AutoCodes – Cadillac – U0132 Cadillac

U0132 Cadillac Code - Lost Communication With Suspension Control Module

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Suspension Control Module, Suspension Control Module harness is open or shorted, Suspension Control Module 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: U0132 Cadillac indicates Lost Communication With Suspension Control Module.
Common causes: Common causes include Faulty Suspension Control Module, Suspension Control Module harness is open or shorted, Suspension Control Module 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 767

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 Apr 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0132 Cadillac Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Suspension Control Module has not been received.

OBDII Code U0132 Cadillac - Lost Communication With Suspension Control Module - AutoCodes.com — U0132 Cadillac Code - Lost Communication With Suspension Control Module

What does this mean?

What are the Possible Causes of the DTC U0132 Cadillac?

Faulty Suspension Control Module
Suspension Control Module harness is open or shorted
Suspension Control Module circuit poor electrical connection

How to Fix the DTC U0132 Cadillac?

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 U0132 Cadillac 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 U0132 Cadillac Code

1. What does the OBDII code U0132 mean on a Cadillac?

U0132 indicates a "Lost Communication With Suspension Control Module," meaning the vehicle's system cannot communicate with the suspension control module (SCM).

2. What are the common symptoms of code U0132 in a Cadillac?

Symptoms may include a suspension warning light on the dashboard, noticeable changes in ride quality, failure of adaptive suspension features, or a rougher ride.

3. What causes the U0132 code to appear on a Cadillac?

Common causes include a faulty suspension control module, damaged wiring or connectors in the communication network, or a failing CAN (Controller Area Network) system.

4. Can I drive my Cadillac with the U0132 code?

While the vehicle may still be drivable, ride comfort and handling could be compromised. Itâ€™s best to address the issue promptly to avoid further damage.

5. How do I diagnose the U0132 code on my Cadillac?

Start by checking the wiring and connectors leading to the suspension control module for damage or corrosion. Use a scan tool to verify communication with the module.

6. Does a faulty suspension control module always cause the U0132 code?

No, other issues like damaged wiring, poor electrical connections, or network communication errors can also trigger this code.

7. How much does it cost to fix code U0132 on a Cadillac?

Repair costs vary depending on the issue, ranging from $100 for wiring repairs to $800 or more if the suspension control module needs replacement.

8. Can a dead battery cause the U0132 code on a Cadillac?

Yes, a weak or dead battery can sometimes disrupt communication with the suspension control module and trigger the U0132 code.

9. How do I reset the U0132 code after repairs on my Cadillac?

Clear the code using an OBDII scan tool after ensuring all repairs are complete and the problem is resolved.

10. What should I do if the U0132 code keeps coming back?

If the code persists, recheck the wiring, connectors, and module. You may need a professional technician to inspect the CAN network for deeper issues.