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1997 GMC Sonoma transmission

Tiny
MBSILVA03
  • MEMBER
  • 1997 GMC SONOMA
  • 4.3L
  • 6 CYL
  • AUTOMATIC
  • 205,384 MILES
When I put my truck in drive are. Reverse it jerks hard. When I driving down the road it jerks a tiny bit 2. Do I need a new tranny are can I easily fix the problem without ripping it apart? I also have a vibration when I'm traveling 45 to 55 mph. I'm not sure what it is can u give suggestions.
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Friday, November 14th, 2014 AT 6:13 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Many things can cause a rough shifting. Has the check engine light come on? Have you checked for trouble codes that could be trans related?
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Friday, November 14th, 2014 AT 8:22 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The vibration may be the u-joints in driveshaft so have it checked or look for rust around the seals. If you see rust then replace them. It can also be tire balance. For trans scan for codes then have a trans guy look at it as it may be a valve body problem.
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Friday, November 14th, 2014 AT 8:23 AM

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