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
  1. Home
  2. Questions
  3. 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: When I try to start my car, it wont start on the first try

Hi, thanks for writing in. I'd be happy to help. The fuel pressure should be checked to see if the pressure stays static after the vehicle is turned off. If the pressure drops to zero quickly within a few minutes,...

Q: I had the flex replaced on my manifold cat, and since then my car occasionally chokes when accelerating

Hi Robert. Thanks for contacting us today. Changes in exhaust - whether it's replacing a manifold or catalytic converter, will often impact the overall performance of a vehicle. Before the replacement was completed, your ECU was likely adjusting the fuel...

Q: Wipers not working.

Hi, I have ran across this many times on this vehicle. The most common cause of this is a bad connection at the wiper motor. There is a common issue with the terminals either coming loose or melting causing a...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...