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2008 Chevy Silverado, Cruise Control

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Forum Name: Cruise Controls
Forum Discription: Cruise Control Settings, Tach Signal, VSS PPM(Vehicle Speed Signal Pulses Per Mile), Vacuum, Brake, etc.
Printed Date: June 07, 2023 at 2:22 PM

Topic: 2008 Chevy Silverado, Cruise Control

Posted By: jmroussel
Subject: 2008 Chevy Silverado, Cruise Control
Date Posted: May 26, 2008 at 7:41 PM

Does any techniciens had ever installed a Rostra cruise on the new body style 08 Silverado? Rostra has a listing which is "pedal pull" but no special bulletin on how to install it. The engine is a 4.8L with electronic gaz peddle.




Posted By: Velocity Motors
Date Posted: May 26, 2008 at 9:52 PM
Just need to install the control handle/switch and program the software to activate via the drive by wire. You will need a GM Scantool to do this.

Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: techman93
Date Posted: May 26, 2008 at 10:26 PM
I had to do one a few months ago and they have a tech note how to assembly the throttle pull to the gas pedal inside the vehicle. You can contact Rostra and have them fax you the document. It shows where to mount control box and how to bend and cut support bracket.

The wire I'm test'n isn't doin' what it's supposed to be doin'... I am so glad I printed that tech sheet, with the wrong info.
Do it right the first time... or I might have to fix it for ya

Posted By: sparkie
Date Posted: May 27, 2008 at 7:17 PM
I'm sorry Jeff, but unless the truck is a 2007 "old/classic" design you can't install the cruise lever and program it to work. The 2007 "New Design" trucks are locked for programming. The cruise won't work in that method. There is a tech tip on Rostra's website under the Technical Support link that shows how to install a cruise in a pedal pull method. Be sure to follow it exactly or you won't get very good results.


Posted By: ranger svo
Date Posted: June 03, 2008 at 9:02 PM

I've been installing the 250-9003 on the "new body style" 07 and 08 trucks until just recently. The code thing sucks. But there has got to be another cruise kit available. Pedal Pull, you've got to be kidding.

So what else is available?

The moving power of mathematical invention is not reasoning but imagination.
Augustus de Morgan

Posted By: zziggy
Date Posted: June 24, 2008 at 4:30 PM

I've written GM, Doubt it made it past the mailroom though.

That we installers, the GM dealers, the Fleet sales and the Customers who just spent about $15-$20,000 for a strip down work truck would like to add Cruise Control on many of the trucks.

Since GM isn't selling the parts kit, and the aftermarket is, but with the locked out coding, GM is ONLY Hurting themselves!

Ford codes are not a problem, Dodge and Toyotas are a parts only addition!

I guess GM has either gone STUPID or is TRYING to cease operations.

Posted By: diagnall
Date Posted: August 20, 2008 at 5:20 PM
Rostra's pedal pull for this is dagerously scary. We have completed 1 install that I advised against due to the method of pedal attachment. The problem is that if the customer should kick up there right foot and hit the cruise cable you can pull the cable out of the metal hold down which will floor the gas pedal at the same time sticking it there. Not sure about you but I prefer not to kill my customers.

Posted By: sparkie
Date Posted: August 21, 2008 at 7:52 PM
I've done hundreds of pedal pull cruise controls and the 2008 GM pickup install is very safe. Kick the cable all you want, the only thing you could do is break something that won't allow the cruise to work. If Rostra lists a way to put a cruise control into something, you can bet it has been thoroughly tested and is safe.


Posted By: anivek
Date Posted: September 03, 2008 at 11:31 AM

can the programming be unlocked by the dealer, or can they program it?


Posted By: jmroussel
Date Posted: September 03, 2008 at 7:44 PM

Rostra quote that the vss wire is located under the vehicle under driver 's door at abs module, is this easily accessible or do I need a hoist to access this area?



Posted By: diagnall
Date Posted: October 02, 2008 at 10:37 AM
Vss wire is on the back ofthe block where the left foot sets on the firewall, unsnap the block and turn it to see the GREEN/ black on the rear.

Posted By: ponchonutty
Date Posted: November 09, 2008 at 7:30 PM

diagnall wrote:

Vss wire is on the back ofthe block where the left foot sets on the firewall, unsnap the block and turn it to see the GREEN/ black on the rear.

What do you mean?  What block?  I plan to help a disabled couple that previously had another cruise company install Trilogex's unit which doesn't work or rarely will engage.  So, I am going to try this pedal pull setup so they can make their 2.5hour trip more enjoyable to see their doctors.  Any more tips or help on this would be great.  I'm not a newbie.  I've been in the bizz  for about 15 years but have only done one pedal pull install before.

Posted By: sparkie
Date Posted: November 11, 2008 at 6:58 PM
Set the cruise's sensitivity to its lowest setting. Attach the cruise cable as low as possible on the gas pedal to increase the leverage. Be patient. The other solution is there are rumors that Trilogix may have a new drive by wire version out before early next year. They should have all the bugs worked out.


Posted By: rockyboy
Date Posted: November 16, 2008 at 12:17 PM

I would like crusie control in my 2008 dually diesel silverado. Someone who has done one before. Im from new jeresy will to travel to get done. please email me


Posted By: tomcruise
Date Posted: February 09, 2009 at 1:55 PM

The VSS wire is GREEN / WHITE not GREEN/ black. It is on the back of the junction block in a black connector above a green and orange connector. I do not recommend a pedal pull on any drive by wire throttle system. You will most likely have surging that you can not get rid of.

The dealer's can now get the OEM parts programmed. We have done 10 OEM installs and programmed them. They are much more expensive but considering the alternative, that doesn't work, it's worth it.

Posted By: closmendez
Date Posted: February 16, 2009 at 9:46 PM
GM does not support BCM reprograming for Cruise control upgrade even with factory parts. Good luck getting it done, this is from a GM Engineer I talked to today 02/16/2009. Gm does charge the Dealers standing credit line the $50.00 dollars for software updates that they support and Cruise Control is not a supported upgrade.

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