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Cruise Control

scottmurf22

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scottmurf22 Enthusiast

scottmurf22

Posted
Posted

Yesterday I had my cruise set on the interstate and hit my window buttons by accident. It seems that if I pull both of my rear window buttons up at the same time the cruise control cut itself off. It will stay on if you pull the front window buttons up but cuts off with the rear. Does anyone else's truck do this? I have a 08 ext cab z71. 5.3 with AFM

8.1HD/ALLISON Senior Enthusiast

8.1HD/ALLISON

Posted
Posted

Looks like there is a reprogram for the ECM. Can honestly say I have not seen this one yet, but sounds like someone has. I was gonna guess a voltage spike causing issues.

 

#09-08-68-001: Cruise Control Turns Off During Operation (Reprogram ECM) - (Nov 13, 2009)

 

 

 

Subject:Cruise Control Turns Off During Operation (Reprogram ECM)

 

 

 

 

Models:2008-2009 Cadillac Escalade, Escalade ESV, Escalade EXT

 

 

2007-2009 Chevrolet Silverado

 

 

2008-2009 Chevrolet Avalanche, Suburban, Tahoe

 

 

2007-2009 GMC Sierra

 

 

2008-2009 GMC Yukon, Yukon Denali, Yukon XL, Yukon Denali XL

 

 

2008-2009 HUMMER H2

 

 

 

 

<A href="#ss1-2368552">

Condition

On rare occasions, some customers may comment that the cruise control turned off. This typically occurs during operation and while pulling up and releasing both driver door window switches or activating the heated windshield washer fluid system in cold weather conditions with a battery charge below 80%.

 

<A href="#ss2-2368552">

Cause

Cruise control command cancellation is caused by a voltage spike that occurs when the driver door window switches are released or when the heated washer fluid system is activated.

 

<A href="#ss3-2368552">

Correction

A revised calibration has been developed to address this condition. Technicians are to reprogram the ECM with the latest calibrations available. This new service calibration is available on TIS2WEB using the Service Programming System (SPS). Refer to the SPS procedures in SI. SPS may require the technician to select the calibration from the ECM calibration screen.

 

Note: This calibration update should only be used when this loss of cruise control condition is experienced.

 

When using a Tech 2® or a multiple diagnostic interface (MDI) for reprogramming, ensure that it is updated with the latest software version.

 

During programming, the battery voltage must be maintained within the proper range of 12-15 volts. Only use the approved Midtronics® PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent during programming.

 

 

oldmann Senior Enthusiast

oldmann

Posted
Posted

One guy here had this problem. His kid inback seaat would play with the buttons in the back and his cruise would shut off. He couldn't figure it out for a while. Lol!

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