TO THE PLASTIC SPARK PLUG WIRE CHANNEL AND BEYOND.
Remedy: DEALERS WILL REPLACE THE ENGINES FRONT VALVE COVER AND FRONT-VALVE-COVER GASKET WITH NEW PARTS OF AN IMPROVED DESIGN AND REMOVE THE ENGINES PLASTIC COVER AND PLASTIC OIL-FILL-TUBE EXTENSION, ALONG WITH THE 1-3-5 SPARK PLUG WIRE RETAINERS, FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN DURING MAY 2016. , FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN DURING MAY 2016. UNTIL THE REMEDY IS COMPLETED, GM STRONGLY RECOMMENDS THAT OWNERS OBSERVE THE FOLLOWING IMPORTANT PRECAUTIONS (1) THAT OWNERS DO NOT PARK THEIR VEHICLE IN A GARAGE, CAR PORT, OR OTHER STRUCTURE; (2) IF OWNERS NOTICE A BURNING ODOR, THEY SHOULD HAVE THEIR DEALER INSPECT THE VEHICLE. THE DEALER WILL INSPECT THE VEHICLE WITHOUT CHARGE; (3) USE PREMIUM FUEL (91 OCTANE OR HIGHER) IN THE VEHICLE AS RECOMMENDED IN THE VEHICLE'S OWNER MANUAL. OWNERS MAY CONTACT BUICK AT 1-866-608-8080 OR PONTIAC AT 1-800-620-7668, OR THROUGH THEIR WEBSITE AT <A HREF=HTTP://WWW.GMOWNERCENTER.COM>HTTP://WWW.GMOWNERCENTER.COM</A> .
STEERING:RACK AND PINION · 03V527000
2003-12-11 · EA03019
CERTAIN PASSENGER VEHICLES HAVE LOWER PINION BEARINGS IN THE POWER RACK AND PINION ASSEMBLY IN WHICH THE RETAINER TABS WERE NOT CRIMPED PROPERLY. THESE RETAINERS COULD FAIL AND PERMIT THE BALL BEARINGS TO ESCAPE.
Consequence: IF THIS OCCURS, THE PINION SHAFT CAN BE FORCED UPWARD DURING LEFT TURNS AND BACK DOWN AS THE STEERING WHEEL IS MOVED BACK AND TO THE RIGHT. IF THE PINION SHAFT MOVES FURTHER, THE DRIVER WILL NEED TO EXERT MORE EFFORT TO TURN THE STEERING WHEEL, SIMILAR TO A VEHICLE WITHOUT POWER ASSISTED STEERING. IF THE PINION SHAFT MOVES EVEN FURTHER, THE DRIVER WILL REQUIRE MUCH HIGHER EFFORT TO TURN LEFT AND MAY NOT BE ABLE TO TURN THE WHEEL AS MUCH AS INTENDED. WITH THE MAXIMUM PINION SHAFT MOVEMENT, WHICH REQUIRES INTERNAL GEAR COMPONENT DAMAGE, THE DRIVER CAN ENCOUNTER HIGH RESISTANCE TO TURNING LEFT, FOLLOWED BY UNINTENDED POWER ASSIST TO THE RIGHT. IN ANY OF THESE CONDITIONS, A CRASH COULD OCCUR.
Remedy: DEALERS WILL INSTALL A NEW LOWER PINION BEARING UNLESS INSPECT OF THE EXISTING BEARING INDICATES THAT REPLACEMENT OF THE GEAR ASSEMBLY IS NECESSARY. OWNER NOTIFICATION BEGAN ON FEBRUARY 5, 2004. OWNERS SHOULD CONTACT BUICK AT 1-866-608-8080; CHEVROLET AT 1-800-630-2438; OLDSMOBILE AT 1-800-630-6537; OR PONTIAC AT 1-800-620-7668.
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE WINDSHIELD WIPERS MAY STOP WORKING DUE TO A SEPARATION BETWEEN THE DRIVE PIN AND CRESCENT IN THE CRANK ARM ASSEMBLY.
Consequence: DRIVER VISIBILITY COULD BE REDUCED, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL INSPECT THESE VEHICLES FOR THE PRESENCE OF A PLASTIC WATER DEFLECTOR AND, IF NECESSARY, REPLACE THE WIPER MOTOR CRANK ARM AND INSTALL A WATER DEFLECTOR. ON VEHICLES RECEIVING A REPLACEMENT CRANK ARM AND NEW WATER DEFLECTOR, DEALERS WILL ALSO APPLY ADDITIONAL SEALING MATERIAL TO IMPROVE WATER DEFLECTION AWAY FROM THE CRANK ARM ASSEMBLY AND WILL INSTALL A REINFORCEMENT TO IMPROVE THE PERFORMANCE OF THE WIPER PARK MECHANISM.
EXTERIOR LIGHTING:HEADLIGHTS · 98V102000
1998-05-15
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE OWNER MANUALS DO NOT CONTAIN THE REQUIREMENT INFORMATION PERTAINING TO THE VEHICLE HEADLAMP AIMING DEVICE. THIS DOES NOT COMPLY WITH REQUIREMENTS OF FMVSS NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT."
Consequence: IF THE HEADLAMP ASSEMBLIES ARE REPLACED, CUSTOMERS MAY NOT BE ABLE TO PROPERLY AIM THE HEADLIGHTS.
Remedy: OWNERS WILL BE MAILED AN OWNER MANUAL'S INSERT WHICH CONTAINS THE APPROPRIATE INFORMATION.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS · 97V223000
1997-11-14
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE RIGHT FRONT BRAKE PIPE CAN CONTACT THE PIOWER STEERING ASSEMBLY CAUSING THE BRAKE LINE TO WEAR THROUGH.
Consequence: THIS CONDITION CAN RESULT IN THE LOSS OF BRAKE FLUID AND EVENTUAL LOSS OF HALF OF THE VEHICLE BRAKE SYSTEM.
Remedy: DEALERS WILL INSPECT FOR PROPER CLEARANCE BETWEEN THE BRAKE LINE AND POWER STEERING ASSEMBLY. ASSEMBLIES FOUND TO BE OUT OF POSITION WILL BE REPOSITIONED AND ALL ASSEMBLIES SECURED TO MAINTAIN PROPER CLEARANCES. ADDITIONALLY, THOSE BRAKE LINES FOUND TO HAVE BEEN DAMAGED WILL BE REPLACED AND PROPERLY ROUTED.
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