1995 Chevy Suburban It won't shift into reverse& won't

JSFREEMAN4

MEMBER
1995 CHEVROLET SUBURBAN
V8
4WD
AUTOMATIC
196,000 MILES

I had the vehicle in 4wd and I thought I had it out but I had gone probably 40+ miles after I thought I had it out, and I heard a loud clunk and the truck would not go over 20mph going forward and now will not shift into reverse at all!

Monday, December 29th, 2008 AT 2:16 PM

5 Replies

JAMES W.

MECHANIC
2,394 POSTS

A couple questions:
Do all the forward gears seem to work ok?
What gear were you in when you heard the "bang", low, 2nd, 3rd, etc?
Does the trans even attempt to backup?
If you pull the transmission pan we will be able to tell a lot by what's laying in the pan. All in all, it doesn't sound good.

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Tuesday, December 30th, 2008 AT 10:40 PM

JSFREEMAN4

MEMBER
3 POSTS

1. The forward gears all seem to work. But it would not go over 20mph in any forward gear.
2. When I heard the bang, I was in Drive. I was not in 3, 2, or 1st. I was probably going about 15-20mph.
3. I will not attempt to go into reverse at all.
4. I pulled the pan and the fluid is good. I did see a small amount of shavings, though.

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+2

Thursday, January 1st, 2009 AT 1:03 PM

JAMES W.

MECHANIC
2,394 POSTS

Does it seem like the trans is staying low gear, won't shift into 2nd or 3rd? A small amount of "small" shavings is not uncommon with a trans almost 200K on it. Reverse gear uses the low clutch plus a reverse planet gear to back up. If the "bang" you heard was the reverse planet breaking, you have major transmission problems. The reverse planet gear is the last part to come out of the trans case when disassembled.

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Friday, January 2nd, 2009 AT 11:23 AM

JSFREEMAN4