Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello. I don't see a description of the issue your having. What's the problem your having?
it sounds like something with your shift linkage. When you say it shifts freely, does it feel like the gear selector is not connected anymore? or more like it's just sloppy and loose? If you push the gear selector in park and put a little pressure on it will the engine start then?
if it shifts without pressing the brake then you probably have a damaged shift interlock solenoid
correct. If you are able to take it out of park without pressing the brake pedal then I would suspect the shift interlock. Was that the issue you are having?
and, yes.. it would be located at the floor shifter.
Before you replaced it, did you check to see if the problem was that it was getting energized even with the brake pedal not depressed?
If that's the case, and the shift interlock isn't damaged or getting energized when it shouldn't be, then something is damaged in the shifter assembly.
I suspect what is happening is that your gear selector isn't going fully into the park position. either something is damaged in the linkage or something needs to be adjusted. That would also cause the gear selector to move without the brake pedal depressed. because it was never fully in park to begin with taking the interlock out of the equation.
If it's not fully in park, it will not start thanks to the NSS, it also will not allow you to remove the key and will also not allow the interlock to lock the selector.
I would first make sure that there isn't something out of adjustment in the linkage. That is most suspect in my mind right now.
out of adjustment or damaged somewhere in the linkage.
hold on man.... let me check something
either under the car or at the gear selector in the car. Check this TSB too.
TECHNICAL SERVICE BULLETIN
alright. just thought I would throw that out there. Your not getting fully into park, whether it's an issue in the linkage or an issue in the shifter assembly. check over the linkage good and try adjusting it. if that isn't the problem then it's in the shifter.
yes. it could still not be fully in park. hold on, i'll get you the procedure for adjusting it
you should be able to do this alone.
it could prevent it from starting, yes but all the symptoms your describing point to it not going into park. Did you say that you replaced the shift cable earlier in the conversation?
was this a problem before it was replaced?
Ok. That totally reinforces the idea that the issue is that it's not going totally into park and the problem being with the linkage and not the shifter assembly. Look over everything well. Try adjusting it again. Disconnect the cable, put it into park and see if the key goes in, out, engine starts, etc. There is something going on with the shift cable.
if you disconnect the cable, does it work normally then?
with the linkage disconnected, it's exactly the same? what i believe happened when the plastic item you spoke of broke, was the gear selector was freed up and allowed to move fully into park. Tension was released from the cable. Maybe I am confused as to what's going on?
when you disconnected the linkage, you did re'put the selector into park, correct? made sure it was fully engaged in park?
and still exhibited all the same symptoms as before?
that's probably because your transmission isn't in park and your NSS recognizes that.
neutral safety switch will prevent you from starting the car when it's not in park or neutral. It wont however cause the selector lever to move out of park without the brake pedal applied. That's the job of the shift interlock.
either the nss is out of adjustment, or the transmission not being in park. If you remove the selector cable, and manually put the transmission in park, and make sure the gear selector is also in the park position, will the truck start?
not remove it, disconnect it..
ok. I am going to open this up to the other techs. hopefully one of them will know what's up. sit tight..