1. Exhaust & Emission Parts To Buy
  2. sku: 21835492074533891
  3. CADILLAC 608.GM6V08

CADILLAC 608.GM6V08 Egr

fits model: Dts. make: Cadillac. year: 2008.

608.gm6v08 Cadillac Egr Fits 08 Dts 2988141

( Genuine Oem: Yes ), ( Ipn: 608.gm6v08 )

Review CADILLAC Egr fits DTS 2008

The **Cadillac 608 GM6V08 EGR (Exhaust Gas Recirculation) 08 DTS** is a high-performance, direct-injection diesel engine designed for heavy-duty commercial and industrial applications, offering an exceptional blend of power, efficiency, and durability. Engineered by General Motors global diesel division, this 6.0-liter V8 turbocharged engine is a robust workhorse built to thrive in demanding environments, from long-haul trucking and construction equipment to marine and generator applications. The **GM6V08** architecture leverages advanced cylinder deactivation technology (DTS Displacement on Demand Technology System) to optimize fuel economy and emissions compliance without sacrificing performance. This system dynamically shuts down up to four cylinders under light-load conditions, reducing parasitic losses and improving efficiency while maintaining smooth operation. The **EGR (Exhaust Gas Recirculation) system** plays a critical role in meeting stringent emissions standards by recirculating a portion of the exhaust back into the intake manifold, lowering combustion temperatures and reducing nitrogen oxide (NOx) emissions a key feature for compliance with EPA and global regulations.

Under the hood, the **608** delivers a formidable output, typically producing **350 400 horsepower and 750 900 lb-ft of torque**, depending on the specific application and tuning. Its **direct-injection fuel system** ensures precise fuel delivery, enhancing combustion efficiency and reducing soot formation, while the **high-pressure common-rail injection** (up to 25,000 psi) provides optimal atomization for cleaner, more powerful operation. The engine s **turbocharged architecture** is complemented by a **variable geometry turbocharger (VGT)**, which dynamically adjusts turbine vane angles to optimize boost pressure across the engine s operating range, improving both low-end torque and high-speed performance. A **coolant-cooled exhaust manifold** and **intercooler** further enhance efficiency by maintaining optimal intake air temperatures, while the **closed-loop EGR system** with a **high-flow EGR cooler** ensures reliable operation under varying thermal conditions.

Durability is a cornerstone of the **GM6V08**, with a **cast-iron block and aluminum cylinder heads** designed for longevity, even in the harshest conditions. The engine features **forged connecting rods, precision-machined pistons, and a robust crankshaft** to withstand high torque loads, while **dry-sump lubrication** ensures consistent oil flow and protection against oil starvation in extreme angles or high-G applications. Advanced **emissions control technologies**, including a **diesel particulate filter (DPF) and selective catalytic reduction (SCR) system**, are integrated to meet modern environmental standards, making it suitable for both on-road and off-road use. The **08-series designation** indicates a refined iteration of the engine, incorporating updates to the **fuel system, turbocharger, and emissions hardware** for improved reliability and performance.

In terms of serviceability, the **GM6V08** is built with accessibility in mind, featuring **easy-to-reach components** such as the **fuel injectors, turbocharger, and EGR cooler**, which simplifies maintenance and reduces downtime. The engine s **electronic control module (ECM)** provides real-time diagnostics and fault codes, allowing for quick troubleshooting, while the **integrated aftertreatment system** (including **DPF regeneration and SCR dosing**) ensures compliance without compromising performance. Whether powering a **Class 8 truck, a heavy-duty generator set, or a marine vessel**, the **Cadillac 608 GM6V08 EGR 08 DTS** stands as a testament to GM s commitment to delivering a diesel engine that balances **power, efficiency, and environmental responsibility** making it a versatile and dependable choice for industries that demand the best in heavy-duty performance.

### **Pros and Cons of Buying a 2008 Cadillac CTS with a GM 6.0L V8 (L36) Engine**

#### **Pros**

1. **Strong Engine Performance**

The 6.0L V8 (L36) is a robust powerplant capable of producing around 335 horsepower and 370 lb-ft of torque, which provides solid acceleration and towing capability. It is also known for its durability when properly maintained.

2. **Decent Fuel Economy for a V8**

While not exceptional, the 6.0L V8 in the CTS offers better fuel efficiency than many other V8 engines of its era, averaging around **16-18 MPG in the city and 22-24 MPG on the highway** when driven conservatively. This is relatively efficient for a V8 from that time.

3. **Comfortable and Refined Ride**

The CTS is known for its smooth ride, especially on highways, with well-damped suspension and quiet cabin noise. The interior is spacious and well-appointed, with quality materials in higher trims.

