WK Grand Cherokee
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Contents |
General
The 2005 Jeep Grand Cherokee was a total redesign, both exterior and interior wise. Independent Front Suspension (IFS) was added.
Information from WKJeeps.com
• Inside and Outside, the Grand Cherokee Cuts a Trail No Other SUV Can Follow
• Innovative 4 X 4 Systems Continue to Set the Benchmark for Off-road Capability and On-road Refinement
• Available 5.7-Liter HEMI® V-8 Engine Takes Grand Cherokee Performance to a New Level
The all-new 2005 Jeep® Grand Cherokee raises the performance bar to a new level by offering improved capability and superior on-road ride and handling in a well-appointed package with a number of premium amenities.
With best-in-class tractive capability and best-in-class power, the newest generation Jeep Grand Cherokee is designed, engineered and built to master every imaginable day-to-day driving condition, whether on paved or unpaved surfaces.
Trim
Laredo
Limited
Overland
The Jeep Grand Cherokee Overland is the top of the line model for the WK series. It has most features standard except for engine block heater and rear DVD.
Standard Features (Wkjeeps.com)
12V AUXILIARY POWER OUTLET (JKP)
140 MPH PRIMARY SPEEDOMETER (JCE)
160 AMP ALTERNATOR (BAB)
17X7.5 ALUMINUM PLATINUM CLAD WHEELS (WGC)
20.5 GALLON FUEL TANK (NFP)
200MM FRONT AXLE (DJA)
213MM REAR AXLE (DRS)
276 WATT AMPLIFIER (RD7)
3.73 AXLE RATIO (DME)
4X4 BADGE (MWT)
5.7L BADGE (MTL)
50 STATE EMISSIONS (NAS)
6 BOSTON ACOUSTICS SPEAKERS (RC6)
6CD/FULL MAP GPS DISPLAY NAV RADIO (REC)
7 AND 4 PIN WIRING HARNESS (XF2)
730 AMP MAINTENANCE FREE BATTERY (BCN)
ADVANCED MULTISTAGE FRONT AIR BAGS** (CG3)
AIR COND ATC W/DUAL ZONE CONTROL (HAF)
ANTI-LOCK 4-WHEEL DISC BRAKES (BRY)
AUTOMATIC HEADLAMPS (LMG)
BLACK WINDSHIELD MOLDINGS (MHA)
BODY COLOR FASCIAS W/PLATINUM INSERT (MCY)
BODY COLOR SILL MOLDING (K70)
BRIGHT BELT MOLDINGS (MMS)
BRIGHT GRILLE (MFZ)
BRIGHT SIDE ROOF RAILS (MW1)
BRIGHT TOW HOOKS (XFB)
CHMSL LAMP (LPS)
CARGO COMPARTMENT CARPET (CKN)
CARGO COMPARTMENT COVER (CSC)
CARGO COMPARTMENT LAMP (LDB)
CARGO NET (CKR)
CARGO TIE DOWN LOOPS (CKT)
CARGO TRIM PANEL W/STORAGE NET (CLH)
CENTER REAR 3-POINT SEAT BELT (CG6)
CHILD SEAT ANCHOR SYSTEM-LATCH READY (CGU)
CHILD SEAT UPPER TETHER ANCHORAGES (CF4)
CLOTH COVERED HEADLINER (CHB)
COURTESY LAMPS (LBB)
DASH LINER INSULATION (HGB)
DEEP TINT SUNSCREEN GLASS (GEG)
DELUXE INSULATION GROUP (HGD)
DUAL NOTE ELECTRIC HORNS (JJB)
ENGINE - 5.7L HEMI MULTI DISPLACEMENT ENGINE (EZB)
ELEC LTD SLIP DIFFERENTIAL FRT AXLE (DSG)
ELEC LTD SLIP DIFFERENTIAL RR AXLE (DSF)
ELECTRONIC STABILITY PROGRAM (BNB)
EMERGENCY BRAKE ASSIST (BGE)
ENHANCED ACCIDENT RESPONSE SYSTEM (LSE)
