C0750 on 2007-2014 GMC Sierra 1500: TPMS Faults, Fixes, and No-Start Link

What's Unique About the 2007-2014 Gmc SIERRA 1500

On most vehicles, a TPMS code is a simple nuisance that only affects the tire pressure warning light. However, on this generation of GMC Sierra and its platform mates, the TPMS system is integrated with the remote and security functions via the Remote Control Door Lock Receiver (RCDLR). A fault in this system, flagged by codes like C0750, can be a symptom of a failing RCDLR module, a disconnected RCDLR antenna, or radio frequency interference, which can lead to severe and confusing symptoms like the key fob not working, a 'No Remote Detected' message, or even a no-crank, no-start condition with the security light on. This is well-documented in GM Technical Service Bulletins like PIC5650M, 16-NA-396, and 16-NA-061.

Diagnostic Flowchart

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

Generation note: This range covers two Sierra generations: the GMT900 (2007-2013) and the first model year of the K2XX (2014). The core cause is the same, but the TPMS relearn procedure varies slightly. For example, 2007 models use the headlight switch to enter learn mode, while 2008-2013 models use the key fob buttons. The RCDLR module and its related issues are common across the entire GMT900 truck and SUV platform.

Symptoms You May Notice

• "Service Tire Monitor System" message on the Driver Information Center (DIC)
• TPMS warning light is illuminated
• Tire pressure reading for the left front tire shows dashes ('--') or is incorrect
• Intermittently, the key fob may not work for lock/unlock or remote start
• "No Remote Detected" message on the DIC
• In rare cases, a no-crank or no-start condition with the security light on
🎬 See this guide on fixing 'No Fob Detected' start issues.
• Poor remote transmitter range

Most Likely Causes

1. Dead or failing TPMS sensor battery 🔴 High Probability → Shop Tire Pressure Monitoring System (TPMS) Sensor TPMS sensor batteries have a finite lifespan, typically 5-10 years. For vehicles in this 2007-2014 year range, battery failure is very common. It's often recommended to replace all four sensors if they are original, as the others will likely fail soon.
   How to confirm: Use a TPMS diagnostic tool (like an Autel TS508 or similar) to read the sensor's battery status directly. If the tool cannot get a reading from the sensor, or shows a low battery status, it has likely failed.
   Typical fix: Replace the left front TPMS sensor and perform the TPMS relearn procedure. The tire must be unmounted from the wheel to access the sensor. Any tire shop can perform this service.
   Est. part cost: $30-$80
2. Faulty Remote Control Door Lock Receiver (RCDLR) 🟡 Medium Probability → Shop Keyless Entry Receiver As documented in GM TSBs PIC5650M and 16-NA-396, the RCDLR module on these and other GM platforms can fail internally, causing a loss of communication with TPMS sensors and key fobs. The failure can be an internal transistor.
   How to confirm: This is difficult to confirm without a professional scan tool. Diagnosis involves checking for multiple TPMS codes (C0750, C0755, C0760, C0765) and key fob/security-related DTCs (like B3055). If replacing the sensor doesn't fix the code, and key fob issues are also present, the RCDLR is the next suspect. A diagnostic test involves checking for power and ground at the RCDLR connector; if power is missing, a broken wire between the fuse panel and module is possible. 🎬 Watch: How to diagnose RCDLR communication and power issues.
   Typical fix: Replace the RCDLR module. This requires programming the new module to the vehicle with GM-specific software (SPS) via a tool like GDS2. The module is typically located on the rear wall of the cab, behind the trim.
   Est. part cost: $70-$150

Rare But Worth Checking

• Radio Frequency Interference (RFI): TSB PIC5650 strongly advises checking for RFI from aftermarket devices before replacing any parts. Common culprits include aftermarket LED lights, cell phone chargers, dash cams, and even toll passes. These devices can 'jam' the 315 MHz frequency used by the TPMS and key fobs, causing intermittent codes and no-start conditions. The fix is to remove the offending device or add ferrite chokes to the device's power wiring.
• Disconnected RCDLR Antenna Coax Cable: TSB 16-NA-061 highlights that the antenna system for the RCDLR can become disconnected at one of three points: at the RCDLR module itself, at the antenna amplifier module, or where the amplifier connects to the antenna in the right rear glass. A disconnected cable can cause all TPMS sensors to stop reporting and poor key fob range. Reconnecting the cable often resolves the issue.
• Aftermarket Wheel Issues: Some aftermarket wheels may have a valve stem location that interferes with the TPMS sensor's ability to transmit its signal properly.
• Use of Unapproved Tire Sealant: Tire sealants (like Fix-a-Flat) can clog the pressure port on the TPMS sensor, causing it to fail or read incorrectly.

