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kenneth miller Posted on Feb 16, 2014
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Having a problem with my 99 tahoe 4x4 5.7 will shift up to 3rd and the when u come to a stop it wont shift back down to 1st gear till u shut off the truck just got it and it was doing the same thin

Now sometimes i could move the sifter down to1st gear it would work and some times it wont

1 Answer

Bill Boyd

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  • Cars & Trucks Master 53,816 Answers
  • Posted on Feb 16, 2014
Bill Boyd
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Joined: Jan 04, 2013
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Run the fault codes to determine if the electronics are working correctly. TCM servos and solenoids. Change the oil and filter and while the pan is off check the band and clutch pack adjustment. Have a pressure test done on the box to check for internal problems.

5 Related Answers

Anonymous

  • 386 Answers
  • Posted on Aug 10, 2009

SOURCE: my 88 chevy with 700r4 wont upshift from 3rd to 4th

you have a valve body problem, some of the speed sonsor controls are malfunctioning... need to get into the valve body... check fluid condition for dirty and burned condition...

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Anonymous

  • 124 Answers
  • Posted on Sep 04, 2009

SOURCE: goes into neutral and then shifts hard into 1st on slowdown

It sounds like your input clutch seals are rolling. Is the check engine light on. It could also be the pressure control solenoid could be causing the problem aswell

seanpwright

Sean Wright

  • 2045 Answers
  • Posted on Nov 07, 2009

SOURCE: I HAVE 99 ISUZU RODEO 2WD LOST 1ST & 2ND

if your close or over 100,000 miles, better to have the tranny rebuilt.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

Testimonial: "Thank you for the info.! Thats what I thought would be best as well, that way its done & has a warranty of some kind. Again T.Y., Jeff Dooley"

Anonymous

  • 667 Answers
  • Posted on Dec 14, 2009

SOURCE: have 65 mustang coupe, 200 engine, 2.77 manual 3

Check the shift rods for binding, also check the hole ends, are the bushings bad? Hope this helps, let me know

Anonymous

  • 829 Answers
  • Posted on Feb 21, 2011

SOURCE: 1994 GMC 1500 Sierra has to rev up 1st gear and

If reverse is ok then you have a bad shift solenoid b.There are two solenoids on the back of the valve body that are identical,it will be the one on the pasenger side.GM calls them the 1-2 and 2-3 shift solenoid but this is deceptive because it takes a combination of them being on or off to achieve every gear.Pull the pan, disconnect solenoids and check resistance across them with a volt meter.I think you are looking for less than 20 ohms but the bad one will be off the chart.Bad transmission controllers are very rare in a GM vehicle.I bet if you have codes pulled you will find a shift solenoid code.Good luck!

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