FEDERAL TIER 2, BIN 8A EMISSIONS (NBE)
FIXED LONG MAST ANTENNA (RDD)
FLIPPER LIFTGATE GLASS (GEP)
FLOOR CARPET (CKD)
FLOOR TUNNEL INSULATION (HGF)
FOG LAMPS (LNJ)
FRONT & REAR FLOOR MATS (CLE)
FRONT DOOR TINTED GLASS (GCB)
FRONT LICENSE PLATE BRACKET (MDA)
FULL LENGTH FLOOR CONSOLE (CUF)
FULL SIZE MATCHING WHL SPARE TIRE (TBW)
GVW RATING - 6150# (Z6D)
GLOVE BOX LAMP (LBC)
HALOGEN HEADLAMPS (LMB)
HEATED FRONT SEATS (JPM)
HITCH - CLASS IV RECEIVER (XFH)
HOOD INSULATION (HGA)
HYDRAULIC ENGINE COOLING (NMH)
ILLUMINATED ENTRY (LAC)
INSTRUMENT CLUSTER W/TACH (JAY)
INSTRUMENT PANEL WITH "VAVONA BURL" TRIM ACCENTS (JAP)
JEEP BADGE (MVC)
LEATHER TRIM SEATS W/PREFERRED SUEDE (*XL)
LOCK-UP TORQUE CONVERTER (DHA)
LOCKING GLOVE BOX (JKA)
LOW BACK BUCKET SEATS (CAC)
LUXURY DOOR TRIM PANEL WITH "VAVONNA BURL" TRIM (CTC)
MANUAL DRIVER & PASS LUMBAR ADJUST (CDU)
MONOTONE PAINT (APA)
NORMAL DUTY SUSPENSION (SDA)
OCCUPANT CLASSIFICATION SYSTEM (XCA)
OVERHEAD CONSOLE (CUN)
OVERLAND BADGE (MZM)
P245/65R17 OWL ALL TERRAIN TIRES (TCD)
PARKSENSE REAR BACK-UP SYSTEM (XAA)
PASSENGER ASSIST HANDLES (CSR)
PLATINUM BODYSIDE MOLDING (MTG)
POWER ACCESSORY DELAY (JKY)
POWER ADJUSTABLE PEDALS W/MEMORY (XAM)
POWER FOLDING MULTI-FUNCTION MIRRORS (GUQ)
POWER LOCKS (JPB)
POWER RACK AND PINION STEERING (SBA)
POWER STEERING COOLER (NHF)
POWER SUNROOF (GWA)
PROTECTIVE COATING AND REMOVER (XPF)
PWR 8-WAY DRVR MEM 4-WAY PASS SEATS (JPK)
PWR FRONT WINDOWS, 1-TOUCH,UP & DOWN (JP3)
QUADRA DRIVE BADGE (MZB)
QUADRA-DRIVE 4WD SYSTEM (AWB)
QUADRA-TRAC II FULL-TIME,ACTIVE 4WD (DHX)
RADIO/DRIVER SEAT/MIRRORS MEMORY (LEW)
RAIN SENSITIVE WINDSHIELD WIPERS (JHC)
REAR 60/40 FOLDING SEAT (CFN)
REAR COURTESY/READING LAMPS (LCE)
REAR POWER OUTLET (JJM)
REAR VIEW AUTO DIM MIRROR (GNK)
REAR WINDOW DEFROSTER (GFA)
REAR WINDOW WIPER/WASHER (JHB)
REMOTE KEYLESS ENTRY (GXM)
REVERSIBLE/WATERPROOF CARGO STORAGE (CL5)
SATIN LICENSE PLATE BROW (MNL)
SECURITY ALARM (LSA)
SENTRY KEY THEFT DETERRENT SYSTEM (GXX)
SIDE WINDOW CURTAIN FRT/RR AIR BAGS (CJ2)
SIRIUS SATELLITE RADIO (RSA)
SIRIUS SATELLITE RADIO, 1-YEAR SERVICE (X97)
SMARTBEAM HEADLAMPS (LMS)
SPEED CONTROL (NHM)
STEERING WHEEL MOUNTED AUDIO CTRLS (RDZ)
SUN VISORS W/ILLUM VANITY MIRRORS (GNC)
TRANSMISSION - 5-SPD AUTOMATIC 5-45RFE (DGQ)
TILT STEERING COLUMN (SUA)
TINTED WINDSHIELD GLASS (GBB)
TIRE PRESSURE MONITORING DISPLAY (XGM)
TRAIL RATED BADGE (MT2)
TRAILER TOW GROUP IV (AHX)
TRAVELER/MINI TRIP COMPUTER (LET)
UCONNECT HANDS-FREE COMMUNICATION (RSP)
UNIVERSAL GARAGE DOOR OPENER (XGD)
VEHICLE INFORMATION CENTER (LAZ)
WARNING CHIME (LAG)
WOOD/LEATHER WRAPPED STEERING WHEEL (SCW)
The Overland has seen some changes since it's introduction to the Grand Cherokee series in 2006.
