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1994 GMC Safari No Overdrive

Tiny
ERIC NATIVIDAD
  • MEMBER
  • 1994 GMC SAFARI
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 157,000 MILES
I was wondering if any of you encountered this problem of no over drive shifting and delay down shift during a stop. Is there any controller for the tranny that needs checking.
Sunday, June 28th, 2009 AT 5:53 PM

1 Reply

Tiny
FATBOY46
  • MEMBER
  • 5 POSTS
TCCS- torque converter control switch. Switch is cheap. Labor is not. Switch locks up the TC to give better mileage. When it doesnt work properly, it tries to stall when you stop, like having the clutch engaged in a standard shift. Or it will suddenly release. That would explain the slow down shift. And the no-OD shift.
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Sunday, June 28th, 2009 AT 6:11 PM

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