C0760 on 2007-2014 Chevrolet Suburban: Left Rear TPMS Fault Explained

What's Unique About the 2007-2014 Chevrolet SUBURBAN

On the GMT900 platform, which includes the 2007-2014 Suburban and Tahoe, the TPMS sensors communicate with the Remote Control Door Lock Receiver (RCDLR). This is the same module that receives signals from your key fobs. Because of this shared module, it's a known issue for a failing RCDLR to cause both TPMS codes (like C0760) and key fob problems simultaneously. Owners often first notice poor key fob range or intermittent function, followed by a TPMS warning light.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Symptoms You May Notice

• "Service Tire Monitor System" message on the dashboard.
• TPMS warning light is illuminated or flashing. A flashing light for the first 60 seconds of startup that then stays solid specifically indicates a system malfunction, whereas a solid light indicates low pressure.
• The pressure reading for the left rear tire shows dashes (---) on the driver information center.
• In some cases, key fobs may have reduced range or stop working entirely.
• "No Fob Detected" message may appear on the DIC.

Most Likely Causes

1. Dead TPMS Sensor Battery 🔴 High Probability → Shop Tire Pressure Monitoring System (TPMS) Sensor TPMS sensor batteries are not rechargeable and have a finite lifespan, typically 5-10 years. Vehicles in this 2007-2014 range are now old enough that original sensor batteries are failing due to age.
   How to confirm: Use a TPMS diagnostic tool to attempt to 'wake up' or read the sensor. If the tool cannot get a response from the left rear sensor but can from the others, the sensor has failed. Many tools can also display the sensor's internal battery status.
   Typical fix: Replace the left rear TPMS sensor. This requires breaking the tire bead to access 🎬 Watch: How to replace a TPMS sensor yourself without a tire machine the sensor inside the wheel. The new sensor must then be programmed to the vehicle using a TPMS relearn procedure, which can be initiated via the DIC and completed with a simple TPMS tool.
   Est. part cost: $35-$70
2. Faulty Remote Control Door Lock Receiver (RCDLR) 🟡 Medium Probability → Shop Keyless Entry Receiver The RCDLR module on this platform is known to have software glitches or internal failures that cause it to stop receiving signals from TPMS sensors and key fobs. TSB 16-NA-061 also points to antenna connection issues at the RCDLR as a cause.
   How to confirm: If you have TPMS codes for multiple wheels and your key fobs are also not working, the RCDLR is the primary suspect. A temporary fix can sometimes be achieved by pulling the 'DSM' fuse in the interior fuse panel or disconnecting the vehicle battery for 15-30 minutes to reset the module. A professional scan tool can also check for communication with the RCDLR. 🎬 See how to diagnose a module misdiagnosis and communication issues
   Typical fix: If a reset doesn't work, the RCDLR module needs to be replaced and programmed by a dealer or a shop with GM diagnostic software (Tech 2 or equivalent). The module is located behind the driver's side D-pillar trim in the rear cargo area.
   Est. part cost: $80-$150
3. Damaged TPMS Sensor ⚪ Low Probability → Shop Tire Pressure Monitoring System (TPMS) Sensor Sensors can be physically damaged during tire changes if the technician is not careful. They are made of plastic and can be broken by a tire machine's bead breaker.
   How to confirm: This is usually discovered immediately after a new tire has been installed. A visual inspection during a tire dismount will confirm physical damage.
   Typical fix: Replace the broken TPMS sensor and perform the relearn procedure.
   Est. part cost: $35-$70

Rare But Worth Checking

• RCDLR Antenna Connection Issue: According to GM TSB 16-NA-061, a disconnected or poor connection at the RCDLR antenna or antenna amplifier can cause intermittent loss of signal. There are three common failure points: the coax cable at the RCDLR module itself, the coax at the antenna amplifier, or the amplifier's connection to the antenna in the right rear glass. A disconnect closer to the module will cause more severe symptoms (all sensors and fobs failing).
• Radio Frequency (RF) Interference: Aftermarket electronic devices, such as cell phone chargers, dash cams, USB power banks, and even aftermarket LED lighting can emit RF interference that disrupts the 315 MHz signal between the TPMS sensors and the RCDLR. TSB PIC5650K mentions this as a possibility when TPMS codes appear alongside security or no-start issues. Before replacing parts, unplug all aftermarket devices to see if the issue resolves.
• Broken Power Wire to RCDLR: In some cases, the power wire leading to the RCDLR module can break, often within the flexible wiring harness in the driver's side door jamb. One owner on TahoeYukonForum reported replacing the RCDLR with no success, only to find a broken power wire was the true cause. A mechanic ran a new power wire to the module to fix it.

