No power on line 1044 going to A1 on radio side?

Tiny
LEESTRUCK
  • MEMBER
  • 2007 CHEVROLET SILVERADO
  • 6.6L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 258,000 MILES
I have no power when key is in any on/run position on line 1044 going to A1on the radio. I want to check the line from the BCM but do not see it on any drawings.
SPONSORED LINKS
Do you
have the same problem?
Yes
No
Tuesday, January 17th, 2023 AT 6:44 AM

2 Replies

Tiny
BORIS K
  • EXPERT
Hello,

All wiring diagrams I look at show current track 340 to pin A1, red/white wire.
Constant 12V supply from fuse F43 or F41, 15A, in engine fuse block
See image below.

How to:
https://www.2carpros.com/articles/how-to-check-a-car-fuse
and
https://www.2carpros.com/articles/how-to-check-wiring
and
https://www.2carpros.com/articles/how-to-use-a-voltmeter
and
https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Cheers, Boris
Image (Click to enlarge)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, January 17th, 2023 AT 7:46 AM
Tiny
LEESTRUCK
  • MEMBER
I found what I was looking for. A1 from line 1044 goes to the SP205 turning into line 1037 going to the serial port of the BCM. Bcm should push a 12vdc once key is turned on thus providing the necessary data to turn on the radio. I will pin my line once I get some free time from work.
Was this
answer
helpful?
Yes
No
Thursday, January 19th, 2023 AT 3:36 AM

Please login or register to post a reply.

Related Radio Content

Radio Head Unit
VIDEO
Radio Head Unit
Instructional repair video
VIEW MORE

Sponsored links