AutoCodes – GMC – P183E GMC

P183E GMC Code - Internal Mode Switch 2 Invalid Range

Quick Answer

The automatic transmission manual shift shaft position switch assembly, also called the internal mode switch assembly, contains two sliding hall-effect switch assemblies attached to the control valve body within the transmission. Common causes include Faulty Manual Shift Shaft Position Switch Assembly, Manual Shift Shaft Position Switch Assembly harness is open or shorted, Manual Shift Shaft Position Switch Assembly circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P183E GMC indicates Internal Mode Switch 2 Invalid Range.
Common causes: Common causes include Faulty Manual Shift Shaft Position Switch Assembly, Manual Shift Shaft Position Switch Assembly harness is open or shorted, Manual Shift Shaft Position Switch Assembly circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,635

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P183E GMC Description

The automatic transmission manual shift shaft position switch assembly, also called the internal mode switch assembly, contains two sliding hall-effect switch assemblies attached to the control valve body within the transmission. The 9 outputs from the switches indicate which position is selected by the transmission manual shaft. Four outputs (A, B, C, P) are range selection inputs to the transmission control module (TCM). Five outputs (R1, R2, D1, D2, S) are direction selection inputs to the hybrid powertrain control module. The Range input signals are represented as TCM scan tool parameters, Internal Mode Switch A, B, C, and P. The Direction input signals are represented as hybrid powertrain control module scan tool parameters, Internal Mode Switch 2 - R1, R2, D1, D2, and S. The input voltage at the modules is high when a switch is open and low when a switch is closed to earth. Each control module independently supplies power and earth to its respective switch assembly.
The hybrid powertrain control module is internal to the power inverter module, often referred to as the drive motor generator power inverter module and is not serviced separately.

OBDII Code P183E GMC - Internal Mode Switch 2 Invalid Range - AutoCodes.com — P183E GMC Code - Internal Mode Switch 2 Invalid Range

What does this mean?

What are the Possible Causes of the DTC P183E GMC?

Faulty Manual Shift Shaft Position Switch Assembly
Manual Shift Shaft Position Switch Assembly harness is open or shorted
Manual Shift Shaft Position Switch Assembly circuit poor electrical connection

How to Fix the DTC P183E GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P183E GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P183E GMC Code

1. What are the common symptoms of OBDII code P183E GMC (Internal Mode Switch 2 Invalid Range)?

The common symptoms include issues with shifting gears, erratic shifting behavior, and the inability to select certain gears.

2. What are the potential causes of OBDII code P183E GMC?

Possible causes include a faulty internal mode switch, damaged wiring or connectors related to the internal mode switch, or internal transmission issues.

3. How serious is OBDII code P183E GMC?

This code should be addressed promptly as it can cause drivability issues and potentially lead to further transmission problems if left unresolved.

4. How can I diagnose OBDII code P183E GMC?

Diagnosis typically involves using a scan tool to read the code, checking the internal mode switch for proper operation, inspecting related wiring and connectors, and performing any necessary tests recommended by the manufacturer.

5. Can I continue driving with OBDII code P183E GMC active?

It is not recommended to continue driving with this code active, as it can affect the performance and safety of your vehicle.

6. How can I repair OBDII code P183E GMC?

Repair options may include replacing the internal mode switch, repairing damaged wiring or connectors, and addressing any underlying transmission issues.

7. Is it possible to clear OBDII code P183E GMC without fixing the underlying issue?

Clearing the code without fixing the underlying issue may temporarily remove the warning light, but the problem will likely resurface until properly addressed.

8. Can a DIY enthusiast fix OBDII code P183E GMC?

Depending on their skill level and access to tools, a DIY enthusiast may be able to diagnose and repair this code, but it is recommended to consult a professional for proper diagnosis and repair.

9. How much does it cost to repair OBDII code P183E GMC?

The cost of repair can vary depending on the underlying issue, parts needed, and labor costs. It is advisable to obtain quotes from reputable automotive repair shops.

10. How can I prevent OBDII code P183E GMC from occurring again?

Regular maintenance of your vehicle, including checking transmission components, ensuring proper wiring connections, and addressing any issues promptly, can help prevent the recurrence of this code.