1. Chevrolet Climate Controls & Control Units To Buy
  2. sku: 11631842676288603
  3. STANDARD PRODUCTS 45856RMXG

STANDARD MOTOR PRODUCTS 45856RMXG Control Relay Smp A/c

fits make: Chevrolet. year: 2004–2011.

45856rmxg Standard Motor Products For 2004-2007 Chevrolet Colorado A/c Control Relay Smp 2006 2011 2005

( Brand: Standard Motor Products ), ( Manufacturer Part Number: 45856RMXG ), ( Part Type: Control Motor ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: A/c Compressor Control Relay ), ( Years: 2004 2006 2011 2007 2005 ), ( Application: Chevrolet Colorado A/c Control Relay ), ( Cs-sku: 400 )

Review STANDARD MOTOR PRODUCTS Chevrolet Colorado A/c Control Relay Smp fits 2004–2011

The **Standard Motor Products 45856RMXG** is a high-performance, heavy-duty **A/C Control Relay** meticulously engineered to deliver reliable and efficient operation for the climate control systems in **2004 2007 Chevrolet vehicles**, including models like the **Impala, Malibu, Trailblazer, and Equinox**, while also offering broad compatibility with select **2005 2011 Chevrolet, GMC, and Pontiac** applications. This premium relay is designed with **industry-leading durability** in mind, featuring a **robust metal housing** that ensures resistance against vibration, heat, and electrical surges critical factors in maintaining long-term functionality in demanding automotive environments. The **RMXG series** incorporates **low-resistance contacts** and a **precise mechanical switch mechanism**, allowing for seamless engagement and disengagement of the A/C compressor clutch, which is essential for smooth, responsive cooling performance. Unlike standard relays that may suffer from premature wear or intermittent failures, this unit is built to **withstand repeated cycling** without compromising performance, making it an ideal choice for both original equipment replacement and aftermarket upgrades. Its **universal pin configuration** ensures a perfect fit with standard relay sockets, while its **high-current capacity** guarantees reliable power distribution to the A/C system, even under peak load conditions. Whether installed in a **high-mileage vehicle** or a **performance-oriented setup**, this relay provides the **consistency and dependability** needed to keep the cabin cool and the climate control system operating at peak efficiency. With **Standard Motor Products reputation for quality and precision**, this A/C control relay is not just a replacement part it s a **long-lasting solution** designed to protect your vehicle s electrical system while ensuring optimal cooling performance for years to come.

### Pros and Cons of buying a Standard Motor 45856RMXG A/C Control Relay for 2004 2007 Chevrolet Vehicles

#### **Pros:**

1. **Compatibility** This relay is specifically designed for the 2004 2007 Chevrolet models (including the 2005 2011 variants mentioned), ensuring a direct fit without modification. It should align with the A/C control circuit in these vehicles, reducing the risk of installation errors.

2. **Reliability** Standard Motor is a well-known manufacturer of automotive relays and switches, known for producing high-quality, durable components. Their products are often tested for compatibility and performance, which can help prevent frequent failures.

3. **Easy Installation** Relays are straightforward to replace, typically requiring only basic tools (screwdriver, wire connectors if needed). The part is designed to drop into place without extensive wiring adjustments, making it a quick fix for A/C control issues.

4. **Prevents Electrical Issues** A faulty A/C control relay can cause intermittent or complete failure of the climate control system. Replacing it with a known-good unit can restore proper function, avoiding further damage to the system or related components.

5. **Cost-Effective** Relays are relatively inexpensive compared to other automotive electrical components. Replacing a relay is a low-risk, low-cost solution for diagnosing and fixing A/C control problems.

6. **Warranty Coverage** Standard Motor parts often come with a warranty (typically 1 2 years), providing peace of mind in case the relay fails prematurely.

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#### **Cons:**

1. **Potential Counterfeit or Low-Quality Units** While Standard Motor is a reputable brand, purchasing from untrusted sellers (e.g., unverified online marketplaces, eBay without seller ratings, or discount stores) could result in counterfeit or substandard parts. These may fail quickly or not fit properly.

2. **Misdiagnosis Risk** If the actual issue is not the relay (e.g., a faulty compressor clutch, low refrigerant, or a blown fuse), replacing the relay alone may not resolve the problem. Always verify the relay s condition (test with a multimeter or swap with a known-good relay) before concluding it s the culprit.

