2003 Tahoe..No crank: neutral safety switch test and adjustment

[silky28]

hey all,

So finally got the transmission in and all the broken things fixed. Now she won’t crank. I got it to start by jumping the starter and she started up instantly...but she won’t crank with the key.

I put a new neutral safety switch in so I assume that is either bad or out of adjustment. The gear indicator display is, however correct, the only problem is that there is sometimes a delay between park and neutral.

Do I have this right - to adjust the safety switch I have to loosen the two bolts and pivot the back side while someone cranks with the key? Before I do that can I just check that it is a switch problem? Can I jump power to the wire that goes to the starter relay and if I can then crank I would know it’s a sensor problem?

 

[OR VietVet]

You posted in the 2021 section and I am completely confused. What year is your rig? Is under warranty if is a 2021.

 

[silky28]

It is an 03 meant to post it in corresponding forum...can you move it?

 

[OR VietVet]

I can't move it.

 

[drakon543]

i know the 96-99 had some adjustment to them i dont know about your year. ill also ask did you replace it with an acdelco unit or cheap aftermarket. i did my 97 with a cheap aftermarket and it was basically showing signs of a bad switch immediately.

 

[OR VietVet]

2003 what? Please give details. You also said you replaced the neutral safety switch. Will it start/crank over in any gear selection besides Park? How about the ignition switch?

Look at this video and start at 2:20 in to see adjustment procedure:

 

[silky28]

It's an 03 Tahoe Z71 5.3 4x4.

Yes it is a new switch, not it is not AC delco. Got what I could get locally. The gear shift indicator works fine, other than there is sometimes a delay between when I go between R and P. It won't crank in any gear at all. I can get it to crank and run by jumping the the starter relay. Problem is between key switch and starter relay...all it can really be is a fuse, the key switch or the nuetral safety switch.

 

[OR VietVet]

Did you try the adjusting process in the video? You asked for the "how do I do it" and I supplied a video for you but now no info back about whether you tried it or not.

 

[silky28]

Well first off, calm down. Second, I’d seen that video before and all had asked was for verification if I had it right. Third...things get done when they do.

As for the switch, I removed the big connector and tried in every position to get it to crank. No dice. Then. I noticed that the green wire from the big connector has pulled out of the clip. That wire is, apparently, one of the wires needed to start. I tried jumping the wire but no dice. So now I will have to get that wire back in the clip before trying again.