No engine light no communication no crank no start

Tiny
ADDY UMAR
  • MEMBER
  • 2004 CHEVROLET LUMINA
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 220,000 MILES
My car has a broken gear second and forth. I been driving that with a broken gear for a while so now I bought the gear from scrap of Lumina SS 2005. I took that gear went to mechanic gave him gear to change it I parked my car on machine he disconnected the battery he lifted it up changed the gear connected the battery try to start the car and the car did not start. It is cranking, but not starting. After that he connected computer it is showing no communication and no engine light at ignition on switch. I went to electrician he said my fuses are all working one said I have to change the whole computer with ignition. I changed it still did not work, but before it was showing security lock sign on but after changing now its off. Call the key guy to reprogram he said no security issue. I have checked relay also every thing is good and I was sitting in front of car while he was changing. Mechanic just changed gear and touched nothing else. What could be the problem? Please help!
Do you
have the same problem?
Yes
No
Monday, October 17th, 2016 AT 10:26 AM

8 Replies

Tiny
HMAC300
  • EXPERT
You disconnected the battery, it sets off security system then if you replaced ignition a double whammy and has to be programmed or it will never start. see link.

https://www.2carpros.com/articles/how-to-reset-a-security-system
Was this
answer
helpful?
Yes
No
Monday, October 17th, 2016 AT 12:14 PM
Tiny
ADDY UMAR
  • MEMBER
I have already tried this stuff nothing works and I told key guy to program it he said there is no check engine light no communication. How can I program it? Just now my friend told me he know some about this. I will take my car to his garage next week lets see what happens because I bought this car from him.
Was this
answer
helpful?
Yes
No
Monday, October 17th, 2016 AT 2:15 PM
Tiny
RENEE
  • ADMIN
Hi Addy,

Please get back to us with your friends findings so that we can help others experiencing the same issue.

Thank you for visiting 2CarPros and have a great rest of your day!

Kindest regards,

Renee
Admin
Was this
answer
helpful?
Yes
No
Tuesday, October 18th, 2016 AT 3:43 PM
Tiny
ADDY UMAR
  • MEMBER
Hey, iv checked it myself today actually my engine light mil is shutoff by my friend so it could not annoy I took obd scanner today and connected it and my computer was working fine an electrician told me he cannot do anything until check engine light appear I dont know he was noob maybe or usless I even went to key guy and he said we can not reprogram bcz the key is unlocking and locking and the security light also go away when u insert the key in car so its not the ignition fault and my friend told me the guy who placed the gear might didnt know how to adjust the neutral saftey switch also know as transmission range sensor bcz even before my car cranks on every gear if its on D, or R and my car is still cranking also so tomorrow I will go myself and check it I think I have to adjust it bcz the mechanic didnt adjusted any thing after changing the transmission.
Was this
answer
helpful?
Yes
No
Wednesday, October 19th, 2016 AT 5:49 PM
Tiny
KEN
  • ADMIN
There are some main system grounds that connect to the bell housing bolts I would start there to make sure they are connected.

Let me know what you find

Best, Ken
Was this
answer
helpful?
Yes
No
Wednesday, October 19th, 2016 AT 6:56 PM
Tiny
HMAC300
  • EXPERT
This has to be physically seen by a mechanic with a pro scanner so he can see what is going on auto parts scanners can't pic this type of thing up. You may have a U codes which means no communication and modules aren't talking to each other so car won't start.
Was this
answer
helpful?
Yes
No
Thursday, October 20th, 2016 AT 5:30 AM
Tiny
ADDY UMAR
  • MEMBER
Ya my friend checked it and the problem is transmission its burned from inside so its not spinning thats why the car is not starting I ve to bring the other transmission now hope that works.
Was this
answer
helpful?
Yes
No
Saturday, October 22nd, 2016 AT 8:41 AM
Tiny
KEN
  • ADMIN
Please let us know what you find so it will help others.

Best, Ken
Was this
answer
helpful?
Yes
No
Saturday, October 22nd, 2016 AT 11:51 AM

Please login or register to post a reply.

Recommended Guides