2001 GMC Safari 6 cyl Two Wheel Drive Automatic 59000 miles
Every few months, we drive our Safari outside of the city. And, for the past 6-9 months (est), I've noticed upshift failures on such high-speed (70mph) excursions.
Initially, only the Overdrive was affected. At that time, I dutifully checked my fluid level with the engine fully warm. It was fine, color was red and clear, and there was no odor.
Today (a few weeks after my last excursion), it didn't initially shift out of 2nd gear, though eventually did so. I don't believe it ever went to OD.
Shifting (at least between 1st & 2nd) is smooth and quiet. The transmission engages immediately in both forward and reverse, and there is no slippage or noise.
After today's trip, I re-checked the fluid, and it remains fine.
have the same problem?
Wednesday, June 10th, 2009 AT 3:38 PM