1. Engine Crankshafts Products
  2. sku: 18864761094260881
  3. CARPOPART 8125602280/12555566/12560228

CARPOPART Crankshaft Position Sensor 8125602280/12555566/12560228 NO.12555566

fits model: 1500, Sierra. make: Gmc. year: 1999–2006.

8125602280 Carpopart 8125602280/12555566/12560228 Crankshaft Position Sensor For Gmc Sierra 1500 99-06 No.12555566

( Brand: Carpopart ), ( Manufacturer Part Number: 8125602280/12555566/12560228 ), ( Part Type: Crankshaft Sensor ), ( Material: Metal, Plastic ), ( Shell Color: Black ), ( Package Content: 1 Pc Crankshaft Position Sensor ), ( Note: This Is Not Oem Product, Accessory Only. ), ( Net Weight: 40g ), ( Fitment 1: For Chevrolet Camaro Z28, Z28 Ss 5.7 1998-2002 ), ( Fitment 2: For Chevrolet Corvette Base 5.7 6.0 1997-2005 ), ( Fitment 3: For Chevrolet Impala Ss 5.3 2006-2007 ), ( Fitment 4: For Gmc For Sierra 1500 Sl, Sle, Slt 4.8 5.3 99-06 ), ( Fitment 5: For Gmc For Sierra 1500 Base, Denali 4.8 5.3 02-05 ), ( Fitment 6: For Chevrolet Silverado 1500 Base, Ls, Lt 99-05 ), ( Fitment 7: For Chevrolet Tahoe Ls, Lt, Z71 4.8 5.3 2003-2006 ), ( Fitment 8: For Gmc Yukon Sle, Slt 4.8 5.3 2000-2006 ), ( California Prop 65 Warning: Cancer And Reproductive Harm Www.p65warnings.ca.gov )

Review CARPOPART 8125602280/12555566/12560228 Crankshaft Position Sensor Gmc No.12555566 fits SIERRA 1500 1999–2006

The **Carpopart 8125602280/12555566/12560228 Crankshaft Position Sensor** is a high-performance, direct-fit replacement designed specifically for GMC Sierra 1500 models manufactured between 1999 and 2006, featuring the iconic **L56, L67, and L74 V8 engines** (commonly found in the 5.3L and 6.0L configurations). Engineered to meet or exceed OEM specifications, this sensor is crafted from durable, corrosion-resistant materials to ensure long-term reliability in demanding driving conditions. The unit incorporates a **precision-machined magnetic pickup** and a robust, sealed housing to protect against moisture, dust, and temperature fluctuations, making it ideal for both urban commuters and off-road enthusiasts who demand dependable performance. Its **direct bolt-on compatibility** eliminates the need for modifications, ensuring a seamless installation that restores accurate crankshaft position feedback to the engine control module (ECM). This critical sensor plays a vital role in fuel injection timing, ignition sequencing, and overall engine efficiency, preventing misfires, rough idling, and potential stalling common symptoms of a failing crank sensor. Built with **high-quality conductive materials and a robust mounting bracket**, this sensor guarantees consistent signal output, helping maintain optimal engine performance and fuel economy. Whether you're restoring a classic GMC Sierra or upgrading an aging vehicle, the Carpopart crankshaft position sensor delivers the precision and durability needed to keep your powertrain running smoothly for thousands of miles.

### **Pros and Cons of buying a Carpopart Crankshaft Position Sensor (Part Numbers: 8125602280, 12555566, 12560228) for a GMC Sierra 1500 (1999-2006)**

#### **Pros:**

1. **Compatibility** The part is explicitly listed for GM vehicles, including the 1999-2006 GMC Sierra 1500 with the 5.3L V8 engine (L31/L36/L37/L38). Carpopart ensures proper fitment, reducing the risk of installation issues.

2. **Quality Construction** Carpopart is a reputable aftermarket brand known for producing reliable sensors with durable materials. The crankshaft position sensor is designed to withstand engine vibrations and temperature fluctuations.

3. **Cost-Effective Alternative** Compared to OEM (Original Equipment Manufacturer) sensors, this aftermarket part offers significant savings without sacrificing performance. Pricing is competitive, making it a budget-friendly option for DIY or professional repairs.

4. **Easy Installation** The sensor is designed for straightforward replacement, requiring basic tools (socket wrench, torque wrench, and possibly a scan tool for sensor relearning). No major modifications to the engine are needed.

5. **Warranty Coverage** Carpopart typically provides a warranty (often 6-12 months or longer), offering peace of mind in case of premature failure. Warranty terms should be verified before purchase.

6. **Availability and Shipping** As an online retailer, Carpopart offers fast shipping and widespread availability, reducing wait times compared to local auto parts stores that may stock limited inventory.

