I have a code of U1064

Tiny
FAW484
  • MEMBER
  • 2003 CHEVROLET IMPALA
  • 92,000 MILES
I have a code of U1064 ( Loss of Communication) Can you tell me what exactually this means. And how to fix it? I ve read that alot of BCM, s have been replaced needlessly. My security light is on. And also I have a code of B3128 and my door lock fuse keeps blowing.
Thursday, March 22nd, 2012 AT 2:47 PM

2 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
The U1064 indicates a communication error between the BCM and the PCM which would have to be investigated further.

The B3128 is a problem in the door lock circuit somewhere

CONDITIONS FOR SETTING THE DTC
The BCM detects a short to voltage on the door lock actuator lock control circuit, door lock actuator unlock control circuit or driver door lock actuator unlock control circuit for greater than 150 milliseconds.
Was this
answer
helpful?
Yes
No
+1
Thursday, March 22nd, 2012 AT 3:35 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Check the connector plug seems to be a common issue.
Was this
answer
helpful?
Yes
No
Thursday, March 22nd, 2012 AT 3:45 PM

Please login or register to post a reply.

Related U1064 Content