Skip the auto shop - Our mechanics make house calls

Q: The truck cannot be started, u1000 code

asked by on

After going for a gas refill, I started the truck but it turned off. I tried to restart it, but it couldn't be restarted. The truck was shuddering. I had to push it home. I scanned it and got the U1000 code. Do you have any idea what is wrong with my truck? Thanks.

A: The code is for lost communication with the...

The code is for lost communication with the ECM’s data lines. Try to loosen and retighten the ECM connector ground and the battery negative cable ground to the body. Clean and check both these connections and clear codes and see if it starts. If you need assistance with this, get some help from a certified mechanic who can diagnose your starting problem and make the necessary repairs to get your car going again.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: My truck won't shift to reverse

There are a few things that can cause this. Check the transmission fluid level to see if it is low. Sometimes low transmission fluid levels will prevent the transmission from shifting into gear. If you still have forward gears, but...

Q: Truck loses power and tries to stall

Hey there. This is a common sign of a faulty ignition coil. Ignition coils are coated with a varnish-like insulation that becomes brittle over time after being stretched then contracted repeated as the copper beneath them expands and contracts at...

Q: When I turn on the heat, I get nothing but cold air no matter what the setting is.

The lack of heat being generated by your system may indicate a clogged heater core. The [heater core]((https://www.yourmechanic.com/services/heater-is-not-working-inspection) is a small radiator like unit that circulates the hot coolant from the engine through the heater core which then uses this...

Related articles

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.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.