No power to the computer No power to the scanner

5

Asked by Mar 30, 2017 at 12:33 PM about the Chevrolet Silverado 3500

Question type: Maintenance & Repair

I hooked up a scanner to the truck and nothing happened. The scanner didn't
even light up. the batteries are fully charged. Where does the power to the
computer come from? what wiring harness carries the power to the computer?

6 Answers

75,585

What year truck is this?

5

2003 chevy silverado 6.6 duramax

5

What wire harness carries power to the ECM?/?? I feel it is a frayed wire cause sometimes it starts and runs fine.

75,585

Bottom right #16 comes from the battery is the power to fire up your scanner.

5

OK git it working. The code is P0380 Glow plug Heater circuit A. This truck 2003 chevy Duramax 6.6 turbo HAS a GLOW PLUG CONTROLLER MODULE and a GLOW PLUG RELAY. Which one heats up the glow plugs??????????????????/

75,585

The relay just switches on power. But here is a video on this... https://youtu.be/WMimUyz8yR0

Your Answer

Silverado 3500

Looking for a Used Silverado 3500 in your area?

CarGurus has 510 nationwide Silverado 3500 listings starting at $3,995.

ZIP:

Chevrolet Silverado 3500 Experts

  • #1
    casper271
    Reputation
    90
  • #2
    John Saffrahn
    Reputation
    30
  • #2
    Chris Jozwiak
    Reputation
    30
View All

Related Models For Sale

Used Chevrolet Silverado 3500HD
133 Great Deals out of 11,962 listings starting at $2,750
Used Chevrolet Silverado 2500HD
345 Great Deals out of 33,034 listings starting at $2,499
Used Chevrolet Silverado 1500
2,703 Great Deals out of 196,294 listings starting at $699
Used Ford F-350 Super Duty
372 Great Deals out of 28,562 listings starting at $3,300
Used Dodge Ram 3500
64 Great Deals out of 2,284 listings starting at $5,999
Used GMC Sierra 3500HD
71 Great Deals out of 5,266 listings starting at $9,900
Used GMC Sierra 3500
5 Great Deals out of 220 listings starting at $9,900
Used Chevrolet Silverado Classic 3500
8 Great Deals out of 116 listings starting at $5,500
Used Ram 3500
194 Great Deals out of 20,796 listings starting at $11,750
Used Chevrolet Silverado 2500
6 Great Deals out of 220 listings starting at $4,495
Used Ford F-250 Super Duty
387 Great Deals out of 53,699 listings starting at $1,899
Used Dodge Ram 2500
158 Great Deals out of 5,324 listings starting at $2,500
Used GMC Sierra 2500HD
117 Great Deals out of 15,544 listings starting at $2,799
Used Chevrolet C/K 3500
209 listings starting at $3,995
Used Chevrolet Silverado Classic 2500HD
21 Great Deals out of 370 listings starting at $3,800

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.