The speedometer on a 2004 Grand Charokee gets its signal via the PCI data bus from the ABS control module. Both rear wheel speed sensors are used for the speed signal.
SOURCE: 2002 jeep cherokee laredo
the only problem that vehicle has is with cooling fans is relay/module or electrical harness to module that burns up located behind and under right front headlamp assy must remove headlamp to access relay/module that is what powers up fan motor module assy.
SOURCE: 2001 Jeep Grand Cherokee Laredo....power
I have a 2000 Jeep Grand Cherokee the power windows,power seat , door would not lock , and the inside lights would stay one ..i thought it was a fuse problem but no fuses for that ... in the rubber boot between the door and frame ..the was the ground wire was split ... put a **** connector on it everything works great now ....
SOURCE: Head Bolt Torque for a 2000 Grand Cherokee Laredo 4.0L
the torque is a 4 step process
1 torque all bolts to 22 ft/lbs
2 torque all bolts to 45 ft/lbs
3 recheck all bolts to 45 ft/lbs
4 torque bolts 1 thru 10 to 110 ft/lbs
bolt 11 to 100 ft/lbs
bolts 12 thru 14 to 110 ft/lbs
bolt #1 is the fourth bolt from the front on the passenger side....#2 is the fourth bolt on the drivers side then you continue in a clockwise order
SOURCE: change a serpentine belt on 04 jeep grand cherokee laredo
Check this link & scroll down to your engine. Click on picture to expand.
http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528004328a
SOURCE: 1994 jeep grand cherokee - speedometer does not work
On a 94 jeep the speedo is electronic, you need to check the speed sensor on the transfer case, they are only about 20 bucks and very easy to swap out, if that does not do it then it becomes more involved because it is either the cluster (dash) or the BCM "(body control module) which controls the speedo in the dash as well as a host of other things like cruise control security system etc... you may need to take it to a dealer and have them check to see that the speed sensor is sending the right info and then you can narrow it down to either the cluster or something in between.
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