Love0126

That's kind of what I was thinking too. It is a 1500 with the 4L60e. I will double check there are no codes with my Tech2 and post if anything has changed since the last time. If the tranny gives up the ghost, I kind of want to swap an 8.1L or a Duramax in here. ?. I dislike the lack of torque that the 5.3L has down low.

Hi, I have a strange question. I picked up a 2005 GMC Savana with the 5.3l, and about once per week, I will get a strange 1-2 upshift. It comes off the line from a stop with the engine revving higher than normal, almost like it's half in gear. Then it seems to catch and shift like normal. I have tried engine braking in the parking lot and it doesn't seem to be slipping. Fluid is topped off and pinkish. Any ideas on what could be causing it? No codes.