Dtc P2761

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09-21-2007, 12:51 AM
kst3v3n

Dtc P2761

Any body have info or a trouble shoot list on this code, I can find very very little, some lists dont even mention it. TCC controler 1 circut open.

I have checked the brake switch wire and that checks good.
12v with key on and off with brake applied.

Possibly related?????????
Also have a noise at opperating temp. no noise when cold.
loudest under vehical thru bellhousing inspection hole.
A small rpm increase from idle 2-300 rpms makes the noise about 4 times faster than if it followed the increase. goes away at about 2400.( close to stall speed.

Things point towards the converter but I don't that much about them.
TCC code,
noise at temp
no noise at stall speed.
loudest at Bhouse Insp. hole

Both problems started after around the same time as the shifting problem I was having after disconnecting the MAF for diag of a different problem.

My next step, olny because I know no other is to unbolt the tconverter and see if the noise goes away, Drop the pan and look for something obvious.
TTThanks in advance for the help.
steve
09-23-2007, 09:09 PM
foggy

I will scan the info that you need for this tommorrow.
09-24-2007, 06:49 AM
kst3v3n

Ok thanks I'll be looking for it.
steve
09-24-2007, 04:42 PM
foggy

http://i17.photobucket.com/albums/b6...scan0003-1.gif
http://i17.photobucket.com/albums/b6..._/scan0001.gif
http://i17.photobucket.com/albums/b6..._/scan0005.gif
http://i17.photobucket.com/albums/b6..._/scan0006.gif
http://i17.photobucket.com/albums/b6..._/scan0007.gif
09-24-2007, 06:16 PM
kst3v3n

WOW Thanks FOGGY
09-24-2007, 08:58 PM
foggy

anytime :hshake:
12-10-2009, 08:07 AM
Nick1

Need Help!

FOGGY,

My truck is actualy forcing me to awnser "YES" to the STEP 2 of the information you gave out...

Whats IS IT???!! I am new to this, Understand at 50% exactly the following steps...

My scan tool is giving me P2761, P0753, P0758, P0740, P0785

SO I guess I'll go to step 3
Inspect the IGN 0 Fuse for an open

whats does this mean exactly...just check the fuses? and follow the steps..??
12-10-2009, 03:05 PM
Nick1

....

Yah!!! So I am liking this reasearch, I hope you (foggy) dont die tonight because you will help me resolve this problem, I booked for the garage on Dec. 21st. but will like to find the problem before it gets there...

I am stuck at step 3, I don't have the page 8-910, so I cant really say yes or no!!!

FOGGY I AM BEGGING YOU TO HELP!

will give you a cookie :)
12-16-2009, 02:45 PM
Nick1

bump
01-13-2010, 07:45 AM
Nick1

ttt
01-14-2010, 11:47 PM
txarkitekt

You try sending Randy a PM?
01-15-2010, 06:57 AM
foggy

I'll try and scan that page for you tonight.
01-16-2010, 08:39 PM
GasGuzzler

Step 3 asks is the fuse open.

Is it?

Open when discussing fuses means blown.

Is it?

If so the chart will have you search for shorts. If it's not open it will have you check the power supply circuit to the fuse for an OPEN.

Most likely you have a bad ignition switch if the fuse is OK.

Take a deep breath and don't make it harder than it is.
01-19-2010, 09:56 AM
Nick1

ttt Im still driving the 09 silverado meanwhile I wanna get the other one fixed

I unplugged all the connectors to the transmission, as well as i played with the harness..moving it from the engine to tranny..

I unplugged the battery 10 minutes, started the truck back, cleared the codes and the truck ran fine for two weeks, the same codes came back again!

no more 1-2 gear in two wheel drive, but I have the 1-2 in awd and 4x4

pretty weird!!
please help me!!
01-19-2010, 09:58 AM
Nick1

Really appreciate the confidence you guys are giving me!!! :P thanks
01-20-2010, 06:48 PM
foggy

Quote:

Originally Posted by Nick1

I am stuck at step 3, I don't have the page 8-910,

p. 8-910 just shows you what a blown fuse looks like. Follow Gasguzzler's recommendations.
01-21-2010, 01:05 PM
Nick1

Quote:

Originally Posted by GasGuzzler

Step 3 asks is the fuse open.

Is it?

Open when discussing fuses means blown.

Is it?

If so the chart will have you search for shorts. If it's not open it will have you check the power supply circuit to the fuse for an OPEN.

Most likely you have a bad ignition switch if the fuse is OK.

Take a deep breath and don't make it harder than it is.

