2003 Denli No Start

[Wagnasty]

2003 Yukon Denali XL. Back story: drove fine yesterday and when I went to park it and noticed that the cluster said it was in reverse and the reverse lights were on. Didn't think anything about it and shut it off. Went back later to start it and nothing. The cluster is showing reverse but the colum is shifted into park. Cycled all the gears just fine but no matter the shifter position it still showed to be in reverse. So I changed out the neutral safety switch with a new one and had the same problem so I went and got another justto be sure and iI'm still having the same problem.

 

[Wagnasty]

I should add that when you turn the key on everything else works. All the dash lights come on, radio, hvac, and everything that should. You can hear the fuel pump cycle. When you turn the key the dash just turns off and nothing. The engine doesn't even try to turn over. But going from the key off to on for not even a second the indicator will flash into park unlocking the doors but immediately goes back to park. Has anyone had this happen?

 

[Wagnasty]

Anyone?

 

[treehan77]

Have you tested the battery

 

[Wagnasty]

Yes.

 

[FamilyTruckster]

ignition switch? or neutral safety switch?

 

[treehan77]

He said he's changed the neutral safety switch twice already.

 

[FamilyTruckster]

thats what i get for "skimming"
i'd say ign switch

 

[Wagnasty]

Soon as I turn the key on, the display on the cluster goes straight into Reverse. And I'd doesn't matter what gear you select the display still says reverse. So the computer won't allow it to start because it thinks it's in gear.

 

[FamilyTruckster]

have you disconnected the cable from the trans and manually pushed the lever forward completely into the park position and made sure the cable is in the same position/adjustment and tried from there? you may have a bunk cable...?

 

[Wagnasty]

Yes I have done that. Even tried to manually move the selector switch and had no luck. Decided to have it towed to a transmission shop today.

 

[FamilyTruckster]

Boo.... Welp, keep us posted, super curious

 

[Yukon John]

About this time I would look at a Helm's Shop Manual on this one. I have seen a similar situation on mid and late 90's models that were stolen recovery vehicles and the ignition Switch was the culprit. I think there is a complete module/assembly in the steering column that can be replaced also that may cover this.

Consider trying this : http://www.1aauto.com/steering-column-shift-control-mechanism/i/1astc00069

I'm curious about this also and will do some research.

 

[Wagnasty]

Well it's fixed. Turns out both of the neutral safety switches I put on were bad right out of the box.

 

[treehan77]

Crazy. Was the third the same brand or different. And what brand were these so indoor buy them lol

 

[Wagnasty]

First two that I put on were from autozone. I knew the quality would be questionable but 2 in a row? The third that was put on was from GM

 

[oldchev]

The vehicle "thinks" its in reverse as indicated by the gear selection indicator. Per the previous post you need to manually finish "parking" the indicator so it will start. The cable or connectors between shift lever and transmission is where I am leading to.

 

[OHSIXX]

damn...glad you got it fixed tho

 

[SLCHOE]

Sounds like the PNP switch was just out of adjustment to me. Seen it many times.

 

[Wagnasty]

I'm definitely glad to have it fixed.

well the first 2 switches that were put on, after they didn't change anything. I even manually rotated the dial on the switch and nothing changed. That's why I thought the issue was elsewhere.