I have a 2000 ssei with 82,000 miles. For the last couple of days it has been stalling. The stalling usually occurs after driving for 6 miles or so and when I slow down before making a turn. The point is the car should be properly warmed up when it is stalling. Sometimes it takes several minutes before I can get the car started again. The battery is original but I believe it is still good. The car always starts back up and then runs fine for awhile. I was getting a service stability system error code before but that has stopped. It seemed as if when that error stopped the car started the stalling routine. Any advice would be great.

your car just stops?? like you turn the key off?? or does it sputter then shut down?? only with turns? or stopping at a red light?? hope not...some angry people behind u if so . I myself would take to auto zone have them check it with the scanner, have them check your batt. have u maintain your car??? oil change? tranny fluid change?? etc.... spark plugs??? im sure im missin some things to check...

My first guess would be O2 sensor, but it could be a lot of things: Bad gas, vacuum leak, etc.

that is true. but ya it can be a number of things.. try autozone or advance autos any place like that usually has free scan check and batt testing.

It just stops running like you turned off the key. It happens when I am slowing down before a turn. When I go to turn the car is dead. This has happened 6 times this month. After the first couple of times I took it to my neighborhood repair man (not a dealer). He came up with a code of PO336 CKP sensor "A" (18x/24x) out of range. He said it could be a number of things and could be expensive. He recommended going to a dealer. Well, the car stopped stalling for a few weeks so I never went to the dealer. Then it stalled 3 times yesterday and 1 time today. Thank you for your help. This website is great.

Definitely sounds like the crank position sensor has either gotten dirty or has started to go.

The CKP sensor senses the gaps in an interupter ring as ON-OFF pulses. On these S2 engines, the ring is a two stage ring. The outer ring is an 18 pulse per revolution and the inner ring is a 3 pulse per revolution. The reference to P0336 is the code for the Crank Position Sensor and specifically the 18x reference signal from the CKP sensor.

Since it is very intermittent when it happens, it could just be debri in the way of the sensor. The problem is that to get in there and clean it, you have to remove the harmonic balancer.

AllDataDIY.com shows me that the CKP sensor is P/N 10456161 and standard replacement at a dealership (book time) should be around 2.1 hours. GMPartsDirect.com confirms the P/N and shows the replacement sensor to be $24.32 + shipping.

If you have the tools (a harmonic balancer puller is a must and can be rented from most auto parts stores) and the time, it would be quite cheap to replace the sensor yourself. If you are bothering to pull the balancer, for ~$30 you could have a new sensor put in and forget about it.

Good luck and let us know how it works out.

I know this is a LITTLE late but..I had this happen on my '92 SSEi.
But for future reference...It was a bad take up pulley on the surpentine belt.
The extra drag would kill the engine at hot idle when turning the steering wheel.