TIPM (Totally Integrated Power Module) Failure
high- Typically appears
- 80–130k mi
- Estimated repair
- $400 – $1,100
2007 Jeep
Grand CherokeeSUV
SUV
The 2007 Jeep Grand Cherokee is the second year of the WK generation (2005–2010), a body-on-frame-style mid-size SUV that blends genuine off-road capability with a reasonably comfortable interior. It slots between the budget-friendly Cherokee/Liberty and the larger Commander in Jeep's lineup. The 3.7L V6 was the base engine, paired with a 5-speed automatic and standard Quadra-Trac I or optional Quadra-Drive II four-wheel drive systems. By 2007, most early WK teething issues had been addressed, but the platform still carries known weak points around the rear differential, ball joints, and electronics. Fuel economy is poor by modern standards — 15/20 mpg — so buyers should factor pump costs into ownership math, especially with Wisconsin commuting. As a used buy, the 2007 Grand Cherokee can be a solid value if it has been maintained and the frame/undercarriage are rust-free. Given Wisconsin road salt, that last point cannot be overstated — rust is the biggest killer of WK Grand Cherokees in the upper Midwest.
Reliability
3/5
Verified data
Specs shown for Grand Cherokee 2WD — the most common configuration.
Other trims may vary in engine, drivetrain, or fuel economy. Sign in to see your vehicle's exact specs.
Engine
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Drivetrain
RWD
Fuel
Gasoline
MPG
15 city / 20 hwy / 17 combined
Seats
—
Doors
—
Body
Sport Utility Vehicle - 2WD
Overview
AI-curatedThe 2007 Jeep Grand Cherokee is the second year of the WK generation (2005–2010), a body-on-frame-style mid-size SUV that blends genuine off-road capability with a reasonably comfortable interior. It slots between the budget-friendly Cherokee/Liberty and the larger Commander in Jeep's lineup. The 3.7L V6 was the base engine, paired with a 5-speed automatic and standard Quadra-Trac I or optional Quadra-Drive II four-wheel drive systems. By 2007, most early WK teething issues had been addressed, but the platform still carries known weak points around the rear differential, ball joints, and electronics. Fuel economy is poor by modern standards — 15/20 mpg — so buyers should factor pump costs into ownership math, especially with Wisconsin commuting. As a used buy, the 2007 Grand Cherokee can be a solid value if it has been maintained and the frame/undercarriage are rust-free. Given Wisconsin road salt, that last point cannot be overstated — rust is the biggest killer of WK Grand Cherokees in the upper Midwest.
Known for
- Genuine off-road capability with available Quadra-Drive II
- Comfortable ride and quiet cabin for its class and era
- Wide engine choice (3.7L V6, 4.7L V8, 5.7L Hemi V8, 3.0L diesel)
Best for
- Light to moderate off-road use and trail driving
- Snow and winter commuting with 4WD equipped trims
- Towing up to 6,500 lbs (V6) or 7,400 lbs (Hemi)
Watch for
- Frame and undercarriage rust on upper Midwest examples
- TIPM (Totally Integrated Power Module) electrical gremlins
- Front lower ball joints wearing prematurely
- Rear differential noise and limited-slip failures
- High fuel costs — the 3.7L V6 is thirsty and not particularly powerful
Common issues by mileage
6 knownFront Lower Ball Joint Wear
high- Typically appears
- 60–100k mi
- Estimated repair
- $300 – $600
Rear Differential Noise / Limited-Slip Clutch Pack Wear
medium- Typically appears
- 70–120k mi
- Estimated repair
- $300 – $900
Oxygen Sensor / Heater Circuit Failure
medium- Typically appears
- 80–120k mi
- Estimated repair
- $150 – $400
Throttle Body / Idle Control Issues
medium- Typically appears
- 90–150k mi
- Estimated repair
- $200 – $500
Transfer Case Fluid Leaks and Shift Motor Failure
medium- Typically appears
- 80–140k mi
- Estimated repair
- $250 – $800
Maintenance schedule
- 1 Every 5,000 mi or 6 months Engine oil and filter change
The 3.7L V6 depends on clean oil to protect its valve train. Extended drain intervals accelerate sludge buildup, especially in stop-and-go driving.
- 2 Every 30,000 mi or sooner if the vehicle sees off-road or towing use Transfer case and differential fluid service
Neglected transfer case fluid is the primary cause of shift motor and chain wear on the Quadra-Trac system. Rear differential fluid should include additive replenishment on limited-slip units.
- 3 Every 30,000 mi or at each tire rotation Front lower ball joint inspection
These are a known wear item on the WK platform. Failed ball joints cause rapid tire wear and can lead to loss of steering control.
- 4 Every 2 years Brake fluid flush
Brake fluid absorbs moisture over time, lowering boiling point and promoting internal corrosion — especially important given Wisconsin's wet winters.
- 5 Every 30,000 mi Spark plugs replacement
The 3.7L uses standard copper-tip plugs. Worn plugs cause rough idle, poor fuel economy, and can mask camshaft timing issues.
- 6 Every 50,000 mi or 5 years Coolant flush
OAT coolant degrades and becomes acidic, attacking gaskets and the aluminum thermostat housing. Sub-zero Wisconsin temps make a fresh mix critical.