Okay, I get it, but where are theses fuses? Can someone kind of show me where exactly are the fuses
01-21-2010, 01:06 PM
Nick1

Why would an ignition swith cause transmission silenoid codes?
01-21-2010, 01:10 PM
Nick1

Can someone find me a ignition switch off the internet...
a link or something that would direct me to buying one ...the right one..

But before I need to make sure it is the switch....
01-27-2010, 10:25 AM
Nick1

ttt
01-27-2010, 04:11 PM
kst3v3n

Nick1, I admire your tenacity!
to help you out a bit....
The info that Foggy posted a cople years ago is about all that is needed. But you will need a basic understanding of all the terms used in the DTC trouble shooting bulliten in order to resolve your problem.
Print it out and read the entire thing, not just the flow chart, a few times. Look up (google) the things that you don't understand or don't know what they are, look like or are located. Find the other diagrams that are mentioned and study those too.

The fuses are under the hood , look in your owners manual, there should be pics and drawings.

ignition switch can cause problems or DTCs with anything (not just trans) that it is failing to suppy power to.

the first part of Foggy's DTC chart explains exactly what has to be going wrong in order for your pcm to set that code.

Get a pinout of the trans plug and the computer pinout , study those and if you need to you can test the wires for shorts and opens with a five dollar multi-meter.
01-28-2010, 09:44 PM
GasGuzzler

Quote:

Originally Posted by Nick1

Why would an ignition swith cause transmission silenoid codes?

REALLY?

Do you know what the ignition switch is or does?:ma:
02-01-2010, 09:47 AM
Nick1

No I don't and seems like theres no mech. around the Ottawa region that can help me. I asked a quote to change the ignition swith and he tought It was where I stick the key in to start the truck....

If only I had the place, tools and proper manuals, I would take time to do everything myself..
02-01-2010, 11:21 AM
foggy

Quote:

Originally Posted by Nick1

No I don't and seems like theres no mech. around the Ottawa region that can help me. I asked a quote to change the ignition swith and he tought It was where I stick the key in to start the truck....

If only I had the place, tools and proper manuals, I would take time to do everything myself..

Where do you think the ignition switch is located?:duh:
02-01-2010, 11:50 AM
Nick1

EXACTLY, Im all new to this. show me where it is. If you could take 5 minutes for me and dig out some kind of link of some sort that would direct me to buying one and changing it.

A friend of mine's brother is suppose to take a look at the truck later this week, hes been saying this for a month now but he's got personnal issues going on right now (divorcing with his crazy wife)..

but like I said, if you could check this out for me....(link for ignition switch)

thanks
02-01-2010, 05:06 PM
foggy

Ok, you know where you put your key, that is your ignition switch. RockAuto Parts Catalog
02-03-2010, 07:53 AM
Nick1

Foggy... are you serious, it really is there?

Man sorry im confused here. you guys are feeding me with small pieces, it's not helping me realy much, Im a noob is all of this. i guess mecanic is not my dominant.

direct link pleasse, the link you gave me is just...for pretty much anything
02-03-2010, 08:01 AM
Nick1

is it this;

2004 CHEVROLET SILVERADO 1500 5.3L 323cid V8 FI (T) : Electrical-Switch & Relay : Ignition Starter Switch

????????????
02-06-2010, 12:23 PM
txarkitekt

Quote:

Originally Posted by GasGuzzler

Step 3 asks is the fuse open.

Is it?

Open when discussing fuses means blown.

Is it?

If so the chart will have you search for shorts. If it's not open it will have you check the power supply circuit to the fuse for an OPEN.

Most likely you have a bad ignition switch if the fuse is OK.

Take a deep breath and don't make it harder than it is.

Follow those steps. Pretty easy. The ignition fuse is under the hood along the driver's side front fender. Pop off the lid and look at the diagram for the location. Is the fuse blown? If so, replace the fuse.

Does it blow again quickly? Then you have a shorted out wire somewhere. I would use a test light or ohm meter and check to see how far back you have power from the underhood fuse panel.

If the fuse is not blown, start checking how far back you get power TO the ignition switch from the underhood fuse panel. Is the power good to the ignition switch? If so, then order you up an ignition switch and replace it. Make sure you check the integrity of the wires at the connectors to make sure

Quote:

Originally Posted by Nick1

is it this;

2004 CHEVROLET SILVERADO 1500 5.3L 323cid V8 FI (T) : Electrical-Switch & Relay : Ignition Starter Switch

????????????

Yup. Looks like it.
02-19-2010, 12:47 PM
Nick1

changed the ign. switch. checked all the fuses.. etc

torque converter was blown, changed the tranny for a brand new GM one, 3000$ total

now Ive got a loose in the transfer case, and my two U joints are to be replaced