2005-2010 Jeep Grand Cherokee (WK) Service & Repair Manual

GROUP TAB LOCATOR Introduction 0 Lubrication & Maintenance 2 Suspension 3 Differential & Driveline 5 Brakes 7 Cooling 8A Audio/Video 8B Chime/Buzzer 8E Electronic Control Modules 8F Engine Systems 8G Heated Systems 8H Horn 8I Ignition Control 8J Instrument Cluster 8L Lamps 8M Message Systems 8N Power Systems 8O Restraints 8P Speed Control 8Q Vehicle Theft Security 8R Wipers/Washers 8T Navigation/Telecommunication 8W Wiring 9 Engine 11 Exhaust System 13 Frame & Bumpers 14 Fuel System 19 Steering 21 Transmission and Transfer Case 22 Tires/Wheels 23 Body 24 Heating & Air Conditioning 25 Emissions Control 4.0L/4.7L Component and System Index DTC Index Service Manual Comment Forms (Rear of Manual)

INTRODUCTION TABLE OF CONTENTS page page VEHICLE IDENTIFICATION NUMBER DESCRIPTION .......................... 1 VEHICLE EMISSION CONTROL INFORMATION (VECI) DESCRIPTION .......................... 2 VEHICLE CERTIFICATION LABEL DESCRIPTION .......................... 3 FASTENER IDENTIFICATION DESCRIPTION .......................... 4 FASTENER USAGE DESCRIPTION FASTENER USAGE ..................... 6 THREADED HOLE REPAIR DESCRIPTION THREADED HOLE REPAIR ............... 6 INTERNATIONAL SYMBOLS DESCRIPTION - INTERNATIONAL SYMBOLS ...6 METRIC SYSTEM DESCRIPTION .......................... 7 TORQUE REFERENCES DESCRIPTION .......................... 9 VEHICLE IDENTIFICATION NUMBER DESCRIPTION The Vehicle Identification Number (VIN) plate is attached to the top left side of the instrument panel. The VIN contains 17 characters that provide data con- cerning the vehicle. Refer to the decoding chart to determine the identification of a vehicle. To protect the consumer from theft and possible fraud the manufacturer is required to include a Check Digit at the ninth position of the Vehicle Identification Num- ber. The check digit is used by the manufacturer and government agencies to verify the authenticity of the vehicle and official documentation. The formula to use the check digit is not released to the general public. WK INTRODUCTION 1

VEHICLE IDENTIFICATION NUMBER DECODING CHART POSITION INTERPRETATION CODE = DESCRIPTION 1 Country of Origin 1 = Manufactured By DaimlerChrysler Corporation 2 Make J = Jeep 3 Vehicle Type 4 = MPV Less Side Air Bags 8 = MPV With Side Air Bags 4 Gross Vehicle Weight Rating G = 5001-6000 lbs. 5 Vehicle Line (WK) S = Grand Cherokee 4X2 R = Grand Cherokee 4X4 5 Vehicle Line (WH) C = Grand Cherokee 4X4 (LHD) D = Grand Cherokee 4X4 (RHD) 6 Series 4 = Grand Cherokee LAREDO 5 = Grand Cherokee LIMITED E = 5 Speed Auto 7 Body Style 8 = Sport Utility 4 Door 8 Engine K = 3.7K 6 cyl. MPI Gasoline N = 4.7L 8 cyl. MPI Gasoline 2 = 5.7L 8 cyl. HEMI Multiple Displacement Gasoline M = 3.0L 6 cyl. Turbo Diesel 9 Check Digit 0 through 9 or X 10 Model Year 5=2005 11 Assembly Plant C = Jefferson North Assembly Y = Chrysler Steyer Assembly 12 thru 17 Vehicle Build Sequence VEHICLE EMISSION CONTROL INFORMATION (VECI) DESCRIPTION All vehicles are equipped with a combined vehicle emission control information (VECI) label(s). The label is located in the engine compartment on the vehicle hood. Two labels are used for vehicles built for sale in the country of Canada. 2 INTRODUCTION WK

The VECI label(s) contain the following: • Engine family and displacement • Evaporative family • Emission control system schematic • Certification application • Spark plug and gap The label also contains an engine vacuum schematic. There are unique labels for vehicles built for sale in the state of California and the country of Canada. Canadian labels are written in both the English and French languages. These labels are permanently attached and cannot be removed without defacing information and destroying label. VEHICLE CERTIFICATION LABEL DESCRIPTION A vehicle certification label is attached to every DaimlerChrysler Corporation vehicle. The label certifies that the vehicle conforms to all applicable Federal Motor Vehicle Standards. The label also lists: • Month and year of vehicle manufacture. • Gross Vehicle Weight Rating (GVWR). The gross front and rear axle weight ratings (GAWR’s) are based on a minimum rim size and maximum cold tire inflation pressure. • Vehicle Identification Number (VIN). • Type of vehicle. • Type of rear wheels. • Bar code. • Month, Day and Hour (MDH) of final assembly. • Paint and Trim codes. • Country of origin. The label is located on the driver-side door shut-face. WK INTRODUCTION 3

