Trac lite i was driving down the road when my service engine soon light came on and began to flash plus my trac off light came on and the car began to vibrate. now i just start it and it vibrates and those lights are on. what could be the problem?

You need to get the computer trouble codes scanned
Check engine light on Part Ricks Free Auto Repair Advice

Possible Service Engine Soon Light, Engine Stalling, or Hard Starting

Engine, May 18, 2009

RepairPal Expert Overview:
The RTV seal on the fuel system control modules may allow water to enter into the module. Water in the module can cause a short, which may cause hard starting, a crank-no start condition, or stalling, and the Service Engine Soon light may come on. If the engine stalls unexpectedly, there is an increased risk of a crash. Dealers will replace the fuel system control module free of charge. The recall began on May 18, 2009. The GM recall number is 08411.

No Engine I know of has a 1,2,3,4, fitting I am sure you have the firing order connected wrong, plus your description point to the firing order as well. Cheers, Malcolm Campbell.

did you left your gas cap loosse, well every time check engine lite is on, your vsv lite will come on has well, if check engine lite is not flashing you ok to drive it but have some one scan it asap,j you dont want a problem getting biger,
good luck

When the Service engine soon, ABS and TRAC lights are turned on at the same time the computer control units for the engine and the ABS/TRAC systems has sensed a fault in the electronic controls of the engine and/or the emission system and the ABS and Traction Control system (part of the ABS system). When this happens you will seldom feel the car engine run any different or the car drive any different. There are about 200 possible faults that turn the Check Engine light on, the fault in your car is likely a part called the VSS sensor to know for sure what the problem is you must have the system tested; Kragen and Autozone parts stores do this testing for free

It's most likely going to be the wheel speed sensor which is located at the wheel bearing. when they become disconnected or the wire breaks your abs and traction light will come on and something your check engine light.

I'm sorry to say that you will need to see a dealer or repair shop so they scan your ABS for trouble codes first and then find your problem.

It could be a loose wire under the hood or dash. Was there any smell associated with the pop-hiss? It sounds like there was a short in the main power somewhere that literally killed your engine and then let it restart under it's own momentum. Hence the blackout and reset of the main computer.

Trac is the control that doesnt let your tires spin when they are not making contact with the road. Just by having your emergency brake on will light up the trac light. It also come on with your abs. If you driving on a slick road and you jam on your brakes and the tires slide a little mine will say low track on my car.

you have a problem known to many alero and pontiac grand am cars you have a bad wheel bearing,this is a common problem with these cars and they will not do a recall on this.you need to have your front wheel bearing hubassemblies replaced its not a bad job can be done by a decent backyard mechanic but a lot cheaper then going to the dealer, just save your reciepts in case they do recall your car for this problem they will reimburse you for your cost. If you have service engine light on, trac. off light and the ABS light on the same time, you may be able to get it fixed my reprogramming the power control module (with updated software calibration).