Need Help! Cant Find Clunk/popping 07 Nbs1500

usmc3529 · January 11, 2008

Ok, I ve had this really bad creaking/clunk/popping on the driver side while driving 10mph or under. Very noticeable while turning left slowly. Also you can from a dead stop let off the brake then re apply and you get the same popping. creaking noise. Just had the upper control arm placed two days ago and its still doing it. Links, tie rods and everything under the hood appear tight and nothings rattling. It does it when warm or when driven more than about 20 miles. Leads me to believe it might be in the steering rack or something in the steering?? Any ideas or experiences

truck is a 2007 silverado 1500 2wd ext cab 5.3 lt1 package

Im getting pissed now because the bcm has gone out,the aspirator on the celing has gone out, this issue and numerous rattles and squeaks from the dash and doors my 2003 1500 had 0 problems when i got rid of it at 57k

jrrod2004 · January 11, 2008

probably a bushing and a tie rod, mine had the exact same problem.....and one of the crossmembers was replaced as well.....

Document ID# 2006229

2006 Chevrolet Chevy C Silverado - 2WD

Subject:Snap/Popping Type Noise Coming From Front of Vehicle (Remove Bolt-In Front Crossmember and Add Washers) #03-08-61-002I - (08/27/2007)

Models:2003-2006 Cadillac Escalade

2003-2006 Chevrolet Avalanche, Suburban, Tahoe

2004-2007 Chevrolet Silverado (Classic)

2003-2006 GMC Yukon, Yukon XL

2004-2007 GMC Sierra (Classic)

2003-2008 HUMMER H2

1500 Series (½ Ton) and 2500 Series (¾ Ton) with Two-Wheel Drive

Attention: This bulletin only applies to 1500/2500 Series 2WD and HUMMER H2 vehicles with recirculating ball type steering.

This bulletin is being revised to update the parts information to include a new washer for HUMMER H2. Please discard Corporate Bulletin Number 03-08-61-002H (Section 08 -- Body and Accessories).

Condition

Some customers may comment on a snap or popping-type noise coming from the front of the vehicle. This condition is most apparent during hard left or right turns at low speeds. Going over bumps while turning may also aid in producing this noise.

Correction

Remove the bolt-in front crossmember and add washers using the procedure listed below.

Important: DO NOT slot the mounting holes on the crossmember as stated in previous bulletins. Slotting the holes has been found to be less effective and, in some cases, causes the noise condition to be more prevalent.

<LI type=1>Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI. <LI type=1>Remove the mounting nuts, bolts and the front crossmember from the vehicle. <LI type=1>Clean all the undercoating off the crossmember in the area of the mounting holes. <LI type=1>Reinstall the crossmember with the bolts and nuts. On the driver and passenger side, add washer P/N 11509592 (C/K models) or P/N 15567836 (H2), or equivalent hardened washer (see dimensions below), at each bolt head and nut location. Tighten
Tighten the bolts to 120 N·m (89 lb ft).
Apply an even coat of Anti-Corrosion Coating, P/N 12346501 (in Canada, 10952414), or equivalent, to the crossmember where removed. Overlap the original coating in order to provide an effective corrosion protection.

C/K Models

Inside Diameter

Outside Diameter

Thickness

14 mm (0.551 in)

35 mm (1.38 in)

3 mm (0.118 in)

H2

Inside Diameter

Outside Diameter

Thickness

14 mm (0.551 in)

24 mm (0.945 in)

3 mm (0.118 in)

Parts Information

Part Number

Description

Qty

11509592

(C/K Models)

Washer

8

15567836

(H2)

Washer

8

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

E1730

Crossmember, Front Suspension - Replace

Use Published Labor Operation Time

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

Document ID# 2006229

2006 Chevrolet Chevy C Silverado - 2WD Document ID# 1863912

2006 Chevrolet Chevy C Silverado - 2WD

Subject:Underbody Pop or Clunk Type Noise While Turning or Driving on Uneven Road Surfaces (Install Body Mount Insulator) #06-08-61-003A - (09/25/2006)

Models:2004-2006 Cadillac Escalade, Escalade ESV, Escalade EXT

2004-2006 Chevrolet Avalanche, Suburban, Tahoe

2004-2007 Chevrolet Silverado (Classic)

2004-2006 GMC Sierra Denali, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL

2004-2007 GMC Sierra (Classic)

2003-2007 HUMMER H2

This bulletin is being revised to add the 2003-2007 HUMMER H2. Please discard Corporate Bulletin Number 06-08-61-003 (Section 08 - Body and Accessories).

