[FONT="][FONT="]Hey guys my truck has the 4l60e and about 10 days ago I dropped the pan, installed a new gm filter and gasket and then reinstalled the pan. Torqued it to 11 foot lbs with a torque wrench. I then removed the cooler line and did the cooler liner exchanged. I filled it to cold and then drove around for 30 mins and added again to get it to the “hot” section. The next day I hit the highway and drove 600km. Everything went fine, 2 days later I noticed the transmission RPM were surging when I would shift from reverse to park, park to drive etc so I thought it was due to the cold weather or something. I hit the road again and after 100km I pulled over and filled gas and checked the transmission fluid and it was in the cold region again, weirdly so I added again to get it into the hot area and continued on with my day. The surges were due to the low fluid it seemed so once i filled up it was all good. This whole last week I didn’t drive much so I couldn’t get it hot enough to check but i didn’t notice any surging/rpm spikes so I assumed everything was good! Yesterday I checked the fluid again when it was hot, and it was back down to the cold region again. So I added again for the 2nd time. I heard that sometimes air gets in the system when I remove cooler line and do the exchange but I doubt it could be that much. I assume I have a small leak or something? It seems to only like the amount between cold and hot on the dip stick which is like 250-400mL maximum imo. What do you guys think it is? I assume pan needs to be retorqued again? Or maybe the cooler line is leaking but I checked quickly and didn’t notice anything. Anything else I should look at?[/FONT][/FONT]
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