× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: 2nd to 3rd shift problem at WOT: 4L80E
Posted to Transmission Forum on 4/22/2001

[...trimmed text...]

Have you checked your PCM, or TCM input for selected range. If it thinks it's in manual 2, it might not be commanding an upshift. When the rpm's get too high, it might shift it, momentarily, just to p... Login to read more.