TX14-LL3500
Junior Member
I have a Laramie Longhorn dually mega-cab, 144K miles, that went into limp mode while driving. I had it towed to a shop, code pulled was P0750. I am being told all wiring was checked between the ECM and VB, no trouble found. They replaced the valve body w/new VB assembly, this did not resolve the issue, they are unable to communicate with it and are unsuccessful in clearing the P0750 code. Now I am being told the ECM must be bad based on their determination of next steps to resolve the communication issue to the VB.
Truck history: this is the 2nd VB Assy installed on the truck, 1st failed just under 100K, covered by warranty in 2018. When the transmission failed, it went completely out and lost power. I was told plastic pieces of the VB broke off inside the transmission.
Based on information I have read on this forum and YouTube, it appears the 6.7L+68RFE on the 3500s, has a great deal of issues, the valve body fails a lot and I am trying to prevent continuing to throw 1Ks $ at unsuccessful part replacements; these guys are not experienced enough with my particular truck situation. I am hoping someone can provide feedback and assist me. Thank you in advance!
Truck history: this is the 2nd VB Assy installed on the truck, 1st failed just under 100K, covered by warranty in 2018. When the transmission failed, it went completely out and lost power. I was told plastic pieces of the VB broke off inside the transmission.
Based on information I have read on this forum and YouTube, it appears the 6.7L+68RFE on the 3500s, has a great deal of issues, the valve body fails a lot and I am trying to prevent continuing to throw 1Ks $ at unsuccessful part replacements; these guys are not experienced enough with my particular truck situation. I am hoping someone can provide feedback and assist me. Thank you in advance!