U1170 GMC Code - Lost Communications With Driver Door Switch Assembly
Quick Answer
Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Driver Door Switch Assembly, Driver Door Switch Assembly harness is open or shorted, Driver Door 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
- U1170 GMC indicates Lost Communications With Driver Door Switch Assembly.
- Common causes
- Common causes include Faulty Driver Door Switch Assembly, Driver Door Switch Assembly harness is open or shorted, Driver Door 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.
Code U1170 GMC Description
What are the Possible Causes of the DTC U1170 GMC?
- Faulty Driver Door Switch Assembly
- Driver Door Switch Assembly harness is open or shorted
- Driver Door Switch Assembly circuit poor electrical connection
How to Fix the DTC U1170 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 U1170 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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Frequently Asked Questions about U1170 GMC Code
1. What does the OBDII code U1170 mean on a GMC vehicle?
The U1170 code indicates a loss of communication with the Driver Door Switch Assembly (DDSA), meaning the module is not receiving or sending signals properly on the communication network.
2. What are the common symptoms of the U1170 code in a GMC?
Symptoms may include inoperative power windows, mirrors, or door locks, no interior lighting response from the driver door, and potentially a malfunctioning driver door switch.
3. What causes the U1170 code to appear?
Common causes include a faulty Driver Door Switch Assembly, damaged or corroded wiring, loose electrical connectors, or issues with the communication bus.
4. Can a dead battery cause the U1170 code to trigger?
Yes, a weak or dead battery can disrupt communication between modules and potentially trigger the U1170 code.
5. How do you diagnose the U1170 code?
Diagnosis typically involves scanning for associated codes, inspecting the wiring and connectors to the DDSA, and using a scan tool to check the communication status on the vehicle's network.
6. Can the U1170 code be caused by a software issue?
Yes, outdated or corrupted software in the vehicle's control modules may lead to communication errors like the U1170 code.
7. How do you fix the U1170 code on a GMC?
Repairs may include replacing the Driver Door Switch Assembly, repairing damaged wiring or connectors, updating module software, or resetting the communication network.
8. Is it safe to drive with the U1170 code active?
While it may be safe to drive, the affected features like power windows or locks may not work, and the issue should be addressed to avoid further communication problems.
9. How much does it cost to repair the U1170 code on a GMC?
Repair costs can vary depending on the exact issue but typically range from $100 to $500, depending on whether the DDSA or wiring needs replacement.
10. Can clearing the code fix the U1170 issue permanently?
Clearing the code may temporarily remove it, but the underlying problem must be fixed to prevent the code from returning.
Discuss the causes and fixes for U1170 GMC OBDII Code
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