2006: Platinum Covered Power Folding Mirrors were standard.
2007: Body Colored Mirrors are introduced. Power Folding Mirrors were discontinued at the plant after December 2007. Therefore some 2007 Overland's have the Power Folding Mirrors and some do not. Chrome Tow Hooks are TSB'ed because they are prone to discoloration and rust. Park View is introduced. Park view is a rear view camera that is engaged when the WK is placed in reverse.
2008: Platinum Exterior Trim is replaced by regular chrome. Body Colored Door handles are replaced by chrome handles. MyGig Navigation is introduced. Hill Descent Control is introduced. HID Headlamps are introduced. As for all WK's the front fascia is refreshend for a more angled look. Medium Slate Gray and Medium Khaki interior colors are replaced by Light Graystone and Saddle Brown.
SRT8
The SRT8 Grand Cherokee features the 6.1L V-8 engine, powerful four-piston Brembo brakes, all-wheel drive, and 20" wheels. The SRT8 will launch to 60mph in less than five seconds.
Engines and Transmissions
3.7L PowerTech V6:
The 3.7-liter V-6 engine provides the 2005 Jeep Grand Cherokee with an efficient, durable and smooth base engine. It produces 210 hp (157 kW) @5200 rpm and 235 lb-ft (319 N•m) @4000 rpm. The 3.7-liter SOHC V-6 will replace and deliver even more peak power than the previous 4.0-liter I-6 in the Jeep Grand Cherokee lineup. The engine was first introduced in the Jeep Liberty and has been continuously refined to provide smooth V-6 power with optimal economy.
Significant changes in the 3.7-liter include a revised cam profile and new valve lash adjusters. These changes improve the engine smoothness at idle. To ensure quiet operation, a new thick-wall composite manifold is new for 2005, as are structural improvements to the air box and resonator. The cylinder head has been redesigned, increasing the compression ratio to 9.7:1. The 3.7-liter now uses plastic cylinder head covers.
4.7L PowerTech V8 (2005-2007):
The 4.7-liter V-8 was updated for the 2005 model year and was the mid-range engine in 2005-2007 model Grand Cherokees. The engine produces 235 hp (172 kW) @ 4700 rpm and 290 lb-ft (393 N•m) of torque @ 3700. Dual knock sensors have been added for 2005 and enable improved engine calibration for both fuel economy and power output. The updated engine has improved NVH characteristics, realized through the use of composite valve covers, structural improvements to the air box and resonator and improved dampening of the heat shields. An EGR valve is now used to reduce NOX emissions while improving fuel economy by replacing some of the incoming fuel/air mixture with inert exhaust gas.
The Dana corporation supplied the new reduced-tension piston rings and the rod bearings. Dana also supplied the new cylinder-head, cam-cover module. The new thermoset plastic cylinder-head cover module was developed in just 12 months and replaces a magnesium component. Due to innovative manufacturing processes, Dana was able to reduce the overall cost of the module, while incrementally improving noise, vibration, and harshness, or NVH.
