My transmission will not engage why - Does not go into gear?

Tiny
CHASEW3367
  • MEMBER
  • 2018 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 54,000 MILES
Well, when I put it in reverse it's like I have to give it a little more gas than usual to get it to start backing up. Like I can feel it catch then it's fine and sometimes it does the same in drive as well.
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Monday, February 24th, 2020 AT 3:58 PM

62 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good afternoon,

I would change the fluid and filter. You may have a partially clogged screen in the pan.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Scan for codes as well

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.
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Monday, February 24th, 2020 AT 4:28 PM
Tiny
CHASEW3367
  • MEMBER
Is this something I can do or need a mechanic to do it?
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Monday, February 24th, 2020 AT 4:30 PM
Tiny
ASEMASTER6371
  • EXPERT
You can do this yourself. You will need to put it up on jack stands and get a large drain pan to drain the fluid.

Then release the pan and the filter will be inside. It just pulls down. The seal in the valve body will have to be changed as well.

Roy
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Monday, February 24th, 2020 AT 4:40 PM
Tiny
CHIP ATCHLEY
  • MEMBER
  • 2008 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
When I had it in cruise control at 45 mph. I stopped at light. When I went to go again truck was slow to take off even with applying more throttle. Around 15 mph it cleared up. On way home same day from work, it would only go 40 mph. Now it only goes about 20 mph and dose not shift to anything. Just stays in first as far as I can tell. Took to transmission shop. Drove it with computer hooked up and mechanic says it is commanding all the gears, 2, 3, 4 and is getting correct throttle response. They only work on internal parts and told me to take somewhere for wiring issues. So at home I disconnected the round grey plug on passenger side of trans. And it acts the same and still no codes except with plug unconnected the shift position indicator on dash is not illuminated.

So, frustrated, I went out and checked all connections again and pushed them in tight. Drove truck slowly at first and felt it shift this time into second. So kept going and when it went to shift into third it missed and tacked up like neutral. This was just in "D". So I stopped and started again in manual first. Then manual second and it hesitated and slid into second kinda mushy. So kept going and then manually into 3rd. Again it tacked up but I let off the gas and reapplied the gas and it caught third. So then I got it up faster and went to "D" and it went to "OD". Came up to light and stopped. Green light still in "D" and it was still in "OD" or High gear so I manually went to first and it shifted to first. Then manually to second and it went. Then manually to third and tacked up like neutral and I let off gas and re applied but it did not catch third. So I manually went to second and tried to shift to third again. This time it was trying to grab third, real slippy mushy so I let off gas and re applied and it caught third. Then it went to "OD". Kept going around came to light and had to do same scenario when light turned green. Basically had to do it every time I slowed down (manually shift). A few times second was slipping too but let off gas and reapply and it would catch. All shifts occurring around 2700 to 3500 rpm. By the time I pulled in driveway trans temperature was 256. It had been sitting two days prior to me doing this today.

Any thoughts?

4l60e Vin J
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
KEN L
  • ADMIN
So the gear selector light are not lighting up? This is telling me the gear range sensor is out and needs to be replaced. here is a guide to help. This guide can help us fix it

https://www.2carpros.com/articles/automatic-transmission-problems

Check out the diagrams (below). Please let us know what happens.
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
CHIP ATCHLEY
  • MEMBER
Well, I got under the truck and removed the trans pan. Thinking I would replace fluid/filter and see if there were any shavings in the pan.I checked the trany dip stick previously as did the tranny shop. Mentioned wift of a burnt smell but nothing they thought was too too bad. Anyway so I pulled the pan and it was full of silver stuff and the fluid was black and smelled worse than from dip stick. Evidently the car lot I bought it from had been dumping the stuff in there to keep it running. I had the truck 2 weeks before all this started. No warranty, "as is" and I regret it now. I took a chance and it did not pay off. Now my son is looking for a 1500 and we will approach it much differently. I drove my truck to tranny shop (in one gear) and dropped it off. I grew up with this guy, same guy who put computer on it and saw it was commanding to shift. So, 1850 plus tax and a new hayden 1679 cooler, truck is running great. He told me the pump stater was broken and killed the input drum. Not sure if stater is right because it was a text and he actually said "stated" so im assuming stater but looked like a gear. See Pic. Think the gunk the guy put in it caused the no code. And I think the pump gear/stator broke on way to his shop. Just under $2,200 in all. He put the corvette servo in it and upgraded sun gear. Basically whole new planitary, which is in the kit I guess. Im not a transmission guy so dont hold me to it. :)
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
KEN L
  • ADMIN
Yep that will do it, broken stater good find on that. Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help.
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
JLMEEK
  • MEMBER
  • 2008 CHEVROLET SILVERADO
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
My truck listed above will not go into gear. When I shift to reverse or drive it does not go into gear.
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Good evening,

