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P2004 on Chevrolet Traverse

Intake Manifold Runner Control (IMRC) Stuck Open (Bank 1)

Factory diagnostic protocol and troubleshooting wire for fault code P2004 specifically for the Chevrolet Traverse (2020–2026, 2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD)).

Verified OEM Telemetry & Field Repair Tree
Chevrolet Traverse2020–2026
Chevrolet Traverse
SUV2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Traverse SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Drivable (Short Trip)
Medium urgency level
Est. Repair Cost
$150 - $600 (DIY: $40 - $180)
Parts & Labor DIY
Check P2004 On Another Chevrolet Model:
Diagnose P2004 on Specific Traverse Model Year:

1. Symptoms of P2004 on Chevrolet Traverse

When the Engine Control Module (ECM/PCM) on your Chevrolet Traverse (2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD)) logs fault code P2004, drivers commonly observe:

Check Engine Light on on Chevrolet Traverse (2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD))
Sluggish low-RPM acceleration and low-end torque loss on Chevrolet Traverse (2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD))
Engine runs fine at high highway RPMs (3,500+ RPM) on Chevrolet Traverse (2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD))
Slightly rough idle or minor intake whistling noise on Chevrolet Traverse (2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD))
Chevrolet Traverse OBD-II Port Location
The 16-pin diagnostic connector is located Driver lower kick panel to the right of brake pedal. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Chevrolet Traverse

Historical warranty claims and technical repair bulletins for Chevrolet Traverse point to the following failure distribution:

55%
Carbon buildup binding the intake manifold swirl flap runner plates (Chevrolet OEM Part)
25%
Broken plastic IMRC actuator linkage rod or vacuum diaphragm (Chevrolet OEM Part)
12%
Faulty electronic IMRC runner control motor / solenoid (Chevrolet OEM Part)
8%
Cracked vacuum line to IMRC actuator (Chevrolet OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Chevrolet Traverse.

3. Step-by-Step DIY Repair Guide for Chevrolet Traverse

01
Visually Inspect IMRC Actuator Linkage

Check the mechanical plastic linkage arms at the end of the intake manifold. Verify arms are not popped off or broken. on the Chevrolet Traverse equipped with 2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD).

Required Tool: Flashlight, Mirror
02
Test Runner Flap Movement Manually

Move the runner lever by hand. It should spring back smoothly without binding or gritty resistance. on the Chevrolet Traverse equipped with 2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD).

Required Tool: None
03
Test IMRC Solenoid / Actuator Motor

Command IMRC open and closed with bi-directional scan tool or check vacuum supply to diaphragm. on the Chevrolet Traverse equipped with 2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD).

Required Tool: OBD-II Bi-Directional Scanner or Vacuum Gauge
04
Clean Intake Manifold Carbon or Replace Actuator

Replace the broken linkage/actuator motor or remove manifold to clean heavy carbon deposits around the butterfly flaps. on the Chevrolet Traverse equipped with 2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD).

Required Tool: Socket Set, Carburetor Cleaner, Gasket Set
05
Clear DTCs and Verify Runner Operation

Clear trouble codes and confirm low-end acceleration is restored. on the Chevrolet Traverse equipped with 2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD).

Required Tool: OBD-II Scanner
Recommended Parts & Testing Tools

Equipment for Diagnosing Chevrolet Traverse (P2004)

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Direct-Fit Replacement Part

Chevrolet Traverse OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Chevrolet Traverse.

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Sensor Signal Voltage Meter

AstroAI Auto-Ranging Digital Multimeter

4.6 / 5.0 (Best Seller)

Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.

$29.99 Prime
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Top Mobile OBD-II Scanner

BlueDriver Bluetooth Pro OBDII Scan Tool

4.7 / 5.0 (50,000+ Reviews)

Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.

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Other Common Fault Codes on Chevrolet Traverse

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Chevrolet Traverse:

4. Chevrolet Traverse P2004 FAQs

What causes code P2004 to trigger on a Chevrolet Traverse?

On the Chevrolet Traverse (2.5L Turbo 4-Cyl (328HP) / 3.6L V6 (310HP AWD)), P2004 is most frequently caused by Carbon buildup binding the intake manifold swirl flap runner plates or Broken plastic IMRC actuator linkage rod or vacuum diaphragm.

Where is the OBD-II port located on my Chevrolet Traverse?

On the Chevrolet Traverse, the 16-pin DLC diagnostic connector is located Driver lower kick panel to the right of brake pedal. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Chevrolet Traverse with code P2004?

Yes. Low-end engine torque will feel sluggish, but vehicle is drivable. Given that P2004 carries a Medium severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.