[Caleb Turner]

I tried to add a push button start with you have to hold brake to start but failed so I took it all out trying to make it back stock again but now I can't shift into any gears (auto) an not im at a lost not sure what I did wrong I cut the wires under ignition switch An put them all back together but still nothing truck starts fine but can't change gears also my front windows won't go up or down

 

[RayVoy]

You have a brake interlock that prevents shifting out of Park, without applying the brake. Some are mechanical (linkage), others are electrical/mechanical (linkage and solenoid). I don't know hat you have.

No power windows, check the fuses

 

[geo1]

Double check your wiring, and triple check,no signal from brake, something is not right

 

[jasons99hoe]

maybe shorted something out during the process. did you disconnect the battery before any of this work being done. check fuses

 

[thegawd]

Check the prndl fuse.... i had an ignition switch fail that would cause the tranny to be stuck in 3rd, 6-7 tranny codes and no Speedo... replaced the switch and fixed it... these switches are not cheap i used a low mileage junkyard switch.

A blown fuse causes the same symptoms.

Al

 

[Caleb Turner]

maybe shorted something out during the process. did you disconnect the battery before any of this work being done. check fuses

No I didn't cause I was testing wires as I go one of the wires grounded itself An doesn't light up on the bulb test it's the top wire of the picture I posted looks purple that may be the problem right now currently at work trying to get info so I can tackle after work before tomorrow on the rain ch also checked fuses all good in cab and under hood not inside bad cause I put down before I started this stuppied idea

 

[thegawd]

Theres one wire associated with the tranny at the ignition switch, I believe it's pink. It goes from the ignition switch to the fuse panel in the side of the dash, maybe fuse 19, then to the tranny. It's a positive feed and should be the same voltage as the battery. All the other wires for the tranny are negative feeds that are controlled by the ecm. I would check continuity/voltage from the fuse to the plug on the tranny. I forget what pin it is but E comes to mind, find a small drill bit that fits perfectly inside for easy testing. I guess you should check and see if you have voltage at the prndl fuse first.

Check the powertrain forum for more info on the 4l60e including wiring schematics....

Al

 

[Caleb Turner]

Theres one wire associated with the tranny at the ignition switch, I believe it's pink. It goes from the ignition switch to the fuse panel in the side of the dash, maybe fuse 19, then to the tranny. It's a positive feed and should be the same voltage as the battery. All the other wires for the tranny are negative feeds that are controlled by the ecm. I would check continuity/voltage from the fuse to the plug on the tranny. I forget what pin it is but E comes to mind, find a small drill bit that fits perfectly inside for easy testing. I guess you should check and see if you have voltage at the prndl fuse first.

Check the powertrain forum for more info on the 4l60e including wiring schematics....

Al

Yeah I believe that is the wire that got ground but it's funny cause it worked then didn't work than it worked An didn't it's was off an on

 

[thegawd]

That honestly sounds like your switch is screwed... i only say that because thats exactly what I delt with for a year of troubleshooting an intermittent tranny loosing power. It would happen once a month and progressively got worse until it was constant. It didn't matter what I did nothing worked... the only variable is how the contact makes the connection inside the switch. I took my failed switch apart and saw black arcing dust (whatever thats called) on most of the contacts. This switch cannot be reassembled... believe me... im cheap and I tried. LOL.

Al

 

[thegawd]

Heres my thread on the failed ignition switch... lots of info n shyt...

http://www.gmtruckclub.com/forum/threads/limp-mode-failed-ignition-switch.1078914/#post-2516586

 

[Caleb Turner]

Yeah but it doesn't go into limp mode it doesn't even go into gear all I think a wire got grounded An fried connection somewhere

 

[thegawd]

You can't drive it period? No forward or reverse or nothing??? Ya limp mode in these trucks is 3rd gear only while in drive plus those other simple symptoms... You can manually shift 1st or 2nd no overdrive.

So.... that's all the ignition switch has to do with the tranny, something else is going on here... maybe a broken shifter cable? Mine broke right under the carpet drivers side...

Can you move the shifter?

 

[jasons99hoe]

Yeah but it doesn't go into limp mode it doesn't even go into gear all I think a wire got grounded An fried connection somewhere

the shifter cable is a manual thing not electronic. hmmmmm. if you dont have even reverse or anything i would check cable. im confused because you didnt have these problems before you cut the wires

 

[jasons99hoe]

look into what rayvoy is saying. there are some videos on youtube

 

[Caleb Turner]

You can't drive it period? No forward or reverse or nothing??? Ya limp mode in these trucks is 3rd gear only while in drive plus those other simple symptoms... You can manually shift 1st or 2nd no overdrive.

So.... that's all the ignition switch has to do with the tranny, something else is going on here... maybe a broken shifter cable? Mine broke right under the carpet drivers side...

Can you move the shifter?

Shifter moves just not into gear feels like it's stuck but has play but Ima check all wires again An check fuses an no my tranny is good cause I drive it them morning before doing anything so I'm really sure it's in the ignition switch wiring

 

[Caleb Turner]

Found out the problem.. not getting power to the brake fuse box fuse is good but bulb tested an not getting power so not sure where I go from there

 

[thegawd]

Hmm well then I would have to agree with Ray that theres a problem with the brake interlock switch. The shifter wont come out of park without pressing the brake, the brake interlock switch may just need adjusting or is faulty.

 

[Caleb Turner]

Hmm well then I would have to agree with Ray that theres a problem with the brake interlock switch. The shifter wont come out of park without pressing the brake, the brake interlock switch may just need adjusting or is faulty.

I would guess faulty due to shorting out

 

[Caleb Turner]

But is there anyway to bypass switch to see if it is the problem ?

 

[Caleb Turner]

Nevermind I watched a video an he just took it off an it works just fine now going to replace it off course but thanks everyone for help much appreciated