CADILLAC 3.6L AWD ENGINE

What Is a Cadillac 3.6L AWD Engine?

The Cadillac 3.6L AWD Engine (commonly the LLT, LGX, or LFX) is a modern GM engine featured in Cadillac models such as the CTS, SRX, STS, and XT5. It is often paired with AWD in many configurations—making it quite sought-after for replacements or swaps

Popular Variants Cadillac 3.6L AWD Engine

• LLT – Early-gen 3.6L V6 used in CTS (~2008–2013).

• LFX – Phase 2, improved version used in later models like SRX and XT5.

• LGX – Even more refined, used in newer CTS models.

Engine codes and application details matter for compatibility.

 What’s Available on the Market & Price Ranges On Cadillac 3.6L AWD Engine

Pre-Owned Engines

• 2008–2009 Cadillac 3.6L AWD Engine (LY7) with ~116K miles: $956.77 (90-day warranty, Plus shipping)

• 2014 Cadillac 3.6L AWD Engine with ~81K miles: $1,000 “or Best Offer” + $500 shipping

• 10–11 Cadillac 3.6L AWD Engine no core charge, ~101,154 miles: $1,595 + $400 shipping

Used Engine Assemblies (SRX)

• 2012 Cadillac 3.6L AWD Engine, 78K miles: $2,300 (1-year warranty)

• Other listings around $800–$1,600 depending on miles and variants

Bare Blocks & Remanufactured Units

• Bare Cadillac 3.6L AWD Engine block (2012 CTS): $578 (approx.)

• Remanufactured Cadillac 3.6L AWD Engine (LLT, 2008–11 CTS/STS) with 3-year warranty: $4,288

Budget and Premium Spectrum

• Lowest-cost bare engine block: ~$578.

• Mid-range used engines: $900–$1,600 depending on mileage and warranty.

• Upper range requiring nearly new condition or reman units: $2,000–$2,300 or higher for premium condition.

• Fully remanufactured with warranty: ~$4,300.

 Compatibility & Fitment Considerations

Engine Variation Impacts

• Engine Code & VIN Compatibility: The engine’s VIN (8th-10th digits) indicates application, which must match your transmission, AWD system, and ECU

• Parts and Sensors: AWD systems often include sensors and computers monitoring wheel slip and torque distribution—critical for proper function. If your swap lacks these, the system may misbehave

• Transmissions: The engine must pair with a compatible transmission; some swaps keep the original tranny (e.g., in Camaro swaps) but require mounting hardware and ECU adjustments

Mechanical Reliability (From Community Feedback)

• Oil consumption: The Cadillac 3.6L AWD Engine burns oil faster than average; expect 3–4K mile oil change intervals

• Timing chain issues: Early HFV6 Cadillac 3.6L AWD Engine had timing chain problems. Many were improved post-2013, but maintain vigilance

• Water pump failures: A known weak point on these engines

 Key Purchase Recommendations Cadillac 3.6L AWD Engine

 Real-World Insights from Forums

Some Redditors shared helpful experiences:

Another user explaining swap needs:

From AWD part sourcing talk:

 Final Summary

• Used engines: Great value at $900–$1,600; just verify mileage and condition.

• Remanufactured units: $4,000+—protect your investment with warranty.

• Bare engine blocks: Budget option (~$578), but expect to source parts and rebuild.

• Watch for: Oil consumption, timing chain issues, water pump failures.

• Always prioritize engine code match, AWD compatibility, and proper mount/shipping packages—and set aside a maintenance budget for post-install updates.

Example Buying Scenario (for 2010 CTS AWD owner):

You find a 2010–2011 Cadillac 3.6L AWD Engine with 101K miles listed for $1,595 + $400 shipping

• Initial cost: $1,595 + $400 = $1,995.

• Check VIN variant (LLT vs LFX?): Ask seller.

• Request inspection details: seals, compression, head condition.

• Post-purchase: Replace water pump, timing components, flush oil, install fresh fluids.

• Maintain schedule: Oil changes every 3–4k miles, monitor for leaks or chain noise.

Outcome: Reliable, cost-effective swap with planned maintenance and peace of mind.