2006 Silverado

Clock Spring Swap

As requested, I have documented the steering wheel swap that most guys want to do on the GMT 800 series trucks in order to add DIC functionality as well as redundant steering wheel controls. This install covers the years 2003-2007 classic trucks and SUV's.

THIS WRITEUP DOES NOT APPLY TO THE GMT800 SERIES VEHICLES THAT ARE MODEL YEARS 1999-2002

For the Steering Wheel Swap, click here: Steering Wheel Swap.
For Home Page, click here: Home Page
For the updated procedure on reprogramming, click here: Updated Programming Procedure
For the original procedure on reprogramming, click here: Original Programming Procedure
For the cost breakdown, click here: Cost Breakdown

Mike C.

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**Important DISCLAIMER: I will not be responsible in any way directly or implied for your mistakes. Great care is required when working with critical components of your vehicle. The below information is provided to those who wish to undertake the risk and assume all self liability with regard to any modification/retrofit. Once again, by proceeding to read the below information, you agree that I will not be held liable for any of your actions directly or indirectly. Mod at YOUR OWN RISK!!!

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.

Items that you will require:

  • Star Bit - size T20
  • Push bar for releasing the airbag
  • Steering Wheel puller - I used a Craftsman tool
  • Torque Wrench
  • 13/16 deep socket
  • 9/16 wrench
  • 1/2 wrench
  • 6" extension
  • 5/8 wrench - For battery post extender, yours will vary for OEM size
  • 14 mm wrench - For battery post extender nut, yours will vary for OEM size
  • Steering wheel equipped with the radio buttons - Part number may vary based on trim and color.
  • Clock spring - Part Number: 26101829 (Dual stage airbag clock spring for all 1/2 ton vehicles. 3/4 and 1 ton have single stage airbags)


Cost:

Wood accented steering wheel: $116.00, steeringwheelswap/PICked up off Ebay
Clockspring with harness for steering wheel controls: $70.00, steeringwheelswap/PICked up off Travis
UK3 Redundant Steering Wheel Controls reprogrammed in the BCM, completed by Tim Hoffmeyer @ Henna Chevrolet: $30.00
Driver Information Center enabled by Charlie @ Flordia Speedometer: $75.00
Shipping of the IPC to and from Charlie @ Florida Speedometer (Expedited Shipping) $102.94

Total Running Cost: $393.94

**your costs may vary depending on where items are obtained from as well as services preformed.**

 

Step 1:

This is the installation of the clockspring that is compatible with the steering wheel buttons. Please refer to the Steering Wheel Swap for instructions on how to access the clockspring. I start off this writeup between steps #15 and 16 of the Steering Wheel Swap.

Drop the gear shift selector to 1st gear. This will allow the removal of the Instrument Cluster trim piece:

 

 

Step 2:

Next, remove the knee bolster trim panel. You will need the 7mm socket and ratchet in order to remove the two screws on the bottom of the panel:

 

 

Step 3:

Here is the clockspring that Travis sent me that has all the connections to support the steering wheel buttons:

 

Step 4:
Disclaimer:

Caution

When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling Zones. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.

Caution

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Disabling the SIR system prevents deployment of the air bags from the reserved energy supply.

Discard any of the following components if it has been dropped from a height of 91 cm (3 ft) or greater:

  • Inflatable restraint front end sensor
  • Inflatable restraint I/P module
  • Inflatable restraint passenger presence system (PPS)
  • Inflatable restraint seat position sensor (SPS)
  • Inflatable restraint sensing and diagnostic module (SDM)
  • Inflatable restraint side impact sensor (SIS), with RPO HP2
  • Inflatable restraint steering wheel module
  • Inflatable restraint steering wheel module coil

Now, begin to separate the column cover using a flat bladed screwdriver from the precision tool kit. If you dont have one of these, try to find the smallest flat blade to assist with disassembly. When separating the top piece from the bottom, take it slowly and VERY gently, otherwise you will bust tabs up.

 

 

Bottom half of the cover (Notice the delicate tabs):

 

 

and the top half:

 

 

Step 5:

Remove the Instrument Cluster (Gauges) and the headlight control/vent unit:

 

 

 

Also, remove the metal shield. Here is where you will need the 10mm socket and the 10" extension.

 

Step 6:

Now focus on the snap ring that holds the original clockspring in place. Take your time with removing this snap ring as this will hold the new/replacement clockspring in place:

 

Step 7:

Remove the original clockspring from the center shaft and begin to disconnect the electical connections:

A word to the wise, how I swapped my clockspring was each time I disconnect a plug from the old harness, I would find the same plug on the new harness and plug it in. This made it a lot easier to verify if I was plugging in the right item as well as route the new harness in the location of the old one.

