I have a 2001 cadillac seville sls and sometimes it shuts off when i start to accelerate then i have to put the car in park to start it again and pull off until it does it again.

Would be worth checking for a restricted exhaust gas flow. Cats sometimes get partially blocked.

If that is ok. I suggest you ask your question again.

Check fuel filter.

Something inside the transmission. TCC solenoid/valve could be a cause. Have the codes checked, even if the check engine light isn't on.

I have your answer in my marketplace.

Well, the first thing one should check is the transmission fluid level. Add Dexron ATF to the transmission until full when the vehicle is at normal operating temperature after 30 or 40 minutes of driving.

Secondly, if the car's transmission hasn't been flushed and filled in 30,000 mi. it's recommended that you do so as normal maintenance. This service typically costs about $100 or so.

If the car only runs forward but not reverse, a solenoid may be plugged up with clutch dust, or it's shorted out and needs to be replaced. However, tearing down a transmission on a 2001 Cadillac Seville is rather expensive, in the thousands of dollars.

One might consider getting a good used transmission that has a guarantee on it and have it installed, or have the one in it rebuilt.

Good luck on this repair.

There is no cleaning a throttle position sensor.It is bad,or good,

never come across this before and i would need to see the engine layout to work out what could be causing it but if its low oil pressure then add a tin of STP or wynns and see what happens

only way is a odb2 scanner. ez pawn sells them for $50. or sears sells them for around $75

Most likely the safety feature built into the brake switch. Check to see if the brake lights come on when you step onthe brake. If not, it's likely the bad brake switch preventing you from putting the car into gear. If this is not the case, then you have a security issue and should try a different key to start the car.

Put your parking brake on. Remove console panel. Put foot on brake. Turn ignition key to on position (Do NOT start vehicle!). Locate park lock cable (Parallel to drivers right knee). Press down on that cable with left hand while attempting to move shifter with right hand. Replace that cable if shifter moves out of park.