1999 Pontiac Bonneville: sudden loss of power

Filed Oct 13, 2004 · Engine · 95,000 miles · LA

I had to have the intake plenum replaced on my 99 pontiac bonneville...started with vehicle hesitating on take off, RPM's accelerating very high but MPH not catching up...vehicle then backfired and loss all power...had it towed to dealer...dealer said intake plenum was warped causing coolant to possibly leak into engine...gm would not cover under warranty which cost me $1000 to correct...vehicle was fine for a month or so and started doing it again. I think its ridiculous that gm knows about this problem but refuses to take responsibilty for it as a factory problem..I would like a recall on this and my money reimbursed to me. I also think this problem should be repaired correctly with a part that won't burn up because its made of plastic. I have read on many websites complaints about this same problem but the problem is that they are complaining to the wrong people. I was recently informed that gm does not decide to put out the recall, it's really the federal safety agency that is responsible for that. My plan is to post this link on those websites and hopefully enough people will post a complaint here too and maybe we could get some reimbursement for the poorly built cars that all other consumers have purchased.

Filed Sep 8, 2004 · Engine · 90,000 miles · NY

Consumer was driving when the vehicle started back firing, lost power and stopped. The engine needed to be replaced.

Filed Jun 7, 2004 · Engine · 83,000 miles · NE

In mid may I had a authorized pontiac dealer replace the intake manifold which had ruptured after a backfire upon initial start of 1999 pontiac bonneville with a 3.8 l engine. On june 1, 2004, I was nearly near ended on interstate 80 in council bluffs as I retruned from a trip because vehicle lost power. Took to dealer and they said lower bearing was gone, meaning a new engine. I know there have been numerous consumer complaints. It's more than the cost of a new engine that I'm concerned about. With my near incident that could have resulted in serious injury to me or another party, I think it's time that gm take responsibility for these issues and a recall is gone to cover the issue.

Filed Jun 1, 2004 · Engine · TX

Without warning, my 1999 pontiac bonneville, equipped with 3.8 engine, lost power and died. The intake plenum (sitting atop the engine, and providing air and cooling of engine water, ruptured and sent water into the cylinders, and into oil pan. This identical problem occurred at 60000 miles, was repaired, and recently occurred @ 102000 miles, 5/24/04.

Filed Nov 5, 2003 · Fuel system · 12,000 miles · IL

The fuel pressure regulator failed will driving. When this occurred, the vehicle lurched forward before stopping, lost power brakes and steering. The dealership replaced the part, but the problem recurred within 12,000 miles. *ak *scc

Filed Dec 20, 2001 · Engine · IA

Engine will stall intermittently while driving at various speeds, resulting in a loss of power brakes and power steering. Dealership has examined vehicle several times, and has been unable to effectively remedy the problem. *ak the consumer stated that the vehicle stalls 33 times and power failure happen when steering becomes difficult.

Filed Oct 24, 2001 · Engine · CA

While driving vehicle will stall and lose all power. Let vehicle come to a stop,and vehicle will immediately start back up. This happens intermittently. Contacted dealer, and dealer could not fine anything wrong.

Filed Jul 3, 2001 · Engine · WI

Engine stalls for no apparent reason. It happens under just about any circumstance. The most dangerous time of failure is when turning or pulling out of driveway across traffic because of loss of power steering.

Filed Jul 10, 2000 · Engine · NJ

Vehicle shuts off or stalls. Engine check light appeared on/off, and vehicle lost all power steering & brakes. Dealer installed a monitor device to tract other conditions of the vehicle factory related problems. Also, replaced the crank sensor in hopes it would remedy the problem. Vehicle operated for a couple thousand miles & problem came back. *ak