Turn Signal Stays On 1999 Silverado

[homewerx]

The other day when i got in my truck I noticed the right turn signal light by the odometer stayed on. I checked the turn signal switch (lever) and it was fine. The left turn signal works fine. So I got out and then noticed that the front and rear right side turn lights were also on and would not turn off. It does not flas whe you lift the lever up also. I changed all the bulbs and it is still doing it. Anyone know what might be the problem?

[Lincoln30]

It's probably a bad relay.

[zxcv]

Yup, the problem is that your lights aren't blinking!

 

 

 

Haha.

 

 

 

It's the turn signal modulator or whatever it's called. It's in the wiring under the steering column - it is the piece that pulses the current to make the lights blink. I had the same problem in my old Buick Lesabre. I just changed out the part within 3 minutes and it was working fine again.

 

 

edit: not "turn signal modulator" -- RELAY sounds better. I'm dumb.

[homewerx]

ok.....so it may be under the stearing column. Anybody else been in this area? I see just 2 screws holding the bottom cover on. Should it be right there?

[jrrod2004]

Its actually called a flasher, I will post the diagrams in a minute

[jrrod2004]

Service Information

 

1999 Chevrolet Chevy C Silverado - 2WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 367914 Knee Bolster Replacement

Removal Procedure

 

1. 
   
    
   
2. Remove the instrument panel (IP) left side trim panel.
   
    
   
3. Remove the IP cluster trim plate bezel. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement .
   
    
   
4. Remove the knee bolster screws.
   
5. Unsnap the knee bolster.
   

Installation Procedure

 

1. 
   
    
   
2. Snap the knee bolster into the IP assembly.
   
3. Install the knee bolster screws.Tighten
   Tighten the screws to 2 N·m(18 lb in).
    
    
   
    
   
4. Install the IP cluster trim plate bezel. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement .
   
    
   
5. Install the IP left side trim panel.
   

© 2008 General Motors Corporation. All rights reserved.

[jrrod2004]

Service Information

 

1999 Chevrolet Chevy C Silverado - 2WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 786377 Hazard and Turn Signal Flasher Replacement

Removal Procedure

 

1. Remove the knee bolster. Refer to Knee Bolster Replacement in Instrument Panel, Gages and Console.
   
    
   
2. On the back side of the fuse block release the retainer while pulling the flasher (1) outwards.
   
3. Remove the flasher (1) from the fuse block.
   

Installation Procedure

 

1. 
   
    
   
2. Install the flasher (1) to the fuse block until the retainer clicks into place.
   
3. Install the knee bolster. Refer to Knee Bolster Replacement in Instrument Panel, Gages and Console.
   

© 2008 General Motors Corporation. All rights reserved.

[jrrod2004]

pretty easy, just remove the knee bolster and then pull out the flasher (make sure to release the little pin) and then replace it with a fresh one..and then put the cover back on....

[zxcv]

Just make sure your truck doesn't explode when doing that. Exploding is a known issue