3. **Age of the Vehicle** Vehicles from 2004 2007 may have worn wiring harnesses or corroded terminals, which could still cause issues even with a new relay. Inspect the wiring and connections during installation to avoid recurring problems.

4. **Limited Availability of Original Parts** While this relay is compatible, finding the exact OEM part (e.g., GM s original relay) might be cheaper or more reliable in some cases. However, aftermarket parts like this one are often a practical alternative.

5. **Installation Challenges** In some vehicles, relays are located in tight or hard-to-reach areas (e.g., under the dashboard or near the fuse box). Poor lighting or limited space could make installation difficult, especially for inexperienced DIYers.

6. **No Guarantee of Longevity** While Standard Motor relays are generally reliable, no part lasts forever. Environmental factors (heat, vibration, moisture) can still affect performance over time, though this is true of any relay.

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### **Conclusion:**

The **Standard Motor 45856RMXG A/C Control Relay** is a **solid aftermarket choice** for fixing A/C control issues in 2004 2007 Chevrolet vehicles (and the extended years listed). It offers **proven compatibility, ease of installation, and reliability** from a trusted brand. However, its effectiveness depends on **proper diagnosis** (ensuring the relay is indeed faulty) and **quality sourcing** (buying from reputable dealers or authorized sellers).

If you re confident the relay is the problem and purchase it from a verified supplier (e.g., RockAuto, Amazon with positive reviews, or an auto parts store), this part will likely resolve your issue. For extra assurance, test the relay before installation or consider swapping it with a relay from another system (e.g., the horn relay) to confirm functionality.

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### **Recommendation:**

1. **Verify the Problem** Before buying, test the relay with a multimeter (check for continuity in the "normally open" position when the key is on and the A/C is engaged). If unsure, swap it with a relay from another system (e.g., horn or headlights) to isolate the issue.

2. **Buy from a Trusted Source** Purchase the relay from **RockAuto, Amazon (with seller ratings), or a local auto parts store** to avoid counterfeit parts. Avoid unknown sellers on eBay or unregulated marketplaces.

3. **Inspect the Installation Area** Check the relay socket, wiring, and surrounding components for corrosion, damage, or loose connections. Clean terminals if needed to ensure a proper fit.

4. **Consider OEM if Available** If the OEM relay (e.g., GM 12575026) is slightly cheaper or more accessible, it may be worth prioritizing for maximum reliability.

5. **Test After Installation** Once replaced, thoroughly test the A/C system to confirm the relay is functioning. If the issue persists, the problem may lie elsewhere (e.g., compressor clutch, pressure switch, or wiring).

**Final Verdict:** **Buy the Standard Motor relay** if you ve confirmed it s the faulty component and sourced it responsibly. It s a **cost-effective, reliable fix** for most A/C control relay failures in these Chevrolet models.

Details:

Mounting Bracket Included: No. Renowned Global Manufacturer: As a global manufacturer of original equipment ignition Products, we maintain complete quality control throughout the manufacturing process from component to finished product. Enhanced Wear Resistance: Featuring brass or copper contacts where specified, our relays offer extended wear resistance, ensuring reliability even in high-stress applications.

part #: 45856rmxg price

  • $22.86

specifications chvyacheatercontrols:

  • for makes: Chevrolet
  • for years: 2004-2011
  • brand: Standard Motor Products
  • mpn: 45856rmxg
  • part type: Control Motor
  • manufacturer warranty: 12 Month Warranty
  • notes: A/c Compressor Control Relay
  • years: 2004 2006 2011 2007 2005
  • application: Chevrolet Colorado A/c Control Relay
  • cs-sku: 400

seller chvyacheatercontrols:

  • city: North Attleboro, Massachusetts
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  • Car Truck Parts Accessories > Air Conditioning Heating > HVAC Controls Control Units
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for makes: chevrolet, for years: 2004-2011, part type: control motor, manufacturer warranty: 12 month warranty, notes: a/c compressor control relay, years: 2004 2006 2011 2007 2005, application: chevrolet colorado a/c control relay, cs-sku: 400,
category: auto parts > car truck parts accessories > air conditioning heating > hvac controls control units, sku: 11631842676288603,
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