Diagnosis Steps

1. Check for and temporarily remove any aftermarket electronic devices (phone chargers, LED lights, dash cams, etc.) to rule out Radio Frequency Interference (RFI) as per TSB PIC5650.
2. Use a TPMS diagnostic tool to attempt to read all four sensors. Note the ID, pressure, temperature, and battery status for each.
3. If the left front sensor does not respond or shows a low battery, it is the most likely culprit.
4. If multiple sensors are not responding, especially if key fob issues are also present, inspect the RCDLR antenna connections. Per TSB 16-NA-061, check the coax cable connection at the RCDLR module (often in the rear of the cab), at the antenna amplifier, and at the rear glass antenna.
5. Attempt a TPMS relearn procedure. A TPMS activation tool makes it much faster.
🎬 Watch: A quick walkthrough of the TPMS reset procedure.
6. If the relearn fails for the left front sensor after confirming good connections and no RFI, replace the sensor.
7. If the sensor has been replaced and the code persists, or if multiple TPMS and security codes are present from the start, the RCDLR module should be professionally diagnosed. This includes checking for power (Red/White wire) and ground at the module's connector. If power and ground are present, the RCDLR likely needs replacement and programming.

Parts You'll Likely Need

• Tire Pressure Monitoring System (TPMS) Sensor (OEM #13598771 (Verify by VIN)) — This is the most common failure point. The internal battery dies, causing the sensor to stop transmitting.
  Trusted brands: ACDelco, Schrader, Continental
  OEM price range: $50-$90
  Aftermarket price range: $30-$60
• Remote Control Door Lock Receiver (RCDLR) (OEM #20803735 (supersedes many, verify by VIN)) — This module can fail internally, causing this code along with other TPMS codes and key fob issues, as noted in TSBs. Part number is specific to year and options, other possible numbers include 22868129 or 23445312. Always confirm with a dealer using your VIN.
  Trusted brands: ACDelco
  OEM price range: $70-$150
  Aftermarket price range: $50-$100

Related Codes That Often Appear With This One

• C0755, C0760, C0765 — These are the codes for the other three tire pressure sensors (RF, RR, LR). When they appear with C0750, it points more strongly towards a central issue like a faulty RCDLR module, its antenna, or RFI, rather than four simultaneously failed sensors.
• B3055, B3060, B3935 — These are security and key-related codes. Their presence alongside C0750 is a strong indicator of the RCDLR module fault or RFI as described in TSB PIC5650M.

Technical Service Bulletins (TSBs) & Recalls

• PIC5650M: Notes that DTCs including C0750 can be found with intermittent no-crank/no-start concerns and attributes the cause to Radio Frequency Interference (RFI) from aftermarket devices.
• 16-NA-396: Links intermittent key fob operation, 'No Remote Detected' messages, and TPMS codes C0750, C0755, C0760, and C0765 to an internal failure of the Remote Control Door Lock Receiver (RCDLR).
• 16-NA-061: Details how a poor or disconnected RCDLR antenna connection can cause TPMS codes and key fob range issues, advising to check connections.

Platform-Specific Known Issues

• TSB PIC5650M (and its subsequent revisions) documents that this code, along with others, can be related to an intermittent no-crank, no-start, or stall condition caused by Radio Frequency Interference from aftermarket accessories.
• TSB 16-NA-396 describes how an internal RCDLR failure can cause intermittent loss of key fob functions and set multiple TPMS codes, including C0750. The fix is to replace and program the RCDLR module.
• TSB 16-NA-061 provides a detailed diagnostic for a disconnected RCDLR antenna coax cable, which can present the exact same symptoms as a failed module.

