The 1999 Intrigue with the 3.5L V6 (LX5) is a competent FWD sedan undermined by catastrophic engine design flaws and transmission cooling issues that typically surface between 60,000-120,000 miles, making it a financial gamble for used buyers.
3.5L V6 Lower Intake Manifold Gasket Failure Leading to Coolant Intrusion and Engine Destruction
Common · high severity
Typical onset: 60,000-120,000 mi
Symptoms: White smoke from exhaust, especially on cold starts, Rapid coolant loss with no external leaks, Milky oil on dipstick or oil cap, Overheating and eventual catastrophic bearing failure if driven after coolant mixes with oil
Fix: Lower intake manifold gaskets fail due to Dex-Cool corrosion, allowing coolant into crankcase. If caught early: 6-8 hours labor for gasket replacement, upper/lower intake removal, coolant flush. If driven after contamination: complete engine rebuild or replacement required (25-35 hours labor). Many engines are scrapped at this point because bearing damage is extensive.
Estimated cost: $800-1,200 gaskets only; $3,500-5,500 for short block or used engine swap
4T65-E Transmission Oil Cooler Line Failure at Radiator
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: Transmission fluid in coolant reservoir (strawberry milkshake appearance), Coolant in transmission (causes slipping, delayed engagement), Sudden transmission failure after mixing fluids, Leaking pink fluid near radiator
Fix: Steel cooler lines corrode where they connect to radiator, or internal radiator seal fails, cross-contaminating fluids. Requires radiator replacement, both cooler lines, complete transmission fluid flush (sometimes external cooler install), and if contamination occurred: transmission rebuild. This is a ticking time bomb on these — 4-6 hours for preventive line/radiator replacement, 15-20 hours if transmission is damaged.
Estimated cost: $600-900 preventive; $2,200-3,800 with transmission rebuild
Front Engine Mount (Torque Strut) Failure
Common · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: Severe clunking on acceleration or deceleration, Vibration felt through steering wheel and shifter, Engine rocking visibly when revved in park, Transmission linkage binding or difficult shifting
Fix: The hydraulic front torque strut mount fails, allowing excessive engine movement. Common enough that we keep these in stock. Replacement is 1.5-2 hours including subframe access. Use OEM or quality aftermarket — cheap mounts fail within a year.
Estimated cost: $250-400
Ignition Control Module and Crankshaft Position Sensor Heat Failure
Occasional · high severity
Typical onset: any mileage, heat-cycle dependent
Symptoms: No-start when engine is hot, starts fine when cold, Stalling after 20-30 minutes of driving, restarts after cooling, Intermittent tach dropout while driving, No spark condition appearing randomly
Fix: ICM mounted behind coil packs overheats and fails, or crank sensor develops internal cracks from heat cycling. ICM replacement is 1.5 hours (remove upper intake plenum for access). Crank sensor is 1 hour but requires raising engine slightly. Both are common enough that we replace them together if one fails on high-mileage cars.
Estimated cost: $300-550 for both components
Power Steering Pressure Hose Burst
Occasional · medium severity
Typical onset: 100,000-140,000 mi
Symptoms: Sudden loss of power steering assist, Power steering fluid spraying onto exhaust manifold (smoke, burning smell), Whining pump noise before failure, Fluid pooling under engine bay
Fix: High-pressure hose from pump to rack deteriorates internally then bursts, usually while turning at low speed. This is a GM recall item on some models but not consistently applied. Hose replacement is 1.5-2 hours due to routing around engine. Always inspect hose condition during any underhood service on these — it's a when-not-if failure.
Estimated cost: $250-400
Rear Suspension Trailing Arm Bushing Deterioration
Common · low severity
Typical onset: 80,000-130,000 mi
Symptoms: Clunking over bumps from rear, Rear-end wander or loose feeling on highway, Uneven rear tire wear (inside edge), Visible cracking or separation of rubber bushings during inspection
Fix: Trailing arm bushings use pressed-in design that separates with age. Requires control arm removal and press work, or whole arm replacement if bushings aren't available separately. 2.5-3 hours labor per side, alignment required. Not safety-critical immediately but degrades handling significantly.