 

 

Step 8:

Once the new harness has been installed, make sure to zip tie the wires in place:

 

Step 9:

Install the new clockspring on the center column AFTER centering it (A new clockspring should come pre-centered for you)

 

This next part was taken from the GM Service Manual. Please use it to identify which specific procedure would apply to you if you find yourself needing to center your clockspring.

 

    Notice

    The new SIR coil assembly will be centered. Improper alignment of the SIR coil assembly may damage the unit, causing an inflatable restraint malfunction.

    Important

    If double wire harness strap is installed onto the wire harness assembly and column, you must reuse the holder for the wire straps during installation.

    Remove the wire harness strap(s) where necessary.

  1. Verify the following conditions before centering the SIR coil:
    • The wheels on the vehicle are straight ahead.
    • The block tooth (1) of the steering shaft assembly is in the 12 o'clock position.
    • The ignition switch is in the LOCK position.


     

  2. If the front (5) of the SIR coil has a centering window (4), and the back side (2) includes a spring service lock (1), perform the following steps:
    1. Hold the SIR coil with the face up.
    2. While depressing the spring service lock, rotate the coil hub clockwise until the coil ribbon stops.
    3. Rotate the coil hub slowly, counterclockwise, until the centering window appears yellow and both arrows (3) line up.
    4. Release spring service lock between the locking tab. The SIR coil is now centered.
    5. Align the centered SIR coil with the horn tower and slide onto the steering shaft assembly.

     

     

     

     


     

  3. If the front (4) of the SIR coil has a centering window (3), and the back side (1) includes NO spring service lock, perform the following steps:
    1. Hold the SIR coil with the face up.
    2. Rotate the coil hub clockwise until the coil ribbon stops.
    3. Rotate the coil hub slowly, counterclockwise until the centering window appears yellow and both arrows (2) line up. This is the CENTER position.
    4. While holding the coil hub in the CENTER position, align the SIR coil with the horn tower and slide onto the steering shaft assembly.

     

     

     

     


     

  4. If the front side (3) of the SIR coil has NO centering window, but the back side (2) includes a spring service lock (1), perform the following steps:
    1. Hold the SIR coil with the back side up.
    2. While depressing the spring service lock, rotate the coil hub in the direction of the arrow (4) until the coil ribbon stops.
    3. Still pressing the spring service lock, rotate the coil hub in the opposite direction 2½ revolutions.
    4. Release the spring service lock between locking tabs. The SIR coil is now centered.
    5. Align the centered SIR coil with the horn tower and slide onto the steering shaft assembly.

     

     

     

     


     

  5. If the front side (2) of the SIR coil has NO centering window, and the back side (1) includes NO spring service lock, perform the following steps:
    1. Hold the SIR coil with the face up.
    2. Rotate the coil hub in the direction of the arrow until the coil ribbon stops.
    3. Rotate the coil hub, slowly, counterclockwise, for 2½ revolutions. This is the CENTER position.
    4. While maintaining the coil hub in the CENTER position, align the centered SIR coil with the horn tower and slide onto the steering shaft assembly.
  6. If double wire harness strap is installed onto the wire harness assembly and column, you must route the wires up against the steering column. One wire harness strap will surround one lead from the coil to the steering column. The other wire harness strap will surround all leads to the steering column.

 

Step 10:

Install the now Centered SIR Coil onto the center shaft and reinstall the retaining snap ring. Make sure the snap ring is fully seated before reinstalling the steering wheel.

 

Step 11:

Gently reinstall the bottom half of the column trim cover:

 

 

and then install the top half. Make sure to properly seat the boot on the shifter as well.

 

Here, you can also reinstall the gauges and headlight controls back on.

Now return back to the Steering Wheel Swap page and resume at Step #16.

 

Some notes (Taken from http://autowoods.com/supplemental.htm)

Original Programming Procedure:

Summary:

Your vehicle will have to have its IPC and the TBC reprogrammed by GM Techline
Dealership will have to call GM Techline to get 2 VCI numbers to complete the reprogramming
This is required if your vehicle did not come with the RPO UK3 from the factory.

