I am new to this forum and was hoping someone could please help me!
I have a 2005 Monte Carlo LS 3.4L
This all started about a couple of weeks ago. The first thing I noticed was that when I try to use the turn signal they wont come on or blink they just making a horrible buzzing noise coming from the hazzard switch. I proceded to replace the switch but the turn signals still dont work and they still make a buzzing noise. (Hazzards work fine)

The next thing that came up was while my car was warming up one day in the driveway it just shut off like if you just turned the key off. This happens almost every other time now.

And NOW... The car will only start in neutral! When it does start, it starts right up with no hesitation. When I try to start it in park nothing happens besides the guages and all i here is the fuel pump clicking. If I let the car stay running and shut it off after about 10 min it wont start even if its in Neutral.
There is no security light on and THE MIL light is not on either. Aslo I checked all the fuses.

I had both the alternator and battery checked there all set.
Also replaced the MAF.

I really hope someone can help me cause im getting frustrated.
Thank You in advance

 

If I'm not mistaken...

Considering it does start in Neutral, its the neutral safety switch
Either check to see if its unplugged, frayed wire or grounding out some where...Otherwise, just replace the neutral safety switch and the starting problem should be resolved.

I'm thinking its the multifunction switch for the turn signals, But I'm not sure... Or it could be that the cable on the shifter maybe stretched out and out of adjustment...

Maybe someone else will chime in on how to fix your other issues.

Thanks for joining the MCF Family.
Pls feel free when your able...To post pics of your Monte.
Feel free to join in on the conversation in our Daily Blog!

 

Thanks for the reply! Will post pick of my car as soon as this weather clears up haha.

Could you tell me where abouts the neutral safety switch is? I tried to research some but coulddnt come up with much. And how hard to replace?
Thanks for your help!

 

I agree with the neutral safety switch, it's whole propose is to prevent you from starting th's car in gear.
Also with your directional switch. If you replaced the hazard switch, the only other things in that circuit is wires a fuse and the switch on the column.
When you replaced your MAS did you put in a genuine GM part? I replaced my MAS with an aftermarket one from E-Bay, just to have to buy the dealer part for $195 a month later. Had to hold the peddle to get it to stay on when it was hot for about a minute. Then it would stay running. And it wouldn't do anything when I tried to remote start it.

 

Cool Thankss
And when replacing the MAF I did not get one from the dealer.
Going to replace the multifunction switch next and how hard is it to replace the neutral safety switch and where is it?
Thanks!

 

I think this should help...
Its the same transmission. But If your like me and not willing to get this deep into a trans....
I would consider having a professional shop handle it.



Service Information Document ID# 548011
1998 Chevrolet/Geo Monte Carlo Park/Neutral Position (PNP) Switch Replacement

Removal Procedure

1. Apply the parking brake.
2. Block the wheels.
3. Place the vehicle is the Neutral position.
4. Remove the throttle body air inlet duct. Refer to Air Cleaner Assembly Replacement in Engine Controls.
   
   
5. Remove the automatic transaxle range selector cable.
   
   
6. Remove the wiring harness connectors.
7. Remove the automatic transaxle range selector lever. Refer to Automatic Transmission Range Selector Cable Lever Replacement .
   
   
8. Remove the PNP switch mounting bolts.
9. Remove the PNP switch.

Installation Procedure

Tool Required J 41545 Park/Neutral Switch Alignment Tool

1. 
2. Verify that the shift shaft in the Neutral position.
   Important
   
   DO NOT ROTATE A NEW PNP SWITCH. A new PNP switch is pinned in the Neutral position. If the bolt holes do not align with the mounting boss on the transaxle, verify that the shaft is in the Neutral position.
   Adjust the PNP switch if the new switch has been rotated and the pin is broken or if using an old PNP switch. Refer to Park/Neutral Position (PNP) Switch Adjustment .
3. Align the flats of the shift shaft to the flats in the PNP switch.
4. Install the PNP switch to the mounting boss. Notice
   
   Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
   
5. Install the PNP switch mounting bolts. Tighten Tighten the PNP switch mounting bolts to 25 N·m (18 lb ft).
6. Install the automatic transaxle range selector lever. Refer to Automatic Transmission Range Selector Cable Lever Replacement .
   
   
7. Install the wiring harness connectors.
   
   
8. Install the automatic transaxle range selector cable.
   Important
   
   Verify that the engine starts only in the Park position or the Neutral position once the PNP switch is installed. Readjust the PNP switch and/or check the shifter and the automatic transaxle range selector lever if the engine starts in any other position. Refer to Park/Neutral Position (PNP) Switch Adjustment and/or Automatic Transmission Range Selector Cable Adjustment .
9. Install the throttle body air inlet duct. Refer to Air Cleaner Assembly Replacement in Engine Controls.
10. Remove the blocks from the wheels.
11. Disengage the parking brake.

 

I tried doing this But When I Looked On ThIs Part On MyTransmission There Is No Wires In The Area At All
That Diagram Is For The 98 Monte So That's Probably For The Dual CaM 3.4L. Not Sure But I'm Guessing The Transmission Is Going To Be Different also