Ignition switch now trans codes

Rushlowjr · #1 10-19-2004, 05:51 PM

Okay, So I found this forum and discovered how useful it is. I am now a member of this forum in search of help...
1997 Blazer 4WD LT I had all of the classic symptoms of the dreeded ignition switch gone bad. I replaced it with the help of this forum. Now after the new switch my SES light is on and the only codes that come up are for the trans., go figure because I no longer have OD or 1st gear. I have put the old ign. switch back on and the same code comes up. Please help me. This is my work truck and my only vehicle.

Mikado14 · #2 10-19-2004, 06:00 PM

First of all, you should have left the ignition switch in the vehicle after you changed it out. Why would you remove it after installing? You should read the codes OR disconnect the battery cables for 10 minutes or longer to reset the PCM then see if you still have the codes.

Rushlowjr · #3 10-19-2004, 06:10 PM

Quote:

Originally Posted by Mikado14

First of all, you should have left the ignition switch in the vehicle after you changed it out. Why would you remove it after installing? You should read the codes OR disconnect the battery cables for 10 minutes or longer to reset the PCM then see if you still have the codes.

I called GM service and explained what is happening. They told me right off without hesitation that it was the ign. switch. They have seen the same problem and have rebuilt a couple of trans. only to find out it was the damn switch. That is why I tried the old one again. Keep in mind I did not have any trans problems with the old one to begin with. After I put the new one in is when the trans started acting up.

BlazerLT · #4 10-19-2004, 06:17 PM

Reset the computer by removing the negative and positive battery terminal while you are doing this.

Rushlowjr · #5 10-19-2004, 06:18 PM

did that already and there was no change

BlazerLT · #6 10-19-2004, 06:22 PM

Ok, well, you need to put the new switch back in there. Having the old faulty switch still in there solves nothing.

What are the codes you are getting, we need the exact numbers.

Rushlowjr · #7 10-19-2004, 06:25 PM

I don't remember exact numbers because I am a dumb ass and just went to Auto Zone. sorry guys... I received codes regaurding selonoid a and b

barpat96 · #8 10-19-2004, 06:27 PM

same thing happened to me. I had 5 codes

Rushlowjr · #9 10-19-2004, 06:29 PM

I know it is something electrical. I don't think that the damn selonoids would have gone bad sitting in the garage for 4 hours. It doesn't make much sense.

barpat96 · #10 10-19-2004, 06:33 PM

Here is the codes i got P0758 solenoid B,P0753 Solenoid A, P0785 Shift timing solenoid, P0740 Torque converter clutch, P1860 Transfer case contact plate D. The autozone employee said that my tranny was bad. It turned out to be the ignition box (Black Box) I know you don't have the codes but i put this on here for reference later

Rushlowjr · #11 10-19-2004, 06:34 PM

What do you mean by ignition "box"

barpat96 · #12 10-19-2004, 06:37 PM

under the key hole there is a black box that is connected to wires. The box can not be changed without replaceing the wire hrness that is attached. Is this what u did?

Rushlowjr · #13 10-19-2004, 06:41 PM

Yes, I bought the Wells brand from AutoZone.

Mikado14 · #14 10-19-2004, 06:46 PM

When you changed the ignition switch, on the part that has the 10mm bolt (this bolt is used to pull the connectors together and maintain a firm seat) on it, there are two plugs on either side that are a part of the entire socket, they slide down and snap in place, one is gray and one is black.

Do you have them seated all the way?

barpat96 · #15 10-19-2004, 06:48 PM

here is a picture.
http://www.smpcorp.com/mycgi/ibg.asp?parts=US295
Just wanted to make sure we are on the same page

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