Every thing ive done to it

1998 GMC JIMMY
160,000 MILES
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DARRELL5150
  • MEMBER
  • 3 POSTS
Have tried all that got it to shift to third but it downshifts within a matter of seconds or reves up. After changing fluid, filter, and front seal.
Dec 4, 2011 at 3:42 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
you have internal control issues. get a trans shop to check it for you. could be valve body or a failed clutch pack

Roy
Dec 4, 2011 at 3:43 PM
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RIVERMIKERAT
  • ✓Experienced Mechanic
  • 6,106 POSTS
SOunds like it has a malfunctioning shift solenoid.
Dec 4, 2011 at 3:44 PM
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