2015 Silverado Z71 5.3L 4x4 Transmission/Converter Issues.

speeddemon01 · March 10

I have a 2015 Silverado Z71 5.3L 4x4 with 160k miles. Within the last couple of days it started off with a studer going up hills at low RPMs. Level Ground and down hill no issues. Full Throttle there was no issues. This morning the convert started slipping kinda like a bad clutch in a manual. This afternoon it seems a bit smoother and I didn't notice the slipping but the Transmission will not shift into 5th or 6th gear. Am I looking at a transmission rebuild and converter replacement or is there something simpler that I should be looking at?

CamGTP · March 10

Likely a full rebuild. The converter probably has been going out for a while and it slowly takes out of the front pump and damages the clutches inside. Making it to 160k on a stock unit isn't half bad with the failure rate of these torque converters at higher mileage.