How To Get To Horns On Nbs ?

[GaBoy]

Anyone know how to get to the horns on the NBS ? I bought a "Bad Boy" horn to go on my 2008 GMC but I didn't think it would be any problem hooking it up 'til I looked for the horns. Seems like they are somewhere under the headlights? Thanks for your help.

[jrrod2004]

There are two:

 

 

 

Service Information

 

2008 Chevrolet Silverado - 2WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 1830853 Horn Replacement - Left Side (GMC)

 

Callout

 

Component Name

 

 

Preliminary Procedure

Remove the front bumper fascia trim cap. Refer to Front Bumper Fascia Trim Cap Replacement .

 

1

 

Left Side Horn Bolt

 

Notice: Refer to Fastener Notice in the Preface section.

 

Tighten

9 N·m (80 lb in)

 

2

 

Left Side Horn

 

Tip

Disconnect the electrical connector.

 

© 2008 General Motors Corporation. All rights reserved.

[jrrod2004]

Service Information

 

2008 Chevrolet Silverado - 2WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 1830855 Horn Replacement - Right Side (GMC)

 

Callout

 

Component Name

 

 

Preliminary Procedure

Remove the front bumper fascia trim cap. Refer to Front Bumper Fascia Trim Cap Replacement .

 

1

 

Right Side Horn Bolt

 

Notice: Refer to Fastener Notice in the Preface section.

 

Tighten

9 N·m (80 lb in)

 

2

 

Right Side Horn

 

Tip

Disconnect the electrical connector.

 

© 2008 General Motors Corporation. All rights reserved.

[jrrod2004]

Service Information

 

2008 Chevrolet Silverado - 2WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 1828083 Front Bumper Fascia Trim Cap Replacement (GMC)

 

Callout

 

Component Name

 

 

Preliminary Procedures

1. Remove the front wheelhouse liner - right side. Refer to Front Wheelhouse Liner Replacement - Right Side
   
2. Remove the front wheelhouse liner - left side . Refer to Front Wheelhouse Liner Replacement - Left Side
   

1

 

Front Bumper Fascia Trim Cap Bolt (Qty: 4)

 

Notice: Refer to Fastener Notice in the Preface section.

 

Tighten

10 N·m (89 lb in)

 

2

 

Front Bumper Fascia Trim Cap

 

 

Procedure

1. Pull gently on the sides of the front bumper fascia trim cap outwards to disengage from the front fenders.
   
2. Transfer parts as needed.
   
3. Disconnect any electrical connectors.
   

© 2008 General Motors Corporation. All rights reserved.

[jrrod2004]

Service Information

 

2008 Chevrolet Silverado - 2WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 1838429 Front Wheelhouse Liner Replacement - Right Side (GMC)

 

Callout

 

Component Name

 

 

Preliminary Procedure

Remove the tire/wheel assembly. Refer to Tire and Wheel Removal and Installation .

 

1

 

Right Side Front Wheelhouse Liner Screw (Qty: 5)

 

Notice: Refer to Fastener Notice in the Preface section.

 

Tighten

2.5 N·m (22 lb in)

 

2

 

Right Side Front Wheelhouse Liner Plastic Retainer (Qty: 9)

 

3

 

Right Side Front Wheelhouse Liner

 

Tip

 

 

• Disconnect any electrical harnesses/connectors and attached parts from the right side front wheelhouse liner as needed.

 

 

• Use the reverse procedure to install to help with the proper alignment of the right side front wheelhouse liner.

 

© 2008 General Motors Corporation. All rights reserved.

[jrrod2004]

Service Information

 

2008 Chevrolet Silverado - 2WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 1838425 Front Wheelhouse Liner Replacement - Left Side (GMC)

 

Callout

 

Component Name

 

 

Preliminary Procedure

Remove the tire/wheel assembly. Refer to Tire and Wheel Removal and Installation .