FASTENER IDENTIFICATION DESCRIPTION The SAE bolt strength grades range from grade 2 to grade 8. The higher the grade number, the greater the bolt strength. Identification is determined by the line marks on the top of each bolt head. The actual bolt strength grade corresponds to the number of line marks plus 2. The most commonly used metric bolt strength classes are 9.8 and 10.9. The metric strength class identification number is imprinted on the head of the bolt. The higher the class number, the greater the bolt strength. Some metric nuts are imprinted with a single-digit strength class on the nut face. Refer to the Fastener Identification and Fastener Strength Charts. Bolt Markings and Torques - Metric Bolt Markings 8.8/8.9 10.9 12.9 Bolt Dia. N·m Ft. Lbs. N·m Ft. Lbs. N·m Ft. Lbs. 6 12 105* 14 120* 16 12 8 25 250* 32 23 38 28 10 54 40 60 45 74 55 12 95 70 108 80 135 100 14 155 115 175 130 216 160 16 243 180 324 210 324 240 * Inch Lbs. Bolt Markings and Torques - U. S. Customary Bolt Markings Grade 5 Grade 8 Bolt Dia. N·m Ft. Lbs N·m Ft. Lbs 1/4 - 20 10 95* 14 125* 1/4 - 28 10 95* 17 150* 5/16 - 18 22 200* 30 270* 5/16 - 24 26 240* 33 300* 3/8 - 16 40 30 55 40 3/8 - 24 47 35 60 45 7/16 - 14 68 50 88 65 7/16 - 20 74 55 95 70 1/2 - 13 101 75 135 100 1/2 -20 115 85 150 110 9/16 - 12 135 105 182 135 9/16 - 18 155 115 202 150 5/8 - 11 202 150 263 195 5/8 - 18 215 160 284 210 3/4 - 10 230 170 297 220 3/4 - 16 236 175 304 225 7/8 - 14 405 300 540 400 * Inch Lbs. 4 INTRODUCTION WK

WK INTRODUCTION 5

FASTENER USAGE DESCRIPTION FASTENER USAGE WARNING: Use of an incorrect fastener may result in component damage or personal injury. Fasteners and torque specifications references in this Service Manual are identified in metric and SAE format. During any maintenance or repair procedures, it is important to salvage all fasteners (nuts, bolts, etc.) for reassem- bly. If the fastener is not salvageable, a fastener of equivalent specification must be used. THREADED HOLE REPAIR DESCRIPTION THREADED HOLE REPAIR Most stripped threaded holes can be repaired using a HelicoilT. Follow the vehicle or HelicoilT recommendations for application and repair procedures. INTERNATIONAL SYMBOLS DESCRIPTION - INTERNATIONAL SYMBOLS The graphic symbols illustrated in the following International Control and Display Symbols Chart are used to identify various instrument controls. The symbols correspond to the controls and displays that are located on the instrument panel. 6 INTRODUCTION WK

METRIC SYSTEM DESCRIPTION The metric system is based on quantities of one, ten, one hundred, one thousand and one million. The following chart will assist in converting metric units to equivalent English and SAE units, or vise versa. CONVERSION FORMULAS AND EQUIVALENT VALUES MULTIPLY BY TO GET MULTIPLY BY TO GET in-lbs x 0.11298 = Newton Meters (N·m) N·m x 8.851 = in-lbs ft-lbs x 1.3558 = Newton Meters (N·m) N·m x 0.7376 = ft-lbs Inches Hg (60° F) x 3.377 = Kilopascals (kPa) kPa x 0.2961 = Inches Hg psi x 6.895 = Kilopascals (kPa) kPa x 0.145 = psi Inches x 25.4 = Millimeters (mm) mm x 0.03937 = Inches Feet x 0.3048 = Meters (M) M x 3.281 = Feet Yards x 0.9144 = Meters M x 1.0936 = Yards mph x 1.6093 = Kilometers/Hr. (Km/h) Km/h x 0.6214 = mph Feet/Sec x 0.3048 = Meters/Sec (M/S) M/S x 3.281 = Feet/Sec mph x 0.4470 = Meters/Sec (M/S) M/S x 2.237 = mph Kilometers/Hr. (Km/h) x 0.27778 = Meters/Sec (M/S) M/S x 3.600 Kilometers/Hr. (Km/h) COMMON METRIC EQUIVALENTS 1 inch = 25 Millimeters 1 Cubic Inch = 16 Cubic Centimeters 1 Foot = 0.3 Meter 1 Cubic Foot = 0.03 Cubic Meter 1 Yard = 0.9 Meter 1 Cubic Yard = 0.8 Cubic Meter 1 Mile = 1.6 Kilometers Refer to the Metric Conversion Chart to convert torque values listed in metric Newton- meters (N·m). Also, use the chart to convert between millimeters (mm) and inches (in.). WK INTRODUCTION 7

8 INTRODUCTION WK

TORQUE REFERENCES DESCRIPTION Individual Torque Charts appear within many or the Groups. Refer to the Standard Torque Specifications Chart for torque references not listed in the individual torque charts. WK INTRODUCTION 9

2005-2010 Jeep Grand Cherokee (WK) Service & Repair Manual

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