Question about 2005 GMC Sierra

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From a stop engine is running fine (not over speeding) but vehicle starts slowly as if on wrong gear

Get up to speed and everything is normal get codesp0740,p2761,p0785

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Code p0740 refers to torque converter clutch (TCC) solenoid --circuit malfunction Causes---Wiring---TCC solenoid--- ECM/TCM
Code p2716 refers to transmission fluid pressure(TFP) solenoid D-electrical Causes---Wiring---TFP solenoid.
Code p0785 refers to shift/ timing solenoid circuit malfunction Causes---Wiring---shift/timing solenoid---ECM?TCM The common fault here appears to be the TCM ( transmission control module) have it check out..

Posted on Apr 07, 2013

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

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Posted on Jan 02, 2017

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oldracerbill

  • 91 Answers

SOURCE: Tranmission will not shift into next gear from

Try changing the transmission fluid and transmission fluid filter. It is a fairly easy but kind of messy job. Just buy the new fluid and filter, Grab your metric socket set and go at it. NEVER WORK UNDERNEATH A HOT VEHICLE. You have to pull the transmission pan to do this job. When you break the gasket seal several quarts (liters) of transmission fluid will cascade down on you. Be ready for it. Don't forget that when it stops draining there is still a lot of fluid left in the pan. When you finish cleaning up the fluid clean the gunk out of the pan. Install the new filter and reinstall the pan with a new gasket. Do not over torque the pan or filter bolts. If you strip them out or break them off you will need professional help to repair it. Refill the transmission with fluid. It should take six or seven liters.

Posted on Mar 20, 2010

ourhowse

Dar

  • 2007 Answers

SOURCE: VEHICLE SPEED SENSOR

Check the vacuum line to your modulator valve on the tranny. It may have popped off when you hacked your nut.

Posted on May 04, 2009

Anonymous

  • 14 Answers

SOURCE: 2000 GMC Jimmy slow acceleration until 3000 rpms

you could check the fuel pump i recently had some problems with my punp after i replaced it where i would get to 3k rpms and it would sorta shut down and wouldnt go past it untill i let off the pedal

Posted on Nov 18, 2008

Anonymous

  • 337 Answers

SOURCE: lose power when i punch it to passing

You could try fuel filter or just your basic tune up.

Posted on Dec 07, 2008

Anonymous

  • 1392 Answers

SOURCE: 2001 yukon xl 6.0 ltr engine-transmission problem

It sounds like it may be an electrical problem. Maybe a problem with the TCM, or a sensor.

Posted on Mar 09, 2009

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