Communication Failure
5

Asked by Mason04 May 17, 2009 at 09:37 PM about the Chevrolet Silverado 2500HD

Question type: Maintenance & Repair

When I hook up a computer to my truck to figure out some problems all the computer tells me to is to make sure the ignition key is on. I turn the key on and I still get the same reading from the computer. Anybody know what might be the problem so I can get a diagnostic reading??

1 Answer
20,115

Mike answered 15 years ago

Go to your basics - There needs to be power at the OBD2 connector for the scanner to negotiate with the on board computer system - Check fuses. If all are good check pin 16 for power and 4/5 for ground. If all checks out your scnner connection might be corroded or not connecting properly to the connector on the vehicle.

12 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • Communication Failure 1 Answer

    When I hook up a computer to my truck to figure out some problems all the computer tells me to is to make sure the ignition key is on. I turn the key on and I still get the same reading from the compu...

    Chevrolet Silverado 2500HD

    -

    Maintenance & Repair

  • Lost communication with TCM 2 Answers

    re the fusible links or anything else I can go to that will repower the TCM ? I have a feeling that one of the guys touched the TCM with a hot positive cable during the jump start and shorted somethin...

    2006 Chevrolet Silverado 2500HD

    -

    Maintenance & Repair

  • Window Failure Chevy Silverado 2500 Diesel 1 Answer

    I recently purchased a chevy silverado 2007 duramax 6.6 and was told the windows were not working. The drivers side window and drivers side rear window work, however the passenger side windows don't...

    2007 Chevrolet Silverado 2500HD Work Truck Crew Cab 4WD

    -

    Maintenance & Repair

  • heat failure driver's side 2006 1 Answer

    Loss of heat on Driver's side

    2006 Chevrolet Silverado 2500HD Work Truck LB RWD

    -

    Maintenance & Repair

  • Chevy silverado 2500 HD Window Failure 3 Answers

    I recently purchased a 2500 HD diesel Chevy Silverado 2007 V6.6 truck, and for some reason I am having faliures on the windows. The drivers side window works fine, yet when I try to lower or higher ...

    2007 Chevrolet Silverado 2500HD Work Truck Crew Cab 4WD

    -

    Maintenance & Repair

Shortcuts

Search Chevrolet Silverado 2500HD Questions

CarGurus Experts

  • #1
    GuruXPQGJ
    Reputation
    1,430
  • #2
    Reelin68
    Reputation
    1,200
  • #3
    Steven Loeffler
    Reputation
    1,160
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 2500HD
13 Great Deals out of 1,617 listings starting at $10,800
Used Chevrolet Silverado 1500
195 Great Deals out of 5,967 listings starting at $2,975
Used Ford F-250 Super Duty
24 Great Deals out of 1,201 listings starting at $8,995
Used RAM 2500
55 Great Deals out of 2,192 listings starting at $14,962
Used Chevrolet Silverado 3500HD
10 Great Deals out of 891 listings starting at $19,495
Used GMC Sierra 1500
143 Great Deals out of 7,206 listings starting at $3,950
Used Dodge RAM 2500
24 listings starting at $9,975
Used Ford F-150
321 Great Deals out of 15,103 listings starting at $1,712
Used Ford F-250
6 listings
Used Ford F-350 Super Duty
35 Great Deals out of 2,591 listings starting at $8,888
Used GMC Sierra 3500HD
17 Great Deals out of 1,391 listings starting at $11,950
Used Toyota Tundra
34 Great Deals out of 1,190 listings starting at $8,500
Used RAM 1500
457 Great Deals out of 15,784 listings starting at $5,000
Used Chevrolet Silverado 3500
4 listings
Used Chevrolet Tahoe
20 Great Deals out of 904 listings starting at $11,900

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. Content will be removed if CarGurus becomes aware that it violates our policies.