So i changed my tranny fluid in my 04 blazer today and after about an hour of putting that damn pan back on everything seemed in good shape. I ran it through the gears and checked the fluid levels everything still good so i took it for a test drive. While on the test drive i noticed that the car wasn't shifting into first, in fact it seemed like it was ignoring first altogether. Reverse works fine, i tried running it through the lower gears but it still seems like it doesn't want to go into first. My brother seems to think it may have something to do with the tensioner, or maybe something got jarred loose as we were putting the pan back on, either way not sure. So I was hoping you guys could help me out in some way, thanks in advance!

forgot to mention the engine light came on as well, but i don't have a diagnostics tool so i'll have to check it tomorrow when advance is open.

 

Definitely let us know what codes come up when you check them.

You likely knocked a wire off of one of the solenoids inside the pan when you were putting it back on.

 

yeah that sounds like what it is... here's the code

P0758
Shift Solenoid B
Circuit Electrical


so reattaching the wire should fix the problem?
and thanks for the quick reply


also are there any tricks or easier ways to remove/reattach the tranny pan?

 

All better! Yeah so apparently i managed to damage one of the two solenoids closest to the engine. picked up a replacement at a nearby chevy dealer and "carefully" reseated the pan... good as new, thanks for the help swartlkk!

 

Good deal! Glad to help!!