Fourth Gear Replacement?

Tiny
AZDANNO04
  • MEMBER
  • 2008 CHEVROLET COBALT
  • 2.2L
  • 4 CYL
  • 2WD
  • MANUAL
  • 136,878 MILES
I am replacing my slave cylinder and figured I check to see if I needed to replace the fourth gear since I haven’t been to get into fourth gear. It just keeps grinding but after three or four times if I get it a certain angle it will catch, but I know one night I was trying to get it in fourth gear when I heard a loud noise and it felt like I may have chipped a tooth or more on that gear. If you can help me how to get to the fourth gear if that's what I need to replace or I was told the synchro something?
Saturday, May 6th, 2023 AT 6:50 AM

6 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,520 POSTS
Sure, here is a video that shows how to get the transmission out and I have included the transmission rebuild diagrams in the images below:

https://youtu.be/6N6b5F2ChyE

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Saturday, May 6th, 2023 AT 12:14 PM
Tiny
AZDANNO04
  • MEMBER
  • 307 POSTS
When I loosened the axle out on the driver’s side I captured over four quarts of transmission fluid.
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Saturday, May 13th, 2023 AT 4:56 PM
Tiny
KEN L
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Good job, you don't want that to run out all over the floor.
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Monday, May 15th, 2023 AT 9:47 AM
Tiny
AZDANNO04
  • MEMBER
  • 307 POSTS
Is there any other steps to proceed to the gears I was told that every gear has a syncro? Right now I am at the flywheel.
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Monday, May 15th, 2023 AT 12:29 PM
Tiny
AZDANNO04
  • MEMBER
  • 307 POSTS
Question about the quantity of fluid in the transmission? I thought it took less than 2quarts to top off the fluid. I just captured over 4 quarts when I removed the driver side axle.
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Monday, May 15th, 2023 AT 12:54 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,520 POSTS
Fluid Types

MANUAL TRANSMISSION FLUID

GM Part No. U.S. 88861800, in Canada 88861801
Capacities

MANUAL TRANSAXLE

Complete Drain and Refill. 1.7 quarts (1.6 liters)

NOTE: All capacities are approximate. When adding, be sure to fill to the approximate level. Recheck fluid level after filling.
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Tuesday, May 16th, 2023 AT 12:15 PM

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