Questions & Answers for: Buick LeSabre pcm plug

... integrater 128. Have found prom update. Prom # 9554. very expensive, could this be my problem? The PCM doesn't even see the O2 sensor until engine temp has reached operating temp,the vehicle goes ...

...spark plugs, changed fuel pump, whats happening... The chance of the Power Train Control Module (PCM) failing is very small, about 3% per industry research, so expert ndguy2481 is giving bad

...pcm and still same problem.. have jiggled the wires under the dash no help could this be part of the security system???? your problem must be the ignition module check to see if the plug on the side ...

...plug you said where the a/c clutch is, has two wires on it, and obviously that's the a/c clutch/compressor connector. Just for safety reminders, never apply direct 12v power to any of those plugs ...

pcm out of the same model and year and just plug it in? Used to be able to on earlier GM cars (those of the 80's), so I think you could if the part numbers on the PCM are identical. If they're

...plug from the TPS and measure reference voltage (key in RUN position) on the gray wire. It should be 5V dc. If it's not, backprobe the gray wire right at the PCM at pin 16. You should see 5-volts ...

...plug have fire. it show the word error on the dash were it suppost to said in wish gear it is The proper thing to do would be to hook up a factory or professional type scanner an check input data to ...

PCM plug. Key off and key on. If they are good, then it would have to be a data wire. No communication. Wires from plug to plug should be less than 5 ohms. They should ohm out at .5 to 1.0.ohms. Check

...plug ,coil etc. .. the flashing check engine light is to warn you that the misfire is severe enough to damage the catalytic converter ! You need to take it to a repair right away ! A new catalytic ...

...turns over fuel pump working and get has fire to the plugs Will a scan tool communicate with the PCM / ECM - engine computer ? Any DTC'S - diagnostic trouble code's ? Security light lit on the ...