Hidden / Shadow Codes Worth Checking

• C0750 03: Left Front Tire Pressure Sensor Low Voltage. (see via GM GDS2 or other professional scan tool that can read manufacturer-specific symptom bytes.)
• C0750 29: Left Front Tire Pressure Sensor Too Few Pulses. (see via GM GDS2 or other professional scan tool that can read manufacturer-specific symptom bytes.)
• C0750 39: Left Front Tire Pressure Sensor Internal Malfunction. (see via GM GDS2 or other professional scan tool that can read manufacturer-specific symptom bytes.)

Scan Tool Commands That Help

• GDS2 (GM Global Diagnostic System 2): Module Diagnostics > Remote Control Door Lock Receiver > Configuration/Reset Functions > Add/Replace Key Fobs — This function is required to program new key fobs after replacing the RCDLR module.
• GDS2 (GM Global Diagnostic System 2): Module Diagnostics > Body Control Module > Data Display > Tire Pressure Sensor Data — To view live data from each TPMS sensor, including sensor ID, pressure, temperature, and crucially, the 'Transmitter Battery Status'. This can confirm a dead sensor battery without using a separate TPMS tool.
• GDS2 (GM Global Diagnostic System 2): Remote Control Door Lock Receiver Module Setup — This is a mandatory service function to be performed after a new RCDLR is installed to configure it to the vehicle's options and VIN.

Wiring & Ground Locations

• RCDLR Module — On the rear wall of the cab, typically behind the driver's side C-pillar trim panel. Access requires removing the rear seat side bolster and the pillar trim.. This is the central receiver for all TPMS and key fob signals. Physical access is needed to check its connections (power, ground, and antenna) or to replace it.
• RCDLR Power/Ground Connector — The main electrical connector on the RCDLR module.. Technicians must back-probe this connector to verify battery voltage (typically on a Red/White wire) and ground before condemning the module. A broken power wire between the fuse block and this connector can mimic a failed RCDLR.
• G402 / G403 — These are common ground points located at the rear of the cab or near the C/D pillars.. The RCDLR relies on a solid chassis ground. While a bad ground is less common than module failure, corrosion or looseness at these points can cause intermittent communication issues for the RCDLR.
• RCDLR Antenna — The antenna itself is integrated into the right rear glass, connected via a coax cable and an amplifier module to the RCDLR.. As per TSB 16-NA-061, the coax cable can become disconnected at the RCDLR, the amplifier, or the glass, causing loss of signal from the TPMS sensors.

Real Owner Repair Stories

• YouTube channel 'HR Repair' (2011 Chevrolet Silverado) — Key fobs did not work, no communication with the RCDLR module on a scan tool.
  ❌ Tried (didn't work) Initially assumed the RCDLR module itself was bad.
  ✅ What actually fixed it After gaining access to the RCDLR, a test light confirmed good ground but no power on the Red/White wire. The fuse was good. The technician found and repaired a broken section of the power wire in the wiring harness running along the door sill, which restored communication and function without needing to replace the module.
• YouTube channel 'Wires 2 Wrenches' (2008 Chevrolet Silverado Crew Cab) — Intermittent no-start, 'Service TPMS' message, key fob not working, erratic DIC behavior.
  ❌ Tried (didn't work) Checking wiring harnesses in the door sills.
  ✅ What actually fixed it The final fix was replacing an aftermarket LED third brake light. The cheap LED assembly was creating significant radio frequency interference (RFI) that was disrupting the RCDLR module, causing all the electronic issues. Replacing it with a quality unit resolved the codes and starting problems.

OEM Part Supersession History

• 22868129, 20803735 → 23445312 (for many applications) — Internal design revisions by GM to improve reliability.
  Heads up: Always verify the correct part number with a dealer using the vehicle's VIN. While a superseded part may physically plug in, it may not program correctly if it's not the specified replacement for that VIN and its options.

Model Year Variations Within This Range

• 2007-2014: The physical location of the RCDLR module can vary slightly depending on cab configuration (Regular, Extended, Crew Cab). While generally on the rear cab wall, it may be more towards the center on some and on the driver's side C-pillar on others.