Diagnosis Steps

1. Verify tire pressure manually with a quality gauge to rule out an actual low-pressure situation.
2. Check for other symptoms. Are the key fobs working correctly? If not, suspect the RCDLR module.
3. Unplug all aftermarket 12V accessories (chargers, dash cams, etc.) to eliminate Radio Frequency Interference as per TSB PIC5650K.
4. Use a TPMS diagnostic tool to try and activate the left rear sensor. If it fails to respond, the sensor itself (likely its battery) has failed.
5. If the sensor responds to the tool but the code remains, attempt the vehicle's TPMS relearn procedure. This is initiated through the Driver Information Center (DIC) and requires a simple activation tool.
🎬 Watch: How to use an inexpensive tool for the relearn procedure
6. If multiple or all sensors fail to respond or relearn, inspect the RCDLR and its related fuses ('DSM' in the interior fuse panel). As a reset, try disconnecting the vehicle's battery for 30 minutes.
7. If a reset fails, inspect the RCDLR antenna connections. The module is in the driver's side D-pillar, but the antenna and amplifier are in the right rear D-pillar/quarter glass area. Check all three connection points per TSB 16-NA-061.
8. Check for 12V power at the RCDLR connector to rule out a broken wire, a known issue.
9. If all else fails, the RCDLR module likely requires replacement and programming by a facility with GM software.

Parts You'll Likely Need

• Tire Pressure Monitoring System (TPMS) Sensor (OEM #13598771 (superseded by 13540602, 13540603)) — This is the most common failure point. The internal battery dies, requiring replacement of the entire sensor unit. Note that GM has several superseding part numbers.
  Trusted brands: ACDelco (GM OE), Schrader, Continental, Dorman
  OEM price range: $40-$70
  Aftermarket price range: $30-$50
• Remote Control Door Lock Receiver (RCDLR) (OEM #20803737) — This module is the second most likely cause, especially if key fob issues are also present. It receives signals from both the TPMS sensors and key fobs. Replacement requires programming.
  Trusted brands: ACDelco (GM OE)
  OEM price range: $90-$160
  Aftermarket price range: $70-$120

Related Codes That Often Appear With This One

• C0750, C0755, C0765 — These are the codes for the other three wheels (Left Front, Right Front, Right Rear). If multiple sensors were installed at the same time, their batteries may fail around the same time. If all appear at once, it strongly points to a faulty RCDLR module or its antenna connection.
• B3055, B3060 — As noted in TSB PIC5650K, these security-related codes can appear with TPMS codes during no-start or start-stall conditions, often pointing to a broader electrical or RF interference issue rather than just a bad sensor.

Technical Service Bulletins (TSBs) & Recalls

• PIC5650K: The latest version of this bulletin lists C0760 as a code that can appear during no-start or security light issues. It strongly points to RF interference from aftermarket devices like phone chargers, USB power banks, and LED lights as a potential cause that should be ruled out first.
• 16-NA-061: Details how a disconnected antenna for the RCDLR can cause TPMS codes and poor key fob range. It provides specific diagnostic steps, showing the three main points of failure for the antenna system: the connection at the RC

Platform-Specific Known Issues

• A known software issue on early GMT900 models (especially 2007) could cause the RCDLR to 'go to sleep' and not wake up, disabling TPMS and keyless entry. A temporary fix is to pull the 'DSM' fuse in the interior fuse panel. The permanent fix was a dealer-installed software update released after September 18, 2006.
• The RCDLR module is located behind the trim panel on the driver's side D-pillar (the rearmost pillar). Access requires removing the upper rear door trim and then the pillar trim itself.

Mechanic-Grade Diagnostic Values

• RCDLR Module Voltage Drop — expected: Less than 0.5V drop between the battery positive terminal and the RCDLR power input pin.. Failure: A voltage drop greater than 0.5V indicates high resistance in the power feed circuit (corroded wires, bad fuse connection, etc.). A scan tool may show RCDLR voltage significantly lower than battery voltage (e.g., 11.9V at RCDLR vs 12.6V at battery).
• RCDLR Power and Ground (Load Test) — expected: A test light (like a 3057 bulb) connected between the RCDLR power pin and ground pin should illuminate brightly.. Failure: A dim or non-illuminated bulb indicates a poor power or ground connection that cannot handle the module's operational load, even if a multimeter shows 12V with no load.