Condition

Some customers may comment on a pop or clunk type noise while turning or driving on uneven road surfaces. This noise can be heard and/or felt at either the driver's or front passenger floor pan area.

Cause

Under certain conditions, normal movement between the frame and body mount may cause this noise to occur.

Correction

Install an insulator at the right and left side #1 body mounts. The insulator should be installed between the upper portion of the body mount and the frame bracket. The #1 mount is the mount located just under the A-pillar. Use the procedure listed below.

<LI type=1>Raise the vehicle on the hoist. It is recommended to use a four-post lift or strap the vehicle frame to the hoist arms. <LI type=1>For the left side mount only, remove the intermediate park brake cable. Perform the following steps:

2.1. Remove the nut from the park brake equalizer.

2.2. Remove the intermediate cable from the equalizer.

2.3. Depress the retaining tabs that secure the park brake cable to the frame.

2.4. Pull slightly on the cable from the mounting area in order to provide slack for body movement without binding the cable.

<LI type=1>Remove all of the body mount bolts on the side being repaired. <LI type=1>Properly support the body at the #1 body mount area.

Caution: When you remove the body mount, do NOT separate the frame from the body more than is necessary. Possible personal injury and damage to multiple parts may result.

<LI type=1>Lower the chassis accordingly in order to remove the upper portion of the #1 body mount. Important: While the body mount is removed, check the underbody area that interfaces with the top of the body mount for excess build-up of E-Coat Primer or other foreign material. If the surface is not smooth use a 90 degree die grinder, or equivalent to remove the excessive build-up. Apply an anti-corrosion protection, P/N 12378398 (in Canada, 10952414), to the bare surface as necessary to prevent rusting.

<LI type=1>Install the new insulator to the bottom of the top portion of the #1 body mount. The picture shows the insulators (1) location after the body mount is reassembled. <LI type=1>Install the #1 body mount to the frame bracket. <LI type=1>Perform the following procedure before installing the bolts.

8.1. Clean the bolt threads of all the original thread locking compound.

8.2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.

8.3. Apply Threadlocker, GM P/N 12345493 (In Canada use P/N 10953488).

<LI type=1>Install the body mount bolts. Tighten
For 2003, 2004 and 2005 model year, tighten the bolts to 85 N·m (63 lb ft).

Tighten
For 2006 and 2007 model year, tighten the bolts to 100 N·m (74 lb ft).

<LI type=1>Reinstall the intermediate park brake cable. <LI type=1>Repeat steps 3-9 for the other side.

Test drive the vehicle to verify the repair.

Parts Information

Part Number

Description

Qty

15899719

Insulator, Body

2

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

E9438*

Install Insulator to #1 Body Mount

1.7 hrs

* This is a unique labor operation number for bulletin use only. It will not be published in the Labor Time Guide.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

Document ID# 1863912

2006 Chevrolet Chevy C Silverado - 2WD

usmc3529 · January 11, 2008

probably a bushing and a tie rod, mine had the exact same problem.....and one of the crossmembers was replaced as well.....

Document ID# 2006229

2006 Chevrolet Chevy C Silverado - 2WD

Subject:Snap/Popping Type Noise Coming From Front of Vehicle (Remove Bolt-In Front Crossmember and Add Washers) #03-08-61-002I - (08/27/2007)

Models:2003-2006 Cadillac Escalade

2003-2006 Chevrolet Avalanche, Suburban, Tahoe

2004-2007 Chevrolet Silverado (Classic)

2003-2006 GMC Yukon, Yukon XL

2004-2007 GMC Sierra (Classic)

2003-2008 HUMMER H2

1500 Series (½ Ton) and 2500 Series (¾ Ton) with Two-Wheel Drive

Attention: This bulletin only applies to 1500/2500 Series 2WD and HUMMER H2 vehicles with recirculating ball type steering.

This bulletin is being revised to update the parts information to include a new washer for HUMMER H2. Please discard Corporate Bulletin Number 03-08-61-002H (Section 08 -- Body and Accessories).

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=2006229&psdid=1233&evc=sm#ss1-2006229">

Condition

Some customers may comment on a snap or popping-type noise coming from the front of the vehicle. This condition is most apparent during hard left or right turns at low speeds. Going over bumps while turning may also aid in producing this noise.