Estimated cost: $400-650 both sides with alignment
Owner tips
Flush and replace Dex-Cool coolant with conventional green coolant at 60k to slow intake gasket corrosion — many techs do this conversion preemptively
Inspect transmission cooler lines and radiator for any seepage every oil change after 80k miles; replacing lines preventively is far cheaper than a transmission
Use semi-synthetic or synthetic oil and keep changes at 3,500-4,000 miles if lower intake gaskets haven't been done — contaminated oil kills these engines fast
When replacing intake gaskets, install updated Felpro or Mahle metal-core gaskets, never reuse OEM composite gaskets
Check engine mount condition during any major service — a failed mount accelerates accessory and transmission linkage wear
Only consider if you can verify both intake gaskets and transmission cooler lines have been replaced in the last 30,000 miles and you have a $2,000 emergency fund for when something else grenades — otherwise walk away.
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.
ELECTRICAL SYSTEM:IGNITION · 14V400000
2014-07-03
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring.
General Motors LLC (GM) notified the agency on July 3, 2014, that they are recalling 5,877,718 model year 2000-2005 Chevrolet Impala and Monte Carlo, 1997-2003 Chevrolet Malibu, 2004-2005 Malibu Classic, 1999-2004 Oldsmobile Alero, 1998-2002 Oldsmobile Intrigue, 1999-2005 Pontiac Grand Am and 2004-2008 Pontiac Grand Prix vehicles. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.
Consequence: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury.
Remedy: GM will notify owners, and dealers will install two key rings and an insert in the key slot or a cover over the key head on all ignition keys, free of charge. The recall began on September 9, 2014. GM's number for this recall is 14350.
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.
STEERING · 08E063000
2008-10-17
DORMAN PRODUCTS IS RECALLING 3,900 INTERMEDIATE STEERING SHAFTS DORMAN PART NOS. 425-151, 425-152, AND 425-153, (SOLD UNDER DORMAN'S "OE SOLUTIONS" BRAND NAME), BALKAMP #'S 7-3057, 7-3058, 7-3059 (SOLD UNDER THE "NAPA" BRAND NAME), AND PLATINUM PARTS #'S 2425151, 2425152, AND 2425153 MANUFACTURED DURING THE MONTH OF SEPTEMBER 2007. THESE REPLACEMENT STEERING SHAFTS CAN BE USED ON THE VEHICLES LISTED ABOVE. THE WELD CONNECTING THE INNER TUBE TO THE OUTER TUBE MAY BE DEFECTIVE.
Consequence: IF THE WELD FAILS, LOSS OF STEERING COULD RESULT, POSSIBLY RESULTING IN A VEHICLE CRASH.
Remedy: DORMAN WILL NOTIFY OWNERS AND REPLACE THE STEERING SHAFTS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 16, 2008. OWNERS MAY CONTACT DORMAN TOLL FREE AT 1-800-523-2492.
SEAT BELTS · 00V044000
2000-02-16 · EA99019
VEHICLE DESCRIPTION: PASSENGER VEHICLES. SOME OF THESE VEHICLES WERE BUILT WITH REAR SEAT SHOULDER BELTS THAT COULD TWIST, ALLOWING THE WEBBING TO BE JAMMED IN THE RETRACTOR. WHEN THE SHOULDER BELT WEBBING BECOMES JAMMED IN THE RETRACTOR, THE SEAT BELT BECOMES UNUSABLE.
Consequence: THIS COULD PREVENT A PERSON FROM USING THE SEAT BELT SYSTEM, AND A RISK OF INJURY TO AN UNBELTED PERSON IN A CRASH WOULD BE INCREASED.
Remedy: DEALERS WILL REMOVE ANY TWISTS FROM THE REAR SHOULDER BELT(S) AND INSTALL CLIPS TO THE BELT WEB GUIDE TO PREVENT TWISTING.
ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS · 98V241000
1998-10-05
VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH A 3.8L V6 ENGINE. SOME OF THESE VEHICLES WERE BUILT WITHOUT A HEATER HOSE CLIP WHICH COULD ALLOW THE HOSE TO SAG AND CONTACT THE OXYGEN SENSOR RESULTING IN A COOLANT LEAK.
Consequence: IF A COOLANT LEAK WERE TO OCCUR, AND LEAKING COOLANT CONTACTED THE HOT EXHAUST MANIFOLD, AN ENGINE COMPARTMENT FIRE COULD RESULT.
Remedy: DEALERS WILL INSTALL A HEATER HOSE CLIP.
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.
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