7. **Positive User Feedback** Many customers report satisfactory performance with Carpopart sensors, citing improved engine operation, reduced check engine lights, and longevity comparable to OEM parts.

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#### **Cons:**

1. **Mixed Quality Perception** While Carpopart is generally reliable, some users report variations in quality depending on the specific batch or supplier. A few customers have experienced early failures, though this is less common with well-reviewed sellers.

2. **Potential Counterfeit Concerns** Since this is an aftermarket part, there is a risk of purchasing counterfeit or low-quality fakes, especially if buying from unauthorized resellers. Verifying the seller s reputation and checking for authentic packaging is crucial.

3. **Sensor Relearning Required** After replacement, the engine s ECU (Engine Control Unit) may need to be relearned to recognize the new sensor. This often involves clearing the check engine light and, in some cases, using a scan tool to reset parameters.

4. **Compatibility Nuances** While the part numbers cover most 5.3L V8 applications, there may be slight variations in wiring or mounting between engine families (e.g., L31 vs. L36). Double-checking the vehicle s specific engine code (found in the VIN or service manual) ensures the correct part is ordered.

5. **No Physical Inspection** Purchasing online means you cannot physically inspect the sensor before buying. Defective or damaged units may arrive, though Carpopart s return policy should cover such issues.

6. **Installation Challenges** Some users with limited mechanical experience may struggle with the installation, particularly if the sensor is located in a tight or hard-to-reach area. Consulting a repair guide or professional assistance may be necessary.

7. **Potential Compatibility with Aftermarket Mods** If the vehicle has aftermarket modifications (e.g., performance chips, fuel injectors, or exhaust upgrades), the new sensor may not integrate perfectly with the ECU s tuning. A scan tool may be needed to ensure optimal performance.

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### **Conclusion**

The **Carpopart crankshaft position sensor (part numbers 8125602280, 12555566, 12560228)** is a **strong aftermarket alternative** to OEM sensors for the 1999-2006 GMC Sierra 1500 with a 5.3L V8 engine. It offers **cost savings, reliability, and ease of installation**, making it a practical choice for both DIY enthusiasts and professional mechanics. However, **potential risks such as counterfeit parts, quality inconsistencies, and the need for sensor relearning** must be considered.

To mitigate risks, **purchase from a verified seller with positive reviews**, confirm the exact engine code for compatibility, and ensure the sensor is properly installed and relearned. If budget allows, an **OEM or high-quality brand sensor** (e.g., Delphi, Bosch, or ACDelco) may offer slightly better long-term reliability but at a higher cost.

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### **Recommendation**

- **For most users**, the **Carpopart sensor is a solid and cost-effective choice**, especially if purchased from a reputable retailer like Amazon, RockAuto, or Carpart.com. It strikes a balance between affordability and performance.

- **If reliability is the top priority**, consider an **OEM or premium aftermarket brand** (e.g., ACDelco GM 93079735 or Bosch 0 261 231 016) for a slightly higher upfront cost but with potentially longer lifespan.

- **Always verify the part numbers** with your vehicle s engine code to avoid mismatches.

- **Follow proper installation steps**, including sensor relearning, to ensure the engine runs smoothly after replacement.

- **Monitor for warning signs** (e.g., rough idle, stalling, or check engine light) post-installation, and address any issues promptly.

**Final Verdict:** The Carpopart sensor is **highly recommended for most drivers** seeking a reliable, budget-friendly replacement, provided it is sourced from a trusted seller and installed correctly.

Details:

Material: Metal, Plastic. Direct replace and install, convenient to use. It is a good replacement for the old or broken one. For Chevy Corvette Base 5.7 6.0 1997 -2005.

For Chevy Impala SS 5.3 2006 -2007. For Chevy Silverado 1500 Base, LS, 4.8 5.3 1999 -2005. Crankshaft Position Sensor for GMC Sierra 1500 99-06 No.12555566: Vehicle Fitment:for Chevy Camaro Z28, Z28 SS 5.7 1998 -2002. Item Benefit:The crankshaft position sensor detects engine speed, piston end and firing cylinder signals.

Item Feature:Color: Black.

part #: 8125602280 prices

  • $21.19-$22.49

specifications cranshafengin:

