The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

72timemachine · 10-14-2018, 08:59 AM

Well, here's my story. I found the '07 lq4 in a boneyard minus the manual transmission which prompted my question back to the other member whether I needed a different pcm or not.

Being new to all of this, I went to Wikki to figure out what automatic transmission I needed. While I understand Wikki could be mistaken, this is why I came to that conclusion that I would need a 6 speed automatic. They received their information from the GM newsroom.

If you look under "applications" it lists Silverado hd 6.0 from 2007-2016 using the 6L90.

https://en.wikipedia.org/wiki/GM_6L80_transmission

It's predecessor being the 4L80E/4L85E and 4L60's which Wikki said ended in 2006 for Chevrolet hd trucks.

https://en.wikipedia.org/wiki/GM_4L80-E_transmission

Perhaps the truck I took the lq4 out of is a late 2006? The doors were gone and the dash was also cut out so I only had the year of the truck written on the
truck bed to go by. Thanks for the info.

10-14-2018, 08:59 AM	#7
72timemachine Registered User Join Date: Oct 2008 Location: los angeles ca Posts: 210	Re: Where did GM hide the pcm? Well, here's my story. I found the '07 lq4 in a boneyard minus the manual transmission which prompted my question back to the other member whether I needed a different pcm or not. Being new to all of this, I went to Wikki to figure out what automatic transmission I needed. While I understand Wikki could be mistaken, this is why I came to that conclusion that I would need a 6 speed automatic. They received their information from the GM newsroom. If you look under "applications" it lists Silverado hd 6.0 from 2007-2016 using the 6L90. https://en.wikipedia.org/wiki/GM_6L80_transmission It's predecessor being the 4L80E/4L85E and 4L60's which Wikki said ended in 2006 for Chevrolet hd trucks. https://en.wikipedia.org/wiki/GM_4L80-E_transmission Perhaps the truck I took the lq4 out of is a late 2006? The doors were gone and the dash was also cut out so I only had the year of the truck written on the truck bed to go by. Thanks for the info.