Case file · JEEP-GRAND-CHEROKEE-2011-2021 · Field document

Jeep Grand Cherokee 2011–2021 · Pre-purchase checklist

Bring this to the inspection. Every check below is specific to this generation's documented failure modes — not generic used-car advice.

1. Check 01

   On 2011–2013 3.6L cars: cold-start it and watch for a check-engine light / rough idle. Pull codes — P0300/P0302/P0304/P0306 (left-bank misfires) point at the known cylinder-head wear.

2. Check 02

   On any 2011–2013 car: test EVERY electrical function — remote start, power locks, horn, wipers, fuel pump priming. Erratic behavior or no-start/hard-start is the classic TIPM symptom.

3. Check 03

   Confirm whether the car has Quadra-Lift AIR suspension or steel coil springs. With the engine running, watch it raise/lower through its modes and listen for a constantly-running compressor or a 'Service Air Suspension' message.

4. Check 04

   On the EcoDiesel: confirm the EGR-cooler recall (NHTSA 19V-757 / W79) was completed by VIN, and ask about oil-cooler history. Look for coolant loss with no external leak.

5. Check 05

   On 2014+ cars: test-drive at light throttle 40–60 mph and through stop-and-go. Harsh 1-2/2-1 shifts or a shudder at lockup is the 8-speed complaint — ask if TCM software is up to date.

6. Check 06

   Pull up the carpet edges (front and rear footwells) and smell for must/mildew — the WK2 has a well-documented sunroof-drain/cowl water-leak problem that ruins electronics.

7. Check 07

   Check service records for cooling work; overheating from thermostat/EGR-cooler issues is common on heavily-complained years.