Simple How To Add Cruise On Nbs 2007 - 2010 Sierra Silverado

EXSlider400 · May 28, 2010

Finally I have cruise control added to my NBS Sierra W/T .

Since there are threads out there, but are hard to follow, this is what I know

Info pulled from various threads, so thanks to all who contributed)

1) These are the items needed to add cruise

- Clock spring - part# 15829094 & is called a Coil

- Column wiring harness

(PT# with Towing: 25807859 & PT# without Towing: 25807858)

- Steering wheel with cruise buttons (e-bay or salvage yard) I have heard about people adding the buttons to their wheel, but not sure about wiring and cutting issues.

2) When installing all the items, disconnect your battery so the air bag doesn’t deploy. To remove the air bag, there are 2 holes in the wheel housing you can use a small flathead to pop the retaining arms with (one or both at a time)

*Note: Regular cab W/T series do not have the same wiring as all the other trucks, so the backlighting will need to be connected through the fuse box on the left side of the dash. (Install a 2.5 amp fuse and connect the light brown wire (may be different on other years) to the dash light’s wiring harness since there is no spot to add a fuse in the fuse box. It is off white with a blue bracket that clamps to hold the harness together. If you undo the harness, look for the dark brown wire. Careful, because there is a black w/ white stripe and a black wire. Make sure you get the brown wire. Cut it close to the fuse box, and tap it onto the dash lights. This will light up all wheel buttons.

3) Once all the items are installed find a dealership who will deal with this as most don’t. When you have one, have the service writer call the GM Techline and explain that you want cruise added ask them what procedures are needed to add cruise. A couple of years ago GM supported adding cruise to the NBS trucks, then stopped supporting it at all, and now as of September 09 they have started supporting it as long as there is correct documentation of the parts that have been added. Most service writers have to try a few times before the paperwork is correct, as Gm is extremely picky about the documentation! You must have the following, and it has to be written up on a single service work order saying the dealer installed the parts. Here it is:

1. Receipt of purchase for Steering wheel. (LKQ, E-bay, or GM Parts Direct)

2. Receipt of purchase for clock spring.

3. Receipt of purchase for column wiring harness.

4. Receipt of where dealer installed all items (Dealer may need to make one)

(Don’t bother arguing that your truck already has the needed wiring harness! They do not care! You must provide a receipt for the harness, regardless of whether you use it or not!)

4) Fax this documentation to them, and they will have a new CAL file available for your truck around 3 hours. It would probably be best if the service writer calls them and request the new CAL. After they have processed your request and assigned a new CAL it will permanently be updated in their records for your truck's VIN. So, in the event your BCM goes bad, when the tech installs a new BCM and downloads your CAL file it will automatically add cruise to your BCM.

The cost is 2 hours of shop time at the dealer, and a $55.00 software fee to total around $200.

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