Scan Tool Commands That Help

• GM Tech 2: Setup New RCDLR — This function is required after replacing the RCDLR module. It pairs the new module to the vehicle's BCM and theft deterrent system. The path is: Body and Accessories > Theft Deterrent > Module Setup > RCDLR.
• GM Tech 2: TPM Learn Mode — To initiate the TPMS relearn procedure after replacing a sensor or rotating tires. This command puts the RCDLR into a state where it's ready to receive and store the new sensor IDs. This can also be initiated via the DIC.
• GM Tech 2 / GDS2: RCDLR Data Display — To check the live voltage being received by the RCDLR module. This is crucial for diagnosing power supply issues, as the module's reported voltage can be compared to the actual battery voltage to identify a voltage drop.

Wiring & Ground Locations

• RCDLR Power/Ground Connector — At the RCDLR module, located behind the driver's side D-pillar trim in the rear cargo area.. The Red/White wire is the battery positive voltage feed, and the Black/White wire is the ground. Verifying 12V power and a solid ground at these pins is the first step in diagnosing a non-communicating RCDLR.
• DSM Fuse — In the instrument panel fuse block on the driver's side of the dashboard.. This 10A fuse provides power to the RCDLR. Pulling this fuse for a few minutes can reset a 'sleeping' RCDLR on early models, temporarily restoring function.
• G303/G304 (Varies by exact model/year) — Typically located in the rear of the vehicle, on the body or frame near the D-pillar area.. These are the primary body ground points for components in the rear of the vehicle, including the RCDLR. Corrosion or looseness at these grounds can cause intermittent module operation and communication faults.
• RCDLR Antenna Coax — Runs from the RCDLR module (driver D-pillar) to the antenna amplifier (passenger D-pillar) and then to the antenna in the right rear quarter glass.. A disconnected coax cable at either the module or the amplifier is a known cause of TPMS codes and poor key fob range, as outlined in TSB 16-NA-061.

Real Owner Repair Stories

• YouTube channel 'Raymond Beachy' (2011 Chevrolet Silverado (GMT900 platform)) — Key fobs not working, no communication with the RCDLR module on a scan tool.
  ❌ Tried (didn't work) Initially misdiagnosed as a failed RCDLR module and a new one was ordered.
  ✅ What actually fixed it Upon testing, there was no power at the RCDLR connector's red/white wire. The DSM fuse was good. The technician ran a new fused power wire directly to the RCDLR module, which restored communication and fixed the problem, proving the original power wire was broken somewhere in the harness.
• Tahoe Yukon Forum (2007 Chevrolet Tahoe (GMT900 platform)) — Both key fobs and the TPMS system stopped working simultaneously.
  ❌ Tried (didn't work) Replacing key fob batteries.
  ✅ What actually fixed it The owner found a TSB describing the RCDLR module going into a 'sleep' state. Pulling the 'DSM' fuse from the interior fuse panel for a few seconds and reinstalling it reset the module and immediately restored full function to both the key fobs and the TPMS.

OEM Part Supersession History

• 13586335, 15922396, 20923680, 22853741, 25920615 → 13598771 (itself later superseded by other numbers like 13540600) — Standard part consolidation and minor design revisions by the manufacturer (ACDelco/GM).
  Heads up: All listed 315 MHz sensors are generally cross-compatible for this vehicle range, but it is always best practice to replace with the latest superseded part number.

Model Year Variations Within This Range

• 2007 (early models): Early production 2007 models were susceptible to a software glitch where the RCDLR would not 'wake up' after the vehicle was shut off, causing both TPMS and key fob failure. GM released a software update (after Sept 2006) to fix this permanently. For vehicles without the update, pulling the 'DSM' fuse is a temporary reset.
• 2012-2013: A specific batch of RCDLR modules installed in vehicles built between April 2012 and May 2013 were known to be faulty, causing poor RKE range and TPMS issues. GM Preliminary Information bulletin PI1085 advised dealers to replace the RCDLR (P/N 20863945 at the time) if these symptoms were present.
• 2011 and newer (approx.): While earlier models (approx. 2007-2010) often allow for a TPMS relearn procedure by letting air out of the tires, many 2011 and newer GM vehicles require a dedicated TPMS tool to complete the relearn process. The air-out method may not work.