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My GMC Sierra '07 is not always accelerating like it should, when diagnoses was done it came up with several codes:P0740, P0758, P7085
How can I repair this at home? Funds are tight at the moment!

Vehicle: 2007 gmc sierra, 4.8

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P0740 Torque convertor clutch circuit (TCC) malfunction

P0758 Shift solenoid "B" stuck on

P0785 Shift solenoid circuit electrical

Poor electrical connection ,or one one solenoid are shorting out, electrcal problem will cause P0785 Check in the engine fuse box check fuse number listed as TRANS ING 1 fuse see if that s open, if this is good you are going to have to replace the solenoids, in the transmission.

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