Skip the auto shop - Our mechanics make house calls

Q: What would cause the motor not to crank and the dash lights to stay on? 2005 Chevy Silverado 2500

asked by on

I changed the motor in my Chevy Truck and now the dash lights and headlights won't go off and my truck won't crank
My car has an automatic transmission.

Hi - check fuses first, then check the engine wiring harness, especially the starter wiring, for correct re-connection. The behavior suggests either no engine-to-chassis ground, or incorrect wiring. Either or both appear to be "back-feeding" 12 volts to the dash lights and headlights. If you are unable to make headway, and wish to have some assistance, I would recommend an inspection of the engine wiring by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  • Home
  • Questions
  • What would cause the motor not to crank and the dash lights to stay on? 2005 Chevy Silverado 2500

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Van cranks but wont start

If the starter motor is turning the engine over rapidly, at sufficient RPM, but the engine does not catch and run, that means that there is an ignition, fuel, air induction, or mechanical fault in the engine that will have...

Q: O2 sensor causing misfire.

Hello. If you have a misfire, most of the time that will set a misfire code. If the only code that comes up is an O2 sensor code then you may have a bad oxygen sensor or you might have...

Q: Truck wont turn on

Hi there - the symptoms you describe suggest the alternator may not be charging properly, or the battery may have failed. Many auto parts stores will check these for you for free on a time-available basis. If that is not...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.