 

In depth:

First, You must get the steering wheel with controls. I believe part numbers were listed above, but bottom line, make sure you get the right color if you are ordering. The black one is called ebony. Prices vary depending on where you get them. I got mine from a salvage yard brand new for $75. Second, You must replace the clockspring with the column harness. If you have a light duty steeringwheelswap/PICkup, you will need part number 26101829. This is for a 2 stage air bag. If you have a heavy duty, order part number 26101828. This is for a single stage air bag. If you are unsure, take off your airbag and look to see if it has 1 or 2 pigtails connected to it. 1 is a single stage, 2 is a 2 stage. GM has reduced the number of part numbers available to simplify things. Therefore, you will get a harness equipped with an additional 8 pin connector. This is for the steering wheel speed sensor for quadrasteer. If you do not have quadrasteer, just tape it to the column and don't worry about it.

Be careful when installing the harness, there are about 14 connectors, I spent 2 hours installing the harness and wheel.

Now the part which has been the most confusing. If your truck was not equipped with rpo code (UK3) which is redundant radio controls, your body controller will not recognize or (turn on) the radio controls. In addition the instrument cluster will not recognize or turn on the DIC functionality. Therefore, your dealer will have to call the Techline Support center. This is not the same as TAC. Techline is for software, programming ...etc. They need to explain what they are doing and request a 2 VCI numbers. A VCI number is a new calibration code which will allow your controllers to turn on the radio and DIC controls. They need to get a code for the IPC and one for the TBC. They will then request info from the vehicle with their Tech 2 handheld device. They then take the Tech 2 to their PC loaded with TIS2000 and perform a SPS programming function using the VCI numbers. This will load the calibration into the Tech 2. They then take the Tech 2 back to the vehicle and load the new calibration into the vehicle. They will need to go through this process twice, once for the IPC and again for the TBC using the new VCI numbers.

I personally did every part of this on my own truck today (yes, the programming also) and it does work. The Dealers do not get this request often, so probably will not know the process. Therefore, print out this message and they will then understand.

 

Updated Programming Procedure:

Vehicle has to be reprogrammed for Redundant Steering Wheel Controls (UK3) in the BCM
Vehicle has to be reprogrammed for DIC operation in the IPC
There are no more VCI numbers that are requested, instead whole new calibrations are simply downloaded to the Tech 2 and then uploaded to the BCM and IPC.
GM Techline will assist with the download/upload of the calibration files if needed.

 

Story:

After doing the complete hardware swap, I took my truck to Henna Chevrolet for reprogramming. I spoke with Tim at the dealership regarding my request and brought along the above instructions. Tim stated that he had done many reflashes of the BCM for TPMS, powered mirrors, updated wheel sizes and the like. He was straight forward with me and told me that he had never done a reflash (reprogram) for the Redundant Steering Wheel Controls and DIC functionality. He agreed to take it in and do the reprogramming attempt himself and he was willing to charge me only if the reflash (reprogram) succeeded.

Tim did attempt to follow the above instructions that I had printed out for him. He later explained to me that GM now issues a calibration file that is directly downloaded to the Tech 2 (VIN specific) and then uploaded to the BCM for the Redundant Steering Wheel Controls to be turned on. Apparently, there no longer exists the VCI numbers. He then downloaded the calibration file for the DIC controls and attempted to upload them to my IPC. He stated that he kept on getting a communication error from the IPC and that it would not accept the reprogramming for DIC functionality. He then called GM Techline and they walked him through step by step, to no avail. It is this phone call in which he confirmed that his printed information from his shop manual was correct and GM no longer used VCI number for this but instead calibration files. The tech from GM Techline determined that all the connections were good, it was simply a matter of the IPC being defective.

Tim ended up giving me a call and advising me of what took place. He agreed to only charge me for the successful reprogram of the Redundant Steering Wheel Controls (UK3) and not the reprogramming of the IPC since that part failed. The total charge was $30.00. He did not charge me any labor at all, to which I was grateful since I found out that he had messed with this for about 5.5 hours. The $30.00 charge was from GM Techline on issuing the calibration file for the Redundant Steering Wheel Controls. All in all, not a BAD ending to the day but I was slightly disappointed in the DIC not working on the IPC.

I was soon put into touch with Charlie @ Florida Speedometer and explained to him exactly what I was doing and what I wanted. Charlie told me that he could get the IPC to accept the reprogramming to enable the DIC funcationality. He told me up front that he would need me to pull the IPC out of the truck and ship it to him at his address. I pulled the cluster out of my truck on a Thursday and had it shipped to him with a guaranteed Saturday delivery. As you are reading this, Charlie as since completed the IPC reprogramming and is shipping me back my IPC. I shall update this page once I receive it and test it out.