Will not Move after replacing transmission

JOSHUA 101

MEMBER
1999 GMC
5.3L
V8
4WD
AUTOMATIC
1,000,000 MILES

Serria will not move after replacing transmission. It will not go into any gear and the pump is pumping good. It will not move in any gear torque converter is working. I cracked a transmission line and it is pumping good.

Saturday, June 17th, 2017 AT 10:15 AM

9 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,513 POSTS

Hello,

Did you replace the gear range selector switch with the new transmission? Here is its location

These switches go out all the time.

You should also check the fuses and for trouble codes.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

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

Please run some tests and get back to us so we can continue helping you.

Cheers, Ken

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Monday, June 19th, 2017 AT 11:45 AM

JOSHUA 101

MEMBER
7 POSTS
1999 GMC SIERRA
5.3L
V8
4WD
AUTOMATIC
1,500,000 MILES

I put a 1998 4L60E into my truck. I had to change my torque converter and bell housing and still not going anywhere. I am no mechanic and do not know what else to do. Please help me. It is the only ride. I am stumped.

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Monday, June 19th, 2017 AT 3:19 PM (Merged)

JOSHUA 101

MEMBER
7 POSTS

I do not have access to a scanner either. I have got to get it going. Please

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Monday, June 19th, 2017 AT 3:19 PM (Merged)

HMAC300

MECHANIC
48,601 POSTS

You may have broken the oil pump. If torque converter was not in all the way this happens all the time. The converter is not in all the way and then transmission is put in and bolted up converter pushes against pump and breaks it. That is what is more than likely wrong. Unless low on fluid.

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Monday, June 19th, 2017 AT 3:19 PM (Merged)

JOSHUA 101

MEMBER
7 POSTS

It has plenty of fluid at radiator and there is a small stream when idle and stream gets bigger when I get it gas at cooler.

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Monday, June 19th, 2017 AT 3:19 PM (Merged)

JOSHUA 101

MEMBER
7 POSTS

I have put thirteen quarts of fluid in it also it reads full.

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Monday, June 19th, 2017 AT 3:19 PM (Merged)

HMAC300

MECHANIC
48,601 POSTS

At idles where your radiator is should be about 30 psi coming from torque converter. I am probably sure you have done what I first stated.

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Monday, June 19th, 2017 AT 3:19 PM (Merged)

JOSHUA 101

MEMBER
7 POSTS

Could I just not have a big enough torque converter the pump is pumping everything went together with no problem. I know the converter pushed into place. I thank you for your time this has gotten me way upset I am far from a mechanic and when I get this fixed I will pay a real mechanic for now on. I am about $600.00 in the hole now and just cannot afford to hire one now please. Got to get it going. I had to change the torque converter and bell housing so far what else?

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Monday, June 19th, 2017 AT 3:19 PM (Merged)

HMAC300

MECHANIC
48,601 POSTS

Put a pressure gauge where picture shows and start truck and see if you have any pressure or not. If not then drop pan and see if filter is in all the way if it is not then check for two o-rings where it goes in if no pressure then it is a bad transmission to begin with. By the way this should only take eleven quarts to fill completely so you may have too much oil in it. And actually if it was already used then it may take less.

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Monday, June 19th, 2017 AT 3:19 PM (Merged)