- 7 Every fall before road salt season Undercarriage rust inspection and treatment
Frame rails, rear suspension mounts, and brake lines are rust-prone on Midwest examples. Catching early surface rust before it reaches structural components preserves vehicle value and safety.
- 8 Every fall, or if battery is 3+ years old Battery load test
The TIPM is sensitive to low voltage — a weak battery can trigger cascading electrical faults. Cold-crank performance drops sharply below 0°F in Wisconsin winters.
Always defer to the manufacturer's service manual for warranty-mandated intervals.
Cost of ownership
Annual maintenance
$700 – $1,600
Fuel
At 17 MPG combined and ~15,000 miles/year, expect roughly $2,200–$2,700/year in fuel at current Wisconsin pump prices. The 3.7L requires regular 87-octane.
Insurance
Typically $1,000–$1,500/year for a 2007 model in Wisconsin at standard coverage levels. Varies by driver history and location.
The 2007 Grand Cherokee 3.7L is a moderately expensive vehicle to own. Fuel costs are the biggest line item given its poor efficiency. Maintenance stays reasonable if you stay on top of fluids and address ball joints before they become a tow-in. The wildcard is deferred maintenance and rust — a well-kept example costs little extra; a neglected one can surprise you with $2,000–$4,000 repair bills in a single year.
Seasonal care
Lake Geneva, WI Winter
- Load-test the battery every fall — the TIPM is voltage-sensitive and cold starts at Wisconsin lows stress even a good battery. Replace any battery older than 4 years proactively.
- Switch to a full-synthetic 5W-30 motor oil if not already running it. Cold-start oil flow protection below 0°F is noticeably better than conventional oil.
- Inspect and treat the undercarriage, frame rails, and brake lines with a rust inhibitor before first salt application. This is the single most important long-term preservation step for a Midwest Grand Cherokee.
- Check 4WD engagement before winter — confirm all transfer case modes (2H, 4H, 4L) engage cleanly while the vehicle is still warm. A sticky shift motor is easier to address in October than in a January snowstorm.
- Top off windshield washer fluid with a -20°F or lower rated solution. The reservoir is large but empties fast when using wipers against road spray.
- Inspect wiper blades and consider winter-style blades — the Grand Cherokee's large windshield benefits from blades that shed ice rather than clog.
Summer
- Check tire pressure at the start of summer — every 10°F rise in ambient temperature increases tire pressure by roughly 1 PSI. Overinflation causes center tread wear.
- Inspect the A/C system — 2007 Grand Cherokees are old enough that refrigerant leaks at O-rings and the condenser (exposed to road debris) are common. Have it checked before the heat arrives.
- Monitor coolant temperature during hot-weather towing or trail use. The 3.7L runs warmer than the V8 options and can approach the high end of normal under sustained load.
- Inspect brake pads and rotors — summer heat soak in stop-and-go traffic accelerates brake wear. Also a good time to check brake lines for rust damage from the prior winter.
Comparable vehicles
2007 Ford
Explorer
Same segment, similar price, available 4WD and V6/V8 options. More car-like on-road but less capable off-road. Generally better parts availability and lower electrical failure rates.
2007 GMC
Envoy
Direct mid-size SUV competitor with a reliable 4.2L inline-6. More reliable electrical system than the Grand Cherokee but discontinued after 2009, limiting future parts support.
2007 Toyota
4Runner
Stronger long-term reliability, better rust resistance, and competitive off-road ability. Holds value better and costs more upfront, but total ownership cost often favors the 4Runner by 100k+ miles.
2007 Dodge
Durango
Shares the Jeep platform and many drivetrain components. Seats up to 8, more cargo room, but identical TIPM and differential weaknesses. A good alternative if you need the extra seating.
If you're shopping for one
Red flags
- Any rust penetrating the frame rails or rear suspension crossmember — repair costs can exceed vehicle value.
- Transfer case that won't engage or grinds in 4WD — often means a rebuild or replacement ($800–$2,500).
- Multiple active U-codes (CAN bus/network faults) alongside erratic electrical behavior — strong indicator of a failing TIPM.
- Milky or sludgy oil on the dipstick — indicates either head gasket seepage or severely neglected oil changes.
- Evidence of off-road abuse (bent skid plates, damaged undercarriage, replaced bumpers) without service records to match.
- Coolant that looks rusty or brown — neglected cooling system maintenance accelerates thermostat housing and water pump failure.
What to inspect
- Lift the vehicle and inspect the full undercarriage — frame rails behind the rear axle, spare tire carrier mount, and brake lines are rust hotspots on Midwest WK Grand Cherokees.
- Test every 4WD mode (2H, 4H, 4L) during the test drive. Hesitation or grinding during transfer case shifts signals a worn shift motor or low/dirty fluid.
- Grab each front wheel at 9 and 3 o'clock and try to wiggle it — any play indicates worn lower ball joints, a common and safety-critical WK issue.
- Scan for stored and pending DTCs with an OBD-II reader before buying. TIPM-related codes (U-codes) and oxygen sensor codes are common on high-mileage examples.
- Check all power accessories — windows, mirrors, wipers, door locks — as TIPM failures cause intermittent failures across these systems.
- Look for oil leaks around the valve covers and oil pan. The 3.7L develops seeping gaskets with age, especially if oil changes were infrequent.