In the past 15months I have have replaced my battery and had to have computer in car reset because of the battery going completely dead (thats what I was told) I have had 2 tune-ups, replaced the o2 Sensors, bank 1 & 2 sensors replaced (is this same as o2 sensors) and replaced mass airflow sensor and have regular oil changes but my 2000 6cyl. Galant runs horrible. My car stalls all the time when idle and after pumping gas, no matter if tank is 1/2 full or on E, I have difficulty getting my car started. It stalls several times before I can keep it going. It stalls when sitting idle in traffic. Help! I am putting too much money in this car that I really do like otherwise. When it runs properly, I love my car.

did a hard reset of main computer cables ????? What are you talking about ? That won't do anything , you need to take it to the dealer where they can hook up factory scanner ,you have no ideal of the complexity of the computer systems .

If you are sure the alternator is ok then the battery is dead......replace the battery!

Not on this year of car.

Were the batteries you change completely dead or not? If they were dead,means that the ECU of your Gear box lost memories and need to get reset. Ask an expert and qualified garage fo it.

I'll try to help, everytime something gets replaced on these yukons, that circuit needs to be RESET ! Is there a reset button, on your steering wheel, to reset a variety of functions ? , check owners manual, or call your dealer for better advise

If the battery is completely dead you should buy a new one. Batteries get damaged when they completely discharge. Just put in the new one and start. You might have the emission light go on after a start from a dead battery. Reset it yourself with an OBDII tool or your dealer can reset it. You can drive there at least on your own this way.

go again to the dealer or at any gm service center with complete tools and computer diagnostics, by using tech2 find out all the code history, and freeze frame failure record. if no diagnostic code read, there are some program that delete or disabled that cant read by the diagnostic, hptuners will help you for that, read the vehicle data by hp tuners and reset it to original program, review all dtcs that cancelled specially to charging syatem, after reseting, diagnose it again and you can read the trouble codes to perform in rapair

It is typical after diconnecting the battery/ dead battery, most of the time it takes about 10 miles for the computer to reprogram, or the prom is not reading at the computer, go to a shop and this can be replaced without replacing the complete computer

This just means that the OBD was reset recently and the car hasnt been driven enough for readings to be given by the OBDII. Just drive the car a while, and then all should be READY. After any OBDII reset, the car must go through a certain number of "Drive Cycles" before the OBDII will emit any readings. Refer to the manufacturer to find out exactly how many, and how to complete them.

Are Lexus' known for the computer resetting when replacing the battery? If your really worried that the computer will reset... OK, hold on. First let me say that I don't think the computer is going to reset although I have heard of a few instances where "prolonged" time without any power to the computer will cause it to have to be re-initialized by a dealership technician. I give you my advice with great caution. Please, if you do not feel completely confident doing this, then please don't. Here it goes: Use jumper cables to connect your Lexus battery terminals to another vehicles battery. Carefully remove your old battery being careful not to let the positive terminal contact anything conductive, maybe rap it in a plastic bag and duct tape or something. When you install the new battery, connect the negative terminal before the positive. Good luck and please be careful. If you are a smoker, never smoke near an automobile battery... they have been known to explode.