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When downshifting, the 4WD gearshift pops into neutral

Tiny
MELISSAFARRIER
  • MEMBER
  • 1991 CHEVROLET SILVERADO
  • 252 MILES
Transmission is an automatic, with about 1200k miles on it First time this happened, was downshifting from overdrive, to 3rd, while towing a small 2 horse trailer, while decelerating up an off ramp, heard the tranny pop out of gear, and the 4wd floor shifter was in neutral. Next time it happened, two days later, was also pulling same trailer, level ground, this time with a horse in it, and was coming up on a 25 mph corner so downshifted from drive to, 2nd.
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Tuesday, August 21st, 2012 AT 12:05 AM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Bad syncro in the tranfer case. It most likely will need to be replaced

Roy
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Tuesday, August 21st, 2012 AT 12:50 AM
Tiny
MELISSAFARRIER
  • MEMBER
  • 2 POSTS
Thank you Roy! Mister man wanted me to ask since you brilliantly and promptly answered for us, what is your opinion on cost? Any experience there?

M
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Tuesday, August 21st, 2012 AT 5:21 PM
Tiny
ASEMASTER6371
  • MECHANIC
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1300-1400 for the case and 2 hours labor, plus fluid

Roy
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Tuesday, August 21st, 2012 AT 7:06 PM
Tiny
MELISSAFARRIER
  • MEMBER
  • 2 POSTS
Ahhh, so it is a whole new transfer case replacement job, I couldn't find just a synchro mentioned on Autozone's site! Thank you for your help!

M
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Tuesday, August 21st, 2012 AT 7:10 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Better to replace the case as you have a 3 yr 50k warranty and is cheaper.

Roy
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Tuesday, August 21st, 2012 AT 7:20 PM

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