Communication Failure

5

Asked by 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

11,035

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.

4 out of 4 people think this is helpful.

Your Answer

Add photo

Related Questions

  • heat failure driver's side 2006 1 answer

    Loss of heat on Driver's side

    2006 Chevrolet Silverado 2500HD Work Truck 2dr Regular Cab LB

    -

    Maintenance & Repair

  • 2011 2500HD Vibration 39 answers

    I have had a shaking problem since I bought it. Dealer does not want to accept my complaint. First said it was tires. Next that is the way it drives . They don't want to accept take it in for servic...

    2011 Chevrolet Silverado 2500HD LT Crew Cab 4WD

    -

    Maintenance & Repair

  • what causes loss of communication with transmission? 5 answers

    speedometer stoped working and it will not change gear. check engine light is on and it also indicates a problem with the power steering. I had a diagnostics test ran at auto zone and that's what it r...

    2007 Chevrolet Cobalt

    -

    Maintenance & Repair

  • Engine failure 1 answer

    Driving on freeway and the ABS light comes on and engine died. What would cause this? Engine will not turn over.

    2001 Chevrolet Venture LS

    -

    Maintenance & Repair

  • Mechanical failures 4 answers

    My car has been not picking up speed ,then starting and not starting -leaving me stranded.I replace the MAP Sensor and its still doing that,Should I buy can and crank sensor are so forth. Its also...

    2005 Chevrolet Cavalier LS Coupe

    -

    Maintenance & Repair

Search Chevrolet Silverado 2500HD Questions

Chevrolet Silverado 2500HD Experts

#1 Steven Loeffler
Steven Loeffler
Reputation 420
#2 FordNut
FordNut
Reputation 280
#3 Tom Demyan
Tom Demyan
Reputation 260
View All

Related Models For Sale

Used GMC Sierra 2500HD
133 Great Deals out of 13,587 listings starting at $1,500
Used Ford F-250 Super Duty
488 Great Deals out of 42,909 listings starting at $2,850
Used Chevrolet Silverado 1500
2,701 Great Deals out of 148,970 listings starting at $995
Used Dodge Ram 2500
183 Great Deals out of 5,646 listings starting at $2,900
Used Chevrolet Silverado 3500HD
128 Great Deals out of 8,750 listings starting at $6,995
Used Ram 2500
198 Great Deals out of 30,358 listings starting at $9,499
Used Chevrolet Silverado Classic 2500HD
25 Great Deals out of 371 listings starting at $5,999
Used Chevrolet Silverado 2500
6 Great Deals out of 261 listings starting at $4,200
Used GMC Sierra 1500
1,174 Great Deals out of 58,309 listings starting at $2,495
Used Ford F-350 Super Duty
480 Great Deals out of 26,994 listings starting at $2,999
Used Ford F-150
3,443 Great Deals out of 206,231 listings starting at $1,273
Used Chevrolet Silverado 1500HD
18 Great Deals out of 287 listings starting at $4,938
Used GMC Sierra 3500HD
60 Great Deals out of 3,905 listings starting at $8,995
Used Toyota Tundra
706 Great Deals out of 28,578 listings starting at $2,500
Used Chevrolet Silverado 3500
34 Great Deals out of 641 listings starting at $6,200