1997 Chevrolet K1500 Reverse Grinds

GMC C1500
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MJMMCHEVY
  • MEMBER
  • 1 POST
I own a 1997 K1500 4X4 Chevrolet Truck 71,000 Miles,with a manual transmission. My problem is I recently had the Master cylinder replaced, slave cylinder replaced, clutch and throw out bearing....I am having trouble getting the shifter into reverse from neutral it just wants to grind, but it does not do it if you go from 3rd, etc to reverse. Truck is not in motion, and I've made sure to have my clutch firmly pressed to the floor...Any ideas?

PS - Shifting in all the other gears is just fine........
May 26, 2006 at 1:47 AM
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BURRBRIAN
  • ✓Experienced Mechanic
  • 158 POSTS
I had the same problem on older cars, like a 67 elcamino I had, was told it was a synchronizer thing. That if I hit another gear before shifting into reverse this would not happen. And it didn't. I would guess that if you would just stick it in another gear first, you don't even have to let out on clutch, you won't be grinding anymore. Just takes a sec. to do and no hassle compared to having gears replaced. Good luck.
May 27, 2006 at 1:42 AM
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Suggested Repair

With the clutch fully depressed and the truck stopped, briefly select another gear before reverse so the input shaft stops spinning, then shift into reverse. This is consistent with a reverse synchronizer issue and can avoid grinding without immediate gear replacement if the workaround works.

Conversation Summary

The owner of a 1997 Chevrolet K1500 4x4 with a manual transmission recently replaced the clutch master and slave cylinders, clutch, and throw-out bearing. Reverse grinds when selected from neutral with the clutch fully pressed and the truck stopped, but not when coming from another gear; all other gears shift fine. The expert said this matches a synchronizer issue seen on older vehicles and recommended selecting another gear first, without releasing the clutch, before shifting into reverse.

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