Did you verify the transmission level?

https://www.2carpros.com/articles/automatic-transmission-problems

When was the last time you changed the fluid and filter? A clogged filter will do this.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Are there any codes set?

Since it is 4 wheel, does it go into any gear in any selection on the transfer case?

If all else is good, either the front pump or the torque converter has failed.

Roy
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
JLMEEK
  • MEMBER
I have he led the fluid. Looking at the bottom when trying to shift the gears below are not moving at all.
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
JLMEEK
  • MEMBER
I have checked the fluid and it s good. The gears below are not moving when someone is shifting.
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Do you mean the linkage is not moving at the transmission? That would indicate the cable has failed.

I attached the procedure for you and some pictures below for you.

Roy

3. Remove the clips on the cable from the floor panel reinforcement.

ImageOpen In New TabZoom/Print

4. Ensure the transmission manual shaft is positioned in mechanical park.
5. Remove the retainer that secures the cable to the bracket.

ImageOpen In New TabZoom/Print

6. Remove the cable clip on the transfer case, if equipped.
7. Remove the range selector cable end (2) from the transmission range selector lever ball stud (1).
8. Depress the tangs and remove the cable from the bracket.
9. Lower the vehicle.
10. Ensure that the steering column shift lever is still in the park position.
11. Remove the drivers seat. Refer to Front Seat Replacement - Bucket.
12. Pull back the carpet and insulation around the driver's area.
13. Remove the instrument panel knee bolster. Refer to Knee Bolster Replacement (with RPO SLT) Knee Bolster Replacement (without RPO SLT).

ImageOpen In New TabZoom/Print

14. Remove the retainer securing the cable to the steering column.

ImageOpen In New TabZoom/Print

15. Remove the cable end from the steering column ball stud.
16. Depress the tangs and remove the cable from the steering column bracket.

ImageOpen In New TabZoom/Print

Important: Avoid unnecessary twisting/bending of the range selector cable when removing the cable from the support.

17. Remove the range selector cable from the support.

ImageOpen In New TabZoom/Print

18. Remove the cable grommet from the floor panel.
19. Remove the cable from the vehicle.
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
JLMEEK
  • MEMBER
How much would this cost?
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
BBANDERSON
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • 6.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
I have the truck listed above (SS model). I was driving it one day, and it acted like I put it in neutral with a bang. Now if I put it in a gear I have to keep revving it up like to build pressure and it starts driving, then its like I lose pressure again.
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Good evening.

How long has it been since you changed the trans oil/filter? A clogged filter will cause this issue.

Roy

https://www.2carpros.com/articles/automatic-transmission-problems

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
The cable is about 100.

The labor is 1.2 hours or around 125.

Roy
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
BBANDERSON
  • MEMBER
I have not yet. I just bought the truck maybe got three hundred miles out of it. Fluid looks a little brown but not bad.
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Okay, it should be a nice red color. I would start there and change it a couple of times. When you change it you just drain the pan. You still have seven or eight quarts in the converter that does not come out.

That is why I would do it again after about 1,000 miles.

Roy
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
BBANDERSON
  • MEMBER
Okay, I will give it a try thanks.
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)
Tiny
KELLIS@DEERFIELD
  • MEMBER
  • 2004 CHEVROLET SILVERADO
  • 250,000 MILES
Light comes on but doesn't engage?
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Thursday, May 6th, 2021 AT 10:13 AM (Merged)

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