Check fuses and relays if day time running lights then rear off normal if regular lights and rear out not normal check power and wiring harness from switch to lights
Turn on what lights?
head lights. if yes, 1 click or 2.?
what rear lights there are many
tail/park
brake
backup?
car drives prefectly, (shoe drops)
all else works?
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: 2002 Jeep Grand Cherokee Lardo misfiring
You say you changed the cam sensor. A1391 code is a crank sensor on the top of the trans. bell housing.
SOURCE: 2002 wj jeep grand cherokee p1756
The governor pressure sensor is the most likley cause however an inspection of fluid or debris in trans pan would be a good idea to make sure there's nothing excessive in it. Attached is a list of possible causes however the senor would be the most common.
POSSIBLE CAUSES
SOURCE: How do you program a 2002 Jeep Grand Cherokee FOB?
if you have an original working fob and your owner's manual,it will explain procedure,otherwise will have to go to dealer to be programmed
SOURCE: REAR BRAKE SHOE ASSEMBLY DIAGRAM
You can go to autozone.com and register for full free online repair manual that has the diagrams you need and everything else you could want.
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