2004 Buick LeSabre Engine Control Module (ECM) can fail

The Engine Control Module (ECM) can fail causing stalling, and engine and transmission drivability concerns.

Affected Model Years

This issue affects Buick LeSabre model years 1990, 1991, 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2004, .

70 people reported this problem

  • 2004 118,000 Miles
    replaced fuel pump, regulator, ignition modules, TPS, MAP,Plugs and wires,temp sensor, IAC. Car has a miss 90% of he time. acceleration power is in busts, but the engine smooths out, Some times the chime freaks out for no aperant reason while driving. Some times when accelerating from a stop right around 50 mph it acts like you let let off the throttle, it dont die but wont go. you let off the throttle and back on, its fine. changing ECM next.

  • 2004 0 Miles
    car just turns over but dont seem to be firing

  • 2004 269,229 Miles
    Driving down the road and lost all power,steering wheel barely moved but radio stayed on,got it towed. Replaced fuel pump and relays,but it still isn't getting power or fuel pressure like when you turn the key it tries to turn over but it doesn't and idk what it could be. I've been told computer,fuse length or ignition switch because of the chip in key.any suggestions are greatly appreciated

  • 2004 121,293 Miles
    Had to be towed again to have this module replaced for the THIRD time on Sept. 10 Car just quits in themiddle of the street or wherever. Very dangerous! Module is waranteed for a year...only last 5 months or less.

  • 2004 196,000 Miles
    The problem isn't repaired. I found out from a repair bill in 1/10/12 that I possible problems with Engine Module Control (EMC). But I never had it repaired. But now I am having problems with engine going off and back on while driving it. I have to warm up my engine before my transmission will run normally. It only takes a minute. That could be the problem with my engine.

  • 2004 180,000 Miles
    Car won't turn over. Replaced the battery & everything lites up. But nothing from the engine.

  • 2004 189,000 Miles
    Stalls idling in park , sitting at a stop in gear, pulling out, driving 60mph just shuts off, usually starts right back up also acts like an miss at times driving

  • 2004 138,000 Miles
    car studders between 30 and 50 miles an hour

  • 2004 59,500 Miles
    Bad engine performance . Obd test . Car not fixed yet .

  • 2004 107,000 Miles
    A sudden crank but no start issue led me into a misdiagnosis nightmare! I replaced just about everything associated with this problem.Nothing changed. Many dollars later, I found pcm at a junkyard for $ 20.Solved the problem.

  • 2004 235,000 Miles
    Fuel mileage was down, transmission was acting weird and I didn't know what was going on until the belt tensioner went bad and required the battery being disconnected for awhile. Everything improved after the computer was reset, but within 2 weeks, it needs reset again to get things back in order, so I'm assuming the ECM needs replaced.

  • 2004 0 Miles
    car has no power to anything but battery is good.

  • 2004 80,000 Miles
    Defective cars.Not worth throwing parts at to fix,as nothing may work.Too many possibilities. SELL,SELL

  • 2004 100,000 Miles
    Start and run for two seconds then shuts off,after replacing everything the real problem was it needed new computer.

  • 2004 130 Miles
    Car runs ruff in park but rides smoth down the road

  • 2004 175,000 Miles
    Car won't start won't fire and I believe no gas is pumping but will crank and transmission has to warm up before it will drive