2012 Transmission issues

1268 Views 6 Replies 4 Participants Last post by helpmalibu, 11 mo ago

helpmalibu

Discussion Starter · 12 mo ago

I'm working on a 2012 Malibu with some serious transmission problems. There is no DTC's to use for troubleshooting. When placed into drive there is two loud clunking noises, none in reverse. The entire engine and transmission shakes. All mounts are good. Checked the fluid level, was good, but the fluid was dark as coal. After 3 complete fluid changes fluid is still coming out very dark! When driving the car it feels like there is no shifting action at all. Car is hard to get moving, once moving the car runs very smooth. I also pulled the TCM and cleaned all the solenoids, I think this transmission is toast. Anyone have any suggestions? The car has over 185,000 miles and I think this is the first time the fluid was ever changed!

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wpg2012malibu

· #6 · 11 mo ago

helpmalibu said:
A quick update! Problem fixed, I found that the TCM fuse in the engine compartment fuse box was blown. (no idea what caused that). After replacing the fuse the the hard shift into drive went away and driving the shifting was normal. Now to address the dark fluid issue, after 4 drain and flushes the fluid was still coming out very dark, fearing that the clutch disks were destroyed, I found a replacement transmission out of a 2011 at my local pick and pull for $90.00 installed it, reprogramed the ECM and TCM together and the car drives just fine.

Curious how difficult it was swapping the trans out and how did you reprogram the ECM and TCM?

Thank you

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