1992-1999 Buick LeSabre: Reliability
Updated: 11/23/08
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Our reliability study for this generation Buick LeSabre includes details on average repair costs, manufacturer recalls, and everything you need to know to gauge the long-term reliability of this generation Buick LeSabre .
Trouble Spots
Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search
for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested
solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer,
however, we have our own expert looking at additional vehicle problems.
Automatic transmission:
The 4T60-E automatic transmission can suddenly go into neutral at highway speeds due to a problem with internal shift valves. (1995-96)
Automatic transmission:
440-T4 automatic transmissions may shift late or not upshift at all. The problem is a stuck throttle valve inside the transmission. (All years)
Automatic transmission:
4T60E transmission may drop out of drive while cruising, shift erratically, or have no second, third, or fourth gear because of a bad ground connection for the shift solenoids. (1992-94)
Coolant leak:
The 3.8-liter V6 may leak coolant into the engine from the intake manifold. A new gasket kit, revised throttle body nuts, and sealing compound is available. Redesigned manifolds are also available in the aftermarket. (1993-99)
Coolant leak:
Coolant loss via plastic intake manifold is corrected by installing upgraded manifold and gaskets plus new PCV kit. (1995-99)
Cruise control:
If the cruise control doesn't stay engaged, or drops out of cruise, the brake switch can usually be adjusted. (1992-95)
Engine knock:
Bearing knock is caused by too much clearance on the number one main bearing. (1992-94)
Engine knock and oil leak:
Models with the 3.8-liter engine are prone to excessive oil consumption often accompanied by spark knock due to failure of the valve-stem seals. (1993-95)
Engine noise:
An intermittent rattling noise at start up is often caused by automatic-transmission pump starvation or cavitation, or a sticking pressure-regulator valve. (1992-95)
Engine temperature:
Overheating and coolant loss may be due to rough surface on radiator filler neck. Neck should be sanded smooth and cap replaced. (1999-2000)
Horn:
The horn may spontaneously sound in cold weather. Airbag assembly must be replaced. (2000)
Steering noise:
The upper bearing mount in the steering column can get loose and cause a snapping or clicking, requiring a new bearing spring and turn-signal cancel cam. (1994-95)
Transmission leak:
The right front-axle seal at the automatic transaxle is prone to leak; GM issued a revised seal to correct the problem. (1992-94)
Consumer Guide® Estimated Repair Costs
This table lists costs of likely repairs for comparison with other vehicles. The
dollar amount includes the cost of the part(s) and labor (based on $50 per hour) for the
typical repair without extras or add-ons. Like the pricing information, replacement
costs can vary widely depending on region. Expect charges at a new-car dealership
to be slightly higher.
| Item Name | Repair Cost |
| A/C Compressor | $500 |
| Alternator | $195 |
| Automatic Transmission or Transaxle | $1,045 |
| Brakes | $130 |
| Constant Velocity Joints | $760 |
| Exhaust System | $470 |
| Radiator | $360 |
| Shocks and/or Struts | $840 |
| Timing Chain or Belt | $265 |
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