Question on 4l80E - Page 3

txgp17 · 07-28-2009, 05:03 PM

UPDATE
I took it to my local GM dealer so he could use a Tech2 device to scan the PCM, which revealed P1870, which translates to "Transmission Component Slipping" in the Service Manual. That was something I already knew, I just didn't know why.

They dropped the pan and valve body and said my Torq-Conv was shot.

I've ordered a replacement from Hughes Performance (part# 25LFuel), and a Premium Overhaul kit (part# HP2589K).

Also, the salesman at Hughes recommended Castrol Type F fluid, rather than Dexron. He also recommended not using any synthetic at all. I'm still on the fence about that one.

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07-28-2009, 05:03 PM	#21
txgp17 Junior Member Join Date: Jul 2009 Location: Greensboro, NC USA Posts: 5	UPDATE I took it to my local GM dealer so he could use a Tech2 device to scan the PCM, which revealed P1870, which translates to "Transmission Component Slipping" in the Service Manual. That was something I already knew, I just didn't know why. They dropped the pan and valve body and said my Torq-Conv was shot. I've ordered a replacement from Hughes Performance (part# 25LFuel), and a Premium Overhaul kit (part# HP2589K). Also, the salesman at Hughes recommended Castrol Type F fluid, rather than Dexron. He also recommended not using any synthetic at all. I'm still on the fence about that one.