4. **Reliable Transmission Options**

The 6.0L V8 was commonly paired with a **6-speed automatic transmission (6L90)**, which is a robust and reliable unit if maintained properly. Some models also came with a **4L65-E 4-speed automatic**, which is less common but still functional.

5. **Good Resale Value for a Luxury Sedan**

Compared to other luxury sedans from the late 2000s, the CTS retains decent resale value, especially if well-maintained. The brand recognition of Cadillac also helps in trade-in value.

6. **Available Luxury Features**

Depending on the trim, the 2008 CTS may include features such as:

- Leather upholstery

- Power-adjustable seats

- Heated/ventilated seats

- Bluetooth connectivity (in later models)

- Uconnect infotainment system (in some trims)

- Available navigation system

7. **Potential for Modifications**

The 6.0L V8 is a popular engine for tuning, allowing for upgrades like cold air intakes, exhaust systems, and performance chips to improve power and throttle response.

8. **Lower Maintenance Costs Compared to Some Competitors**

While not cheap, the 6.0L V8 is generally less expensive to maintain than high-performance or turbocharged engines from competitors like BMW or Mercedes at the time.

---

#### **Cons**

1. **High Maintenance Costs Over Time**

The 6.0L V8 is a **high-compression, high-performance engine** that requires **premium fuel and regular maintenance** (oil changes every 5,000 miles, timing belt replacement every 100,000 miles, and valve cover gasket replacements as needed). Neglecting maintenance can lead to **expensive repairs**, such as:

- **Head gasket failures** (common in some L36 engines, though less so in the CTS than in trucks like the Silverado).

- **Rod bearing wear** (due to high compression and heat).

- **Cooling system issues** (water pump, thermostat, and radiator failures are frequent).

- **EGR (Exhaust Gas Recirculation) system problems** (clogged EGR coolers and passages, which can cause rough idling, loss of power, and increased emissions failures).

2. **Fuel Economy is Still Poor for a V8**

While better than many V8s, the 6.0L still drinks fuel. Expect **around 16-22 MPG**, which is higher than a typical V8 but still not great for daily driving.

3. **Rust Concerns (Especially in Snowy Regions)**

The CTS, like many GM vehicles from the late 2000s, can suffer from **underbody rust** if not stored properly. Inspect the **rocker panels, wheel wells, and frame rails** before purchasing.

4. **Transmission Issues in Some Models**

- The **6L90 transmission** can develop **rough shifting or delayed engagement** if fluid is not changed regularly.

- The **4L65-E** (in older trims) is less reliable and may require **fluid changes and potential rebuilds** over time.

5. **Electrical and Infotainment Glitches**

The **Uconnect system** (in some trims) can be finicky, with issues like **slow response, software bugs, or Bluetooth connectivity problems**. The **iPod integration** (pre-Uconnect) may also fail over time.

6. **Recalls and Unresolved Issues**

The 2008 CTS had several **recalls** related to:

- **Airbag deployment issues** (Takata airbags, though the CTS was less affected than some other GM models).

- **Fuel pump failures** (some reports of stalling or hard starts).

- **Cooling system leaks** (water pump and hose failures).

Always check the **NHTSA recall database** before buying.

7. **Depreciation and Market Demand**

While the CTS holds value better than some luxury sedans, it is **not a highly sought-after used car**. You may struggle to find parts or mechanics familiar with the model compared to more common vehicles like the Camry or Accord.

8. **Potential EGR and DPF Issues (Diesel Confusion)**

- The **EGR (Exhaust Gas Recirculation) system** on the 6.0L V8 can become **clogged with carbon deposits**, leading to **rough idling, loss of power, and check engine lights**.

- Some owners confuse the **EGR system with diesel-related issues** (since the 6.0L is also used in diesel trucks), but the CTS version is **gas-only**. However, the same maintenance principles apply **regular cleaning or replacement of EGR components** is necessary.

9. **Towing and Hauling Limitations**

While the 6.0L can tow **up to 5,000 lbs with a trailer brake controller**, the CTS is **not designed for heavy-duty towing**. Overloading can strain the **transmission, drivetrain, and cooling system**.

10. **Discontinued Aftermarket Support**

Since Cadillac has shifted focus to newer models, **aftermarket parts and tuners** for the 2008 CTS are **less common** than for more recent or popular vehicles.

---

### **Ending Conclusion**

The **2008 Cadillac CTS with a 6.0L V8 (L36) engine** is a **solid choice for someone who wants a comfortable, powerful luxury sedan** but is prepared for **higher maintenance costs and potential long-term issues**. It offers **good performance, decent fuel economy for a V8, and a refined ride**, making it a practical option for those who prioritize **driving enjoyment and luxury** over ultra-low running costs.