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=2006229&psdid=1233&evc=sm#ss2-2006229">

Correction

Remove the bolt-in front crossmember and add washers using the procedure listed below.

Important: DO NOT slot the mounting holes on the crossmember as stated in previous bulletins. Slotting the holes has been found to be less effective and, in some cases, causes the noise condition to be more prevalent.

<LI type=1>Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI. <LI type=1>Remove the mounting nuts, bolts and the front crossmember from the vehicle. <LI type=1>Clean all the undercoating off the crossmember in the area of the mounting holes. <LI type=1>Reinstall the crossmember with the bolts and nuts. On the driver and passenger side, add washer P/N 11509592 (C/K models) or P/N 15567836 (H2), or equivalent hardened washer (see dimensions below), at each bolt head and nut location. Tighten

Tighten the bolts to 120 N·m (89 lb ft).

Apply an even coat of Anti-Corrosion Coating, P/N 12346501 (in Canada, 10952414), or equivalent, to the crossmember where removed. Overlap the original coating in order to provide an effective corrosion protection.

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=2006229&psdid=1233&evc=sm#tab3-2006229">

C/K Models

Inside Diameter

Outside Diameter

Thickness

14 mm (0.551 in)

35 mm (1.38 in)

3 mm (0.118 in)

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=2006229&psdid=1233&evc=sm#tab4-2006229">

H2

Inside Diameter

Outside Diameter

Thickness

14 mm (0.551 in)

24 mm (0.945 in)

3 mm (0.118 in)

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=2006229&psdid=1233&evc=sm#ss5-2006229">

Parts Information

Part Number

Description

Qty

11509592

(C/K Models)

Washer

8

15567836

(H2)

Washer

8

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=2006229&psdid=1233&evc=sm#ss6-2006229">

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

E1730

Crossmember, Front Suspension - Replace

Use Published Labor Operation Time

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

© Copyright General Motors Corporation. All Rights Reserved.

Document ID# 2006229

2006 Chevrolet Chevy C Silverado - 2WD Document ID# 1863912

2006 Chevrolet Chevy C Silverado - 2WD

Subject:Underbody Pop or Clunk Type Noise While Turning or Driving on Uneven Road Surfaces (Install Body Mount Insulator) #06-08-61-003A - (09/25/2006)

Models:2004-2006 Cadillac Escalade, Escalade ESV, Escalade EXT

2004-2006 Chevrolet Avalanche, Suburban, Tahoe

2004-2007 Chevrolet Silverado (Classic)

2004-2006 GMC Sierra Denali, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL

2004-2007 GMC Sierra (Classic)

2003-2007 HUMMER H2

This bulletin is being revised to add the 2003-2007 HUMMER H2. Please discard Corporate Bulletin Number 06-08-61-003 (Section 08 - Body and Accessories).

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1863912&psdid=1233&evc=sm#ss1-1863912">

Condition

Some customers may comment on a pop or clunk type noise while turning or driving on uneven road surfaces. This noise can be heard and/or felt at either the driver's or front passenger floor pan area.

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1863912&psdid=1233&evc=sm#ss2-1863912">

Cause

Under certain conditions, normal movement between the frame and body mount may cause this noise to occur.

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1863912&psdid=1233&evc=sm#ss3-1863912">

Correction

Install an insulator at the right and left side #1 body mounts. The insulator should be installed between the upper portion of the body mount and the frame bracket. The #1 mount is the mount located just under the A-pillar. Use the procedure listed below.

<LI type=1>Raise the vehicle on the hoist. It is recommended to use a four-post lift or strap the vehicle frame to the hoist arms. <LI type=1>For the left side mount only, remove the intermediate park brake cable. Perform the following steps:

2.1. Remove the nut from the park brake equalizer.

2.2. Remove the intermediate cable from the equalizer.

2.3. Depress the retaining tabs that secure the park brake cable to the frame.

2.4. Pull slightly on the cable from the mounting area in order to provide slack for body movement without binding the cable.

<LI type=1>Remove all of the body mount bolts on the side being repaired. <LI type=1>Properly support the body at the #1 body mount area.

Caution: When you remove the body mount, do NOT separate the frame from the body more than is necessary. Possible personal injury and damage to multiple parts may result.