The vinyl ester glass-reinforced thermoset plastic modules, which are unique to the left- and right-side cylinders, include the cover, gasket, and fasteners. These components are produced at Dana's Composite Sealing Center in Paris, Tenn. With this new sealing system, Dana developed a custom compound material for gaskets and grommets. Dana also provided prototyping for the gasket and isolator molds to ensure the design met all of Jeep's specifications. The system relies on a self-retaining, "press-in-place" gasket to improve function and quality consistency. This innovation eliminates the time- consuming and costly steps of precisely aligning and attaching the gasket to the valve cover with adhesive.
Dana engineers worked closely with DaimlerChrysler's technical staff to provide 3-D solid models to fit tight, under-the-hood requirements. Dana also provided material development and component validation to ensure robust system performance. This collaborative effort eliminated the prototype step for the cover housing, which in turn reduced development time and cost by allowing the component to move directly from design to production.
4.7 Liter Powertech (2008-UP):
2008 models of the Grand Cherokee and Commander will feature a new updated 4.7-liter V-8. The new engine offers better fuel economy, power, and torque than the previous 4.7-liter engine, while increasing refinement, thanks to dual spark plugs per cylinder, increased compression, better cylinder-head port flow, and a new combustion system. The result is 305 horsepower, a 30 percent increase; and 334 lb.-ft. of torque, a 10 percent increase. The engine is still capable of operating on E85 ethanol fuel. Smoother and quieter running came from revisions to the induction system, a lightweight piston/rod assembly, reduced accessory drive noise through lower accessory drive speed, and a new valve-lash adjuster system. The new 4.7-liter V-8 is also equipped with Electronic Throttle Control.
5.7L Hemi V8:
The 5.7-Liter V-8 HEMI engine that powers the 2005 Jeep Grand Cherokee uses aluminum cylinder heads with hemispherical combustion chambers, creating outstanding airflow leading to high power and torque. The engine produces 330 hp (246 kW) @5000 rpm and 375 lb-ft (502 N•m) @4000 rpm. Dual ignition (two spark plugs per cylinder) increases peak power and torque, reduces exhaust emissions, increases fuel economy and provides a smooth idle. The combustion system has been refined and the engine uses direct-mount accessories for quieter operation.
“Two legends combine with the introduction of the modern HEMI V-8 in the 2005 Jeep Grand Cherokee,” said Eric Ridenour, Executive Vice President—Product Development. “The HEMI is the most powerful engine ever offered in a Grand Cherokee and easily gives the vehicle best-in-class power.”
Fuel economy has also been improved, but not at the expense of HEMI performance. Chrysler Group has developed the Multi-Displacement System (MDS) that deactivates four cylinders when the V-8 is not needed. The 2005 Grand Cherokee is the first SUV to offer fuel-conserving MDS.
The Chrysler Group MDS seamlessly alternates between smooth and economic four-cylinder mode when less power is needed and V-8 mode when more power from the 5.7-liter HEMI engine is in demand. This optimizes fuel economy when V-8 power is not needed without sacrificing vehicle performance or towing capability.
“The MDS was part of the engine’s original design,” said Bob Lee, Vice President—Powertrain Product Team. “This results in a cylinder deactivation system that is elegantly simple and completely integrated into the engine design. The benefits are fewer parts, maximum reliability and lower cost.”
Some of the significant technologies enabling the MDS are the speed of electronic controls, the sophistication of the algorithms controlling the systems and the use of Electronic Throttle Control. The HEMI is able to transition from eight cylinders to four in 40 milliseconds.
This engine and MDS has completed over 6.5 million customer-equivalent miles through Chrysler Group’s development and durability testing. It is covered by the seven-year/70,000-mile Limited Powertrain warranty.
The HEMI engine that powers the 2005 Jeep Grand Cherokee uses aluminum cylinder heads with hemispherical combustion chambers, creating outstanding airflow leading to high power and torque. Dual ignition (two spark plugs per cylinder) increases peak power and torque, reduces exhaust emissions, increases fuel economy and provides a smooth idle. The combustion system has been refined and the engine uses direct-mount accessories for quieter operation.