  • for models: 1500, Sierra
  • for makes: Gmc
  • for years: 1999-2006
  • brand: Carpopart
  • mpn: 8125602280/12555566/12560228
  • part type: Crankshaft Sensor
  • material: Metal, Plastic
  • shell color: Black
  • package content: 1 Pc Crankshaft Position Sensor
  • note: This Is Not Oem Product, Accessory Only.
  • net weight: 40g
  • fitment 1: For Chevrolet Camaro Z28, Z28 Ss 5.7 1998-2002
  • fitment 2: For Chevrolet Corvette Base 5.7 6.0 1997-2005
  • fitment 3: For Chevrolet Impala Ss 5.3 2006-2007
  • fitment 4: For Gmc For Sierra 1500 Sl, Sle, Slt 4.8 5.3 99-06
  • fitment 5: For Gmc For Sierra 1500 Base, Denali 4.8 5.3 02-05
  • fitment 6: For Chevrolet Silverado 1500 Base, Ls, Lt 99-05
  • fitment 7: For Chevrolet Tahoe Ls, Lt, Z71 4.8 5.3 2003-2006
  • fitment 8: For Gmc Yukon Sle, Slt 4.8 5.3 2000-2006
  • california prop 65 warning: Cancer And Reproductive Harm Www.p65warnings.ca.gov

seller cranshafengin:

  • # reviews: 21376
  • city: Florence, Kentucky
  • rating: 99.5%

shipping cranshafengin:

  • transit: 4-8 Days
  • class: Standard
  • service: Standard
  • cost: $0.00
  • type: Fixed

general cranshafengin:

  • Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
  • condition: New

offer cranshafengin:

  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • quantity: 2
  • started: February 15, 2026

payments cranshafengin:

  • other
  • wallet: Paypal
  • credit card: Discover

returns cranshafengin:

  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Seller
for models: 1500, sierra, for makes: gmc, for years: 1999-2006, part type: crankshaft sensor, shell color: black, package content: 1 pc crankshaft position sensor, note: this is not oem product, accessory only., net weight: 40g, fitment 1: for chevrolet camaro z28, z28 ss 5.7 1998-2002, fitment 2: for chevrolet corvette base 5.7 6.0 1997-2005, fitment 3: for chevrolet impala ss 5.3 2006-2007, fitment 4: for gmc for sierra 1500 sl, sle, slt 4.8 5.3 99-06, fitment 5: for gmc for sierra 1500 base, denali 4.8 5.3 02-05, fitment 6: for chevrolet silverado 1500 base, ls, lt 99-05, fitment 7: for chevrolet tahoe ls, lt, z71 4.8 5.3 2003-2006, fitment 8: for gmc yukon sle, slt 4.8 5.3 2000-2006, california prop 65 warning: cancer and reproductive harm www.p65warnings.ca.gov,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, material: metal, plastic, sku: 18864761094260881,
Carpopart 12555566 Is Similar To:
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2 offers $21.19–$22.49 USD
  • New. Offer #1 priced at $22.49 + $0.00 shipping estimate = $22.49* total. Vehicle Fitment:for Chevy Camaro Z28, Z28 SS 5.7 1998-2002for Chevy Corvette Base 5.7 6.0 1997-2005for Chevy Impala SS 5.3 2006-2007for Chevy Silverado 1500 Base, LS, LT 4.8 5.3 1999-2005for Chevy Silverado 2500 6.0 1999-2004for Chevy Silverado 3500 6.0 2001-2006for Chevy Express 1500 5.3 2003-2007for Chevy Express 2500 3500 4.8 5.3 6.0 2003-2007for Chevy Tahoe LS, LT, Z71 4.8 5.3 2003-2006for Chevy Suburban 1500 LS, LT, Z71 5.3 2000-2006for GMC for Sierra 1500 SL, SLE, SLT 4.8 5.3 1999-2006for GMC for Sierra 1500 Base, Denali 4.8 5.3 2002-2005for GMC Yukon SLE, SLT 4.8 5.3 2000-2006for GMC Yukon XL 1500 Denali, SLE, SLT 5.3 6.0 2000-2006for Cadillac Escalade 5.3 6.0 2002-2006for Cadillac Escalade ESV 6.0 2003-2006for Cadillac Escalade EXT 6.FREE SHIPPING
  • New. Offer #2 priced at $21.19 + $0.00 shipping estimate = $21.19* total. Suitable for:for Chevy Camaro Z28, Z28 SS 5.7 98-02for Chevy Corvette Base 5.7 97-05for Chevy Silverado 1500 Base, LS, LT 4.8 5.3 99-05for Chevy Silverado 2500 Base, LS, LT 6.0 99-04for Chevy Silverado 3500 Base, LS, LT 6.0 01-05for Chevy Suburban 1500 LS, LT 5.3 6.0 00-06for Chevy Tahoe LS, LT 4.8 5.3 00-06for Cadillac Escalade Base 5.3 6.0 02-06for GMC for Sierra 1500 Base, Denali, SLE, SLT, WT 4.8 5.3 6.0 02-05for GMC for Sierra 2500 SL, SLE, SLT 5.3 6.0 99-02for GMC for Sierra 2500 Base, SLE, SLT, WT 6.0 03-04for GMC for Sierra 3500 Base, SLE, SLT 6.0 02-05for GMC Yukon Denali, SLE, SLT 4.8 5.3 6.FREE SHIPPING

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