Buying & Selling Guide

• ✅ Cold start tick test — Start a fully cold engine and listen immediately. Loud tick that persists beyond 15 seconds = AFM lifter damage. Walk away.
• ✅ Oil consumption check — Ask seller when last oil change was and current level. More than 1 qt low = AFM consumption issue.
• ✅ 4WD engagement test — Engage all 4WD modes. Listen for grinding or hesitation.
• ✅ Air suspension check — All four corners should be level. Let sit overnight.
• ✅ Dashboard for cracks — 2003–2006 models especially. Replacement is $800–$2,000.
• ✅ Third row and rear entertainment — Test all features. Expensive to repair if faulty.
• ✅ Frame inspection — Especially on high-mileage units in rust-belt states. Check pinch welds and crossmembers.
• ✅ Catalytic converters — Confirm present (theft is rampant). Listen for sudden increase in exhaust volume.
• ✅ Tire condition — Stock Escalade tires ($250–$400 each) — check tread depth and age (DOT date on sidewall). Replace after 6 years regardless of tread.

• ✅ Cold start timing chain rattle — Listen the first 3 seconds after cold start. Rattle = timing chain stretched. P0008, P0016 codes confirm it.
• ✅ Oil change records — 3.6L timing chain life depends entirely on oil change frequency. No records = assume worst.
• ✅ CUE system test — Run all functions. Swipe, pinch, tap every zone. A bad CUE screen is $500–$1,200 to replace.
• ✅ Magnetic Ride shocks — Drive over rough pavement. Rough, bouncy ride or SERVICE RIDE CONTROL = failed shocks ($1,200–$2,000 to replace all four)
• ✅ Rear differential (CTS-V) — Listen for whine on acceleration and deceleration. Whine = worn pinion bearings.
• ✅ Carbon buildup test (2.0T) — Data log fuel trims; elevated short-term fuel trim (above +10%) suggests intake restriction

Classic Cadillacs reward patient buyers who know what to look for. The main enemies are rust, deferred maintenance, and poor previous repairs.

• ✅ Full undercarriage inspection — Frame, rocker panels, floor pans, trunk floor. Structural rust is a deal-breaker. Surface rust is manageable.
• ✅ Engine start and warm-up — Let it reach full operating temperature. Check for coolant leaks, oil leaks, overheating.
• ✅ All power accessories — Windows, seats, mirrors, antenna, locks. Parts are scarce and expensive.
• ✅ Body gap consistency — Uneven panel gaps = accident damage. Look across all doors and trunk lid.
• ✅ Paint inspection under direct light — Waves in body panels = filler. Hold a straight edge along body lines.
• ✅ Numbers matching — Check VIN on dashboard, door jamb, engine block, and frame. For collector cars, numbers matching adds 30–50% to value.
• ✅ Get an independent appraisal — A Cadillac specialist or AACA (Antique Automobile Club) appraiser can spot issues you'd miss.

• ✅ Recall status — Run VIN through NHTSA.gov. All open recalls must be addressed by the dealer at no charge.
• ✅ Software update history — Dealer can show all OTA and dealer updates applied. Gaps may indicate issues were present.
• ✅ Super Cruise calibration — If equipped, verify Super Cruise functions and camera is aligned. Expensive to calibrate.
• ✅ CPO certification — CPO models get extended warranty. Verify CPO status in writing — dealers sometimes misrepresent this.
• ✅ Check for prior rental/fleet use — Carfax or AutoCheck report. Rental cars are typically harder on transmissions and suspension.