6.1L Hemi V8 (SRT-8):
The 6.1L-liter V8 HEMI made its Jeep debut in the 2006 Grand Cherokee SRT8 which went on sale in January of 2006. When SRT powertrain engineers set out to develop a more powerful HEMI they were mindful of the engine's heritage, which led to adopting traditional HEMI engine cues including an orange-painted cylinder block and black valve covers. SRT engineers who developed the 6.1L engine achieved more horsepower by adding more cubic inches, increasing the compression ratio, and redesigning the cylinder head, intake and exhaust systems for better flow and increased engine speed.
For more displacement, SRT engineers bored out the diameter of the cylinders in the HEMI by 3.5 millimeters each in order to increase the total displacement to 6.1 liters from 5.7 liters. Compression ratio was also increased to 10.3:1 from 9.6:1, increasing engine efficiency and power. Cylinders are honed with torque plates to ensure a truer bore, to reduce friction and increase power.
Engine breathing was increased with new higher-flow cylinder heads, a specially designed intake manifold, and exhaust headers with individual tubes encased in a stainless steel shell, all unique to the 6.1-liter HEMI engine. Larger-diameter valves and reshaped ports in the heads allow for maximized air flow. The intake manifold was designed with larger diameter and shorter runners for higher-speed tuning. Exhaust runners allow increased gas flow while maintaining fast catalyst light-off, while adding 12 horsepower over the 5.7-liter engine’s cast manifolds. Exhaust is routed through a large diameter (2.75-inch vs. 2.5-inch) exhaust system with 3.5-inch chrome tips.
To further increase horsepower, performance-oriented camshaft profiles were developed to allow more air in and out of the cylinders, as well as manage a higher engine speed. A billet steel, high-strength camshaft features more overlap and lift for better performance. Silent chain, 5-bearings. Bi-metal material except number 3 Babbit. Deep-fillet rolled journals for improved fatigue life, press fit damper to minimize torsional vibration.
SRT engineers increased the HEMI's peak power output engine speed by nearly 20 percent to 6,000 revolutions per minute (rpm) from 5,000 rpm. Intake and exhaust valve stems are hollow, and the exhaust valve stems are filled with sodium to help dissipate heat more efficiently.
The high-performance SRT 6.1-liter HEMI is strengthened with redesigned components, including a reinforced engine block, forged micro-alloy steel crankshaft with retuned damper, high-strength powdered metal connecting rods and floating-pin pistons. The pistons are cooled by oil squirters, aimed at the underside of each piston to aid piston cooling for engine durability. A special oil pump pressure relief valve is added to accommodate the squirter oil flow. The oil pan and windage tray are modified to manage oil return to the pan sump at high engine speeds and improve power.
3.0L OM642 V6 (European Diesel):
The 3.0-liter V-6 “common rail” direct injection engine is a 72°, overhead valve design. The engine utilize a cast aluminum cylinder block molded around cast iron piston sleeves. The engine has aluminum cross flow cylinder heads, four valves per cylinder, central injectors and dual overhead camshafts. The 3.0L is turbocharged, intercooled, and also equipped with a EGR cooler.
Additional features are:
Finger Follower Actuated Valves with Hydraulic Adjusters Counter Rotating Balance Shaft Oil Jet Cooled Pistons Swirl Intake Ports Chain driven D.O.H.C. per bank of cylinders, with 4 valves per cylinder
4x4 Systems
Quadra-Trac I
The Quadra-Trac I system utilizes a single-speed full-time four-wheel-drive transfer case that provides superior traction on a variety of roads without the need for any driver involvement.
Quadra-Trac II
The Quadra-Trac II system utilizes an electronically shifted two-speed full-time four-wheel-driver transfer case. When wheel slip occurs, the system instantly transfers torque to the wheel with traction in order to maintain control over a variety of surfaces.
Quadra-Drive II
The Quadra-Drive II system is the ultimate combination of on-road performance and off-road performance. It utilizes Electronic Limited Slip Differentials (ELSD) in both the front and rear differentials. The ELSDs can instantly lock the differentials, providing power to all four wheels, or allow the differentials to slip. The ELSDs replace the Vari-Lok differentials offered in the previous generation WJ Grand Cherokee.
