Recent content by Trchamp

Pin number 20 on blue plug on pcm wire was broke orange wire. One foot down from plug behind tape. No power to computer. Cir 440. Thanks Everyone.

I do have a print out of the pcm but the wire colors dont match. is there one for my 04 trailblazer that i could use to make sure i have power to the pcm?

First Thanks for all the good data. Here is what i found out .Put a tech 2 scanner on it and we could not talk to cpm but we could talk to the BCM it said u1000 class 2 data malfunction. I put a used cpm no change. when you turn the key to start then to run the surcurity light goes off then...

Every Fuse is perfect. Front and in back. I did see online someone had same problem and he took it to the dealer and they told him that he was not getting power to passlock. Open circuit #440 does anyone have a diagram of this circuit.

Does anybody know what the passlock controls when if fails? 04 trailblazer. No start No Crank?

I check the voltage at the ignition switch and i have battery voltage on all wires on run and run start. The bell that ring some time stays on when i remove key.

I was under it and replace the neutral safety switch. i did notice when my friend was jumping the starter when i moved the shifter out of park it did stop turning over. It I think the cpu is not getting power or something. I will get a good scan too tomorrow. checked fuse 13 fine. any thing...

It has 97,000 miles on it we did try a scan reader and it would not talk to it. the check engine light does not come on when you turn the key on. it was on for awhile.

I drove it home and it was fine. When i went out Monday morning when i turned the key nothing happened. So i replace the ignition one from Napa same problem. But i did notice the back up light did not work when you put in to reverse. But when you unlock doors with remote they do come on. The gas...

Hello, can anyone tell me what wire are hot that come out of ignition switch. Start, Run Acc. Replace CPM still no start

i grounded out starter relay and it turns over. Check engine light does not come on, bu lights don't work, gas gauge does not work.

I check all the fuses. I pulled out the cpu when you turn the key to run the same thing happens. I am getting a used cpu and trying that. Will it start after i do the relearn ? i know it will need a reflash from the dealer.

I looked under the dash and behind the front area of console and do not see a ground. do i need to remove the console 2004 trailbazer.

Front or back and is it under it?

Where is the one by the shaft hump? Under dash or where thanks.