 

1

 

Left Side Front Wheelhouse Liner Screw (Qty: 5)

 

Notice: Refer to Fastener Notice in the Preface section.

 

Tighten

2.5 N·m (22 lb in)

 

2

 

Left Side Front Wheelhouse Liner Plastic Retainer (Qty: 8)

 

3

 

Left Side Front Wheelhouse Liner

 

Tip

 

 

• Disconnect any electrical harnesses/connectors and attached parts from the left side front wheelhouse liner as needed.

 

 

• Use the reverse procedure to install to help with the proper alignment of the left side front wheelhouse liner.

 

© 2008 General Motors Corporation. All rights reserved.

[Tucson_02Silverado]

On the right (passenger) side, easy access from underneath.

The left side is much more difficult, at least it looks like it as I haven't had to ever change that horn out.

Someone that has changed/remove the left side will chime in.

Just looking at it, it looks like removal of the grill, headlight and turn light assemblies and the washer tank.

 

I have basically the same horn that you have, Stebel Nautilus. My right horn went out and, like yourself, I was going to replace both OEM horns with just the one Stebel. I removed the right OEM horn, cut off the OEM horn the metripack connector, created a pigtail to connect the Stebel back to the OEM harness connector. I then tried the new horn. With the left OEM and the Stebel on the right, sounds really good. I also reused the right OEM horn brackt to mount the Stebel horn. Other thing I noticed, that since the Stebel is an air horn, there is a very slight delay for anything audible. With the left OEM horn still hooked up, the "chirp" from the basic content alarm still works whereas with just the Stebel, you never hear anything.

 

I see Mike posted diagrams for access.

[GaBoy]

On the right (passenger) side, easy access from underneath.

The left side is much more difficult, at least it looks like it as I haven't had to ever change that horn out.

Someone that has changed/remove the left side will chime in.

Just looking at it, it looks like removal of the grill, headlight and turn light assemblies and the washer tank.

 

 

Thanks for the replies - looks like a real PIA to mess with. I'll have to study on it for a while.

[tobias]

Welcome to the site!

 

GeorgiaBoy might catch you a little less hell around here!

[Tucson_02Silverado]

Oh......I just looked at NBS in the post, not your profile. You're asking about a NNBS and you did have 2008 in the post............so never mind about my reply. Well maybe the right side is still applicable

[tobias]

You guys holding on to NBS need to let go. NBS is NBS, OBS is OBS.

 

You have an OBS now!!!

[Tucson_02Silverado]

I have a GMT-800 series and you have a GMT-900 series. But most of us elders on this forum realized that most purchasing a GMT-900 series usually have a difficult time with any designation greater than three letters. Thus, we'll concede NBS to the GMT-900 owners, as even NNBS would have a lot of posters crying for mommy because four letters is greater than three letters and hurts thinking about it.

[GaBoy]

I have a GMT-800 series and you have a GMT-900 series. But most of us elders on this forum realized that most purchasing a GMT-900 series usually have a difficult time with any designation greater than three letters. Thus, we'll concede NBS to the GMT-900 owners, as even NNBS would have a lot of posters crying for mommy because four letters is greater than three letters and hurts thinking about it.

 

 

"NBS;NNBS;GMT-800;GMT-900" You guys are confusing me! Yes, I'm easily confused at times.

[jrrod2004]

"NBS;NNBS;GMT-800;GMT-900" You guys are confusing me! Yes, I'm easily confused at times.

 

That is why it is easier for me to stick with GMT400, GMT800, GMT900 when posting or asking questions.....

[jbannick18]

"NBS;NNBS;GMT-800;GMT-900" You guys are confusing me! Yes, I'm easily confused at times.

 

That is why it is easier for me to stick with GMT400, GMT800, GMT900 when posting or asking questions.....

 

 

 

Im probably going to get a new horn for my truck as well, my silverado had a nice horn but this gmc... well it sounds like a small car horn