<LI type=1>Lower the chassis accordingly in order to remove the upper portion of the #1 body mount. Important: While the body mount is removed, check the underbody area that interfaces with the top of the body mount for excess build-up of E-Coat Primer or other foreign material. If the surface is not smooth use a 90 degree die grinder, or equivalent to remove the excessive build-up. Apply an anti-corrosion protection, P/N 12378398 (in Canada, 10952414), to the bare surface as necessary to prevent rusting.

<LI type=1>Install the new insulator to the bottom of the top portion of the #1 body mount. The picture shows the insulators (1) location after the body mount is reassembled. <LI type=1>Install the #1 body mount to the frame bracket. <LI type=1>Perform the following procedure before installing the bolts.

8.1. Clean the bolt threads of all the original thread locking compound.

8.2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.

8.3. Apply Threadlocker, GM P/N 12345493 (In Canada use P/N 10953488).

<LI type=1>Install the body mount bolts. Tighten

For 2003, 2004 and 2005 model year, tighten the bolts to 85 N·m (63 lb ft).

Tighten

For 2006 and 2007 model year, tighten the bolts to 100 N·m (74 lb ft).

<LI type=1>Reinstall the intermediate park brake cable. <LI type=1>Repeat steps 3-9 for the other side.

Test drive the vehicle to verify the repair.

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1863912&psdid=1233&evc=sm#ss4-1863912">

Parts Information

Part Number

Description

Qty

15899719

Insulator, Body

2

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1863912&psdid=1233&evc=sm#ss5-1863912">

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

E9438*

Install Insulator to #1 Body Mount

1.7 hrs

* This is a unique labor operation number for bulletin use only. It will not be published in the Labor Time Guide.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

© Copyright General Motors Corporation. All Rights Reserved.

Document ID# 1863912

2006 Chevrolet Chevy C Silverado - 2WD

Awesome thanks for the info, Im dropping it off monday and Ill give them a copy of this!

jrrod2004 · January 11, 2008

just letting you know that you might have to do a ride along so they can hear it for sure and not get the 'unable to duplicate' statement.....

jnpaddison · January 11, 2008

Do you have Nerf bars attached to the lower body mounts ??

usmc3529 · January 11, 2008

Do you have Nerf bars attached to the lower body mounts ??

yes I just put nerfbars on about 2 weeks ago

usmc3529 · January 11, 2008

Do you have Nerf bars attached to the lower body mounts ??

yes I just put nerfbars on about 2 weeks ago

and yes they are attached to the lower mounts with new bolts supplied from the manufacturer. If I stand on them or tug on them I get no noise. I could maybe see them causing a rubbling noise from the metal to meatl contact with the bracket at most but not this popping/cracking, my truck does it when warm which makes me believe its a tie rod or something in the rack?? Have you heard of nerf bars causing issue? If so I would think it would do the same on the p/s too.

PhilB · January 11, 2008

Do you have Nerf bars attached to the lower body mounts ??

yes I just put nerfbars on about 2 weeks ago

and yes they are attached to the lower mounts with new bolts supplied from the manufacturer. If I stand on them or tug on them I get no noise. I could maybe see them causing a rubbling noise from the metal to meatl contact with the bracket at most but not this popping/cracking, my truck does it when warm which makes me believe its a tie rod or something in the rack?? Have you heard of nerf bars causing issue? If so I would think it would do the same on the p/s too.

Did your noise start happening after you installed the nerf bars? If so, you may want to retighten the mounting bolts. There have been problems in the past with noises that were caused by the cab mounting bolts not tightened properly. What happens is the frame flexes and causes the cab to bounce or move just enough to cause the noise. Might be worth checking in to it.

Phil

jrrod2004 · January 12, 2008

I think the torque specs were in the range for 110 lbs to 180 lbs if you put nerf bars on....check your documentation.....

jnpaddison · January 12, 2008

if re-torque'g to spec doesnt work - take the nerf bar off the drivers side and see if issue persitst ..

