How To Fix P0700 DTC Code On Chevy Silverado? 6 Reasons

The transmission control module (TCM) monitors transmission control sensors and actuators and interacts with the Engine Control Module (ECM) to notify it of any potential problems with the automated transmission control module.

The diagnostic trouble code (DTC) P0700 stands for “Transmission Control System Malfunction.” This can occur for a variety of reasons, and a mechanic must identify the particular cause for this code to be triggered in your circumstance.

Because this is a severe matter, it is best to be aware of it ahead of time. I’ll discuss What does p0700 code means on Chevy Silverado and how to fix it in this post at length.

How to Read the P0700 Code on Chevy Silverado?

Each point in the code focuses on a different set of issues. Before going through the why and how of the code, let’s take a closer look at it. The following provides an explanation.

  • The powertrain is the problem, as indicated by the first letter P.
  • The code is shown according to the SAE convention, as indicated by the second position 0 of the code. However, 1 denotes that the code is unique to the maker.
  • The presence of 7 in the third position signifies that a malfunction has been detected in your vehicle’s transmission controls
  • When the ECM reads information from the transmission system sensors in a vehicle, the TCM checks for any issues. If there is then 00 in the last two digits is raised.

Can You Drive Safely with the P0700 Code?

The P0700 code indicates a major problem with your vehicle that may prohibit it from shifting gears properly. This makes driving the car unsafe. It is advised that you do not run your car until it has been examined and fixed by a skilled technician.

Do not drive the car if it has shifting issues or is stuck in gear, as this can cause more damage and pose a safety threat on the road.

What Causes P0700 Code on Chevy Silverado? – 6 Reasons To Check

1. TCM Failure

Transmission control module failure symptoms include difficulty shifting gears, getting stuck in gear, and decreased gas mileage. However, there are several more warning signals to be aware of.

2. Short Circuits in the Wiring

A short circuit is a wire harness problem in which electricity is shunted or shifted between separate circuits before reaching its final destination. This can create a variety of issues, ranging from causing your car’s engine to splutter to outright disabling it.

3. Transmission Problems

If your car refuses or struggles to shift gears, you are most likely dealing with a gearbox problem. You may also notice the issues listed below.

  • Noises of a Burning Smell When set to Neutral
  • Shifting Gears
  • Clutch Dragging
  • Fluid Leaking

4. Faulty Shift Solenoids

Top signs that your solenoids aren’t working properly include: When trying to change gears, you encounter a delay and a tugging or slipping sensation. As you slow down, the car won’t downshift.

5. Engine Coolant Sensor Failure

The coolant temperature switch may occasionally malfunction and begin permanently delivering heated signals. As a result, the computer incorrectly counterbalances the signal, which leads to the engine misfiring or overheating.

6. Transmission Fluid Contamination or Low Levels

Sludge and varnish deposits can actually block filters and impede the flow of transmission fluid when new fluid is added to the contaminated fluid.

A grinding sound can be produced when gears miss, which is caused by low fluid levels.

How To Fix Chevy Silverado’s P0700 Code?

The first step with a P0700 code is to get it thoroughly diagnosed to see what is causing the automatic gearbox to malfunction. The major pitfall to avoid is diagnosing a P0700 error code based on the symptoms of the vehicle rather than what the code implies.

A professional must be involved in tasks like transmission repair. The typical fixes consist of:

  • Replacing a Solenoid That Is Broken or Not Working
  • Transmission Control Module Replacement (TCM)
  • Changing any defective wires
  • the transmission valve body’s restoration

Other Symptoms of Getting P0700 Code on Chevy Silverado

The common symptoms of Chevy Silverado are:

  • The check engine light is illuminated
  • Uncoordinated or rough moving
  • Shifting irregularly
  • The engine stalls
  • The vehicle only has two gears
  • Your fuel efficiency declines mysteriously

How Much Does It Cost to Fix the P0700 Code?

Repair prices might vary greatly depending on what is causing the issue that results in a P0700 code. Repair expenses, for instance, might range from $840 to $900 if the issue is brought on by a malfunctioning transmission control module.

However, if the transmission itself is the problematic part, repair prices may be significantly greater and may even exceed $5000 in rare cases. Finally, repair prices might range from $320 to $900 if you’re fortunate enough to merely have a valve body issue.

Frequently Asked Questions (FAQs)

How do you fix the P0700 code?

Some potential options include:
Adding or changing transmission fluid.
The wire harness must be repaired or replaced.
TCM is being replaced.
But the best option is to take it to a mechanic if you don’t know what you are doing.

How do you reset a transmission control module?

Here’s how to reset a Chevrolet transmission control module: Turning the Key Step on the gas pedal Continue to Wait Turning Off the Key Taking Off the Gas Pedal Wait once more And done

Is p0700 serious?

The P0700 code indicates a major problem with your vehicle that may prohibit it from shifting gears properly. This makes driving the car unsafe. It is advised that you do not run your car until it has been examined and fixed by a skilled technician.

What causes a transmission control module to fail?

Voltage overload, a short in the solenoid or actuator circuit, water shorting out the circuits, vibration, and thermal stress can all cause damage to the control module.

How much is it to fix a P0700 code?

The cost of repairing this problem will be determined by the variables that are generating the difficulties. The typical cost of replacing your car’s TCM is $500 to $900. Labor normally runs from $75 to $150 per hour, while the part itself costs between $450 and $700.


The P0700 is frequently misdiagnosed since it is assumed that if the code does not return, the problem has been resolved.

P0700 is frequently associated with one or more shift solenoid codes. This might be as simple as low fluid owing to a transmission leak or, on the other end of the spectrum, a transmission breakdown.

When a gearbox fails, metal flakes in the fluid are not unusual. These flakes clog shift solenoids and valve bodies, resulting in the P0700 error code.

Before performing costly repairs, look for all of the codes and data related to the P0700 code. Sometimes the transmission fluid level or a wire must be changed. Of course, the transmission might be deteriorating and has to be fixed.

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