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Tahoe & Suburban The power, space, and brutal towing ability make the Tahoe and its longer sibling, the Suburban, arguably the best full size SUV's on the market today.

2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

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Old 05-21-2010, 08:38 AM
CF Beginner
Join Date: May 2010
Posts: 1
Default Po785

Am getting a PO785 DCT code and blew up the first transmission. Have since replaced the transmission and am having the same difficulties as the first before it went. I ohm'd out the solenoids and they all checked good. Have gotten a lot of information from this site saying they could still be mechanically failing and need to come up with a way to check that.
My question is also as follows; Had the battery disconnected for over a week. Was hoping that this would reset the PCM fault codes but am not sure. Could the original problem have this transmission still in "limp" mode? Am about to start tracing my electrical lines as well this weekend so any information on that would eb especially useful. TY for this site and the information I have gotten so far
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Old 05-21-2010, 08:40 AM
maxxman04's Avatar
CF Veteran
1990 Chevrolet Camaro
Join Date: Dec 2009
Location: kentucky
Posts: 1,854

need to know what you're working on.
rednekper4mince. keepin duct tape and bailing wire in business.
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Old 05-23-2010, 06:02 PM
73shark's Avatar
Join Date: Apr 2006
Location: KC, MO area
Posts: 8,537

Welcome to the forum.

Did you clear the code when you replaced the tranny?
2010 Sheer Silver Tahoe LTZ (all options but sunroof, power boards), GM (body color flaps, rear console, 3rd row mat, 2-Way Remote, chrome gas door, Esky rack), Eagle Eye LED tails, SLP dual tip exhaust, Silver bow-ties/rear wiper, Catch-All mats, AlphaTherm washer fluid heater, Putco chrome mirror covers, silver calipers, board chrome trim, tint, GMPP Major Guard

2007 Black Tahoe LTZ (Sold),
(GM flaps-$15, Lund Step Tubes-$80-For Sale)
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Old 05-23-2010, 06:02 PM

10, 2007, 97, 98, aveo, chevrolet, chevy, code, gm, limp, mode, po785, resetting, silverado, tahoe, truck

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