However, **buyers must be aware of the engine s maintenance needs**, particularly the **EGR system, cooling system, and transmission fluid changes**. If you **neglect upkeep**, the **6.0L V8 can become an expensive problem**, especially with **head gasket or rod bearing failures**.

For **daily driving**, the CTS is a **great car** if you can afford the **premium fuel and regular maintenance**. If you re looking for a **low-cost, high-mileage commuter**, a **4-cylinder or turbocharged sedan** (like a Camry or Accent) would be a better choice.

---

### **Recommendation**

**Buy the 2008 Cadillac CTS with a 6.0L V8 if:**

You **prioritize performance and luxury** over fuel efficiency.

You **plan to maintain it properly** (oil changes, cooling system checks, EGR cleaning).

You **drive it moderately** (not for extreme towing or high-mileage daily use).

You **find a well-documented vehicle** with **service records** showing past maintenance.

You **enjoy working on or modifying cars** (the 6.0L is tunable and fun to work on).

**Avoid the 2008 Cadillac CTS with a 6.0L V8 if:**

You **can t afford premium fuel and regular maintenance**.

You **plan to drive it hard** (towing, high RPMs, frequent long trips).

You **find major red flags** (smoke from exhaust, coolant leaks, rough idling, check engine lights).

You **prefer a lower-maintenance vehicle** (e.g., a Toyota Camry, Honda Accord, or Ford Fusion).

**Final Verdict:**

The **2008 CTS 6.0L is a great car for the right buyer** someone who **values performance, comfort, and is willing to invest in its upkeep**. If you **check for rust, service history, and EGR/cooling system health**, it can be a **rewarding and enjoyable vehicle** for years. However, **budget for maintenance** and **expect higher costs than a typical sedan**.

Details:

As well charges are based on dimensional weight, not actual weight. Will not include any wiring our mounting hardware. We ask that you verify the actual condition versus what are expecting to prevent any issues later. Residential Limited Access fees range from $50-$100.

Orders placed after 10:00 am CST cannot be guaranteed shipping that day if option applies to your listing. That is not the way this system was designed. Please verify identification numbers, wheelbase measurements, and ID codes. Most carriers do not allow hand unloading.

A telephone number is required. This system was designed as a benchmark with certain understandings. A condition does not mean new or perfect it means the item is in great used. If an RMA# is not provided there may be a delay in processing the return.

The difficulty as you can see is placing exact charges on each listing when so many variables are present. Donor Vehicle model: DTS Year: 2008 Mileage: 131000 not available or unknown Stock Number: 210423 Notes: EGR only, item is used and will appear as such. This may vary during heavy traffic time periods and buyers would be notified of any anticipated delay. We prefer it, its faster and it provides a written record for your protection ours.

A business/commercial delivery address is required for the stated shipping price. Essentially this means that the item may be in better or worse condition than stated. Will not include EGR tube or any sensors. A Home-based business, or a farm, do not qualify as business/commercial address for logistical purposes.

Common used part visual blemishes most likely present. They are not reflective of the actual part or condition being sold. Lift gate Fees range from $50-$100. Buyers must be willing to answer their calls and discuss the delivery of item with carrier.

Specific item information and warranty is posted on the listing. Visual flaws still may be present as the item is used.

part #: 608.gm6v08 prices

  • $25.99-$70.50

specifications emissyste:

  • for models: Dts
  • for makes: Cadillac
  • for years: 2008
  • genuine oem: Yes
  • ipn: 608.gm6v08

payments emissyste:

  • credit card: Visa
  • other
  • wallet: Google-pay

seller emissyste:

  • city: Arena, Wisconsin
  • rating: 99.8%
  • # reviews: 10144

shipping emissyste:

  • type: Fixed
  • transit: 2-5 Days
  • service: Standard
  • class: Standard
  • cost: $0.00

returns emissyste:

  • paid by: Buyer
  • policy: Returns Accepted
  • time: 30 Days

offer emissyste:

  • started: May 6, 2026
  • quantity: 1
  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
  • best offers: True

general emissyste:

  • Car Truck Parts Accessories > Exhaust Emission Systems > EGR Parts Valves
  • condition: Used
for models: dts, for makes: cadillac, for years: 2008, genuine oem: yes,
manufacturer: cadillac, category: auto parts > car truck parts accessories > exhaust emission systems > egr parts valves, sku: 21835492074533891,
Cadillac 2988141 Is Similar To:
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2 offers $25.99–$70.50 USD
  • Used. Offer #1 priced at $70.50 + $12.00 shipping estimate = $82.50* total. EGR Valve 4.6L.+$12.00 shipping
  • Used. Offer #2 priced at $25.99 + $0.00 shipping estimate = $25.99* total. FREE SHIPPING

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