supersportsilverado · January 21, 2008

Ok, I ve had this really bad creaking/clunk/popping on the driver side while driving 10mph or under. Very noticeable while turning left slowly. Also you can from a dead stop let off the brake then re apply and you get the same popping. creaking noise. Just had the upper control arm placed two days ago and its still doing it. Links, tie rods and everything under the hood appear tight and nothings rattling. It does it when warm or when driven more than about 20 miles. Leads me to believe it might be in the steering rack or something in the steering?? Any ideas or experiences

truck is a 2007 silverado 1500 2wd ext cab 5.3 lt1 package

Im getting pissed now because the bcm has gone out,the aspirator on the celing has gone out, this issue and numerous rattles and squeaks from the dash and doors my 2003 1500 had 0 problems when i got rid of it at 57k

Could possibly be your steering shaft..... here at the GM dealership i work at we replace those daily apperently the robot at the assembly plant fell asleep and made the shaft that connects to the rack and pinnion a little to long which makes it pop....i would suggest going back to your dealer and report it to them if it is the steering shaft they have to replace it under warranty......

scottmoyer · January 22, 2008

My truck has the same sound from the drivers side and it is the insulator that you need. I had a creaking on the passenger side of my truck after I installed the nerf bars. The dealer said that once those get installed, that's when people start coming in for the creaking/popping sound. They installed the $3.50 insulator and the creaking has been gone for about a year. I now have the popping under foot (so it sounds) and will need to do the job on the drivers side as well.

Does anyone know exactly what needs to be done on this side with the brake cable? I read the above, but not sure what it's telling me. Do I have to remove the brake cable connection to install the insulator? Thanks

empirezclub · January 25, 2008

I had the same problem dealer had to replace the leafsprings. There is a TSB for the leaf spring inserts but when they put the new ones in it was still loose so they ordered new leaf springs. They also informed me of another TSB for the exhaust system being too close to the crossmember and needing to be adjusted. I don't know the document numbers. They also had to fix 2 rattles in the dash board, and the buzzing noise from all 4 door panels. I had an 06 Ram that didnt rattle or creak or need any funny repairs like new leaf springs. My Dads 2000 F150 has never been to the dealer and it has never squeaked or rattled, and my parents have fairly rough roads were they live. I live in Phoenix with rubberized smooth as glass roads and freeways! I hate rattles and I hate to say it again but GM, everything they make is still 10 years behind in quality than everyone else. I will never buy another one. Good looking truck I love it but I think I am used to a higher quality product.

jrrod2004 · January 25, 2008

yea yea to each is his own on truck.....

jrrod2004 · January 25, 2008

To answer your question on TSBs:

Document ID# 1999324

2007 Chevrolet Silverado - 2WD

Subject:Rear Leaf Spring Slap or Clunk Noise (Replace Spring Inserts) #03-03-09-002B - (07/23/2007)

Models:1999-2008 Chevrolet Silverado 1500/2500 Series Pickups

2000-2008 Chevrolet Suburban 2500 Series

2002-2008 Chevrolet Avalanche 2500 Series

2003-2008 Chevrolet Express 2500/3500 Vans with 8500 GVWR (RPO C5F), 8600 GVWR (RPO C6P) or 9600 GVWR (RPO C6Y)

1999-2008 GMC Sierra 1500/2500 Series Pickups

2000-2008 GMC Yukon XL 2500 Series

2003-2008 GMC Savana 2500/3500 Vans with 8500 GVWR (RPO C5F), 8600 GVWR (RPO C6P) or 9600 GVWR (RPO C6Y)

This bulletin is being revised to add model years and update the Parts Information. Please discard Corporate Bulletin Number 03-03-09-002A (Section 03 -- Suspension).

Condition

Some customers may comment on a rear leaf spring slap or clunk noise. This noise is most apparent when the vehicle is operated over irregular road surfaces.

Correction

Important: DO NOT disassemble the main pack on the leaf spring or remove the bushing from the spring.

(1)Insert -- P/N 15604067

(1)Insert -- P/N 15247030

Verify that the rear leaf spring inserts (1) are present on the leading and trailing ends of the overload spring (second stage leaf). The insert may have broken apart from wear and fallen out. If the inserts are not present, install new ones.

Important: On some models, the vehicle may have to be raised to allow the springs to separate enough so the insert can be installed.

Parts Information

Important: Technicians should refer to the Parts Catalog when ordering the insert.

Part Number

Description

15604067

Insert, Rear Spring Leaf

15247030

Insert, Rear Spring Leaf

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

E5168

Insulator and/or Insert, Rear Leaf Spring - One or All - Replace

Use Published Labor Operation Time

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

Document ID# 1999324

2007 Chevrolet Silverado - 2WD