What is the red lightning sign my dash mean i have a 2005 jeep grand cherokee unlimited 4wd 5.7

X2 SCAN IT, NOW. red lightning sign in the cluster you mean, dash is big area. ?????

no photo and we must guess.
and you lost he operator guide, already. sure.
and it tells you all that.........
2005 WK jeep
the oper,.guide is still free.
http://www.jeep.com/en/owners/manuals/

get it before it goes byebye, and keep it .


pdf page 170 that lightning bolt, ?????
that is
Electronic Throttle Control (ETC) Warning Light -
If Equipped (5.7L Engine Only)

try as i might i see only one Lightning bolt.
so?>???
what to do is reset the DTC (scan tool)
then see if it comes back if yes, its REAL
then scan it and see all DTCs thrown, and read the FSM for why.
the lost page:? LIGHTNING BOLT:
This light informs you of a problem with the
Electronic Throttle Control system. If a problem
is detected the light will come on while the
engine is running. Cycle the ignition key when
the vehicle has completely stopped and the gear selector
is placed in the P (Park) position. The light should turn
off. If the light remains lit with the engine running your
vehicle will usually be drivable, however, see your dealer
for service as soon as possible. If the light is flashing
when the engine is running, immediate service is required
and you may experience reduced performance, an
elevated/rough idle or engine stall and your vehicle may
require towing. The light will come on when the ignition
is first turned on and remain on briefly as a bulb check.
If the light does not come on during starting, have the
system checked by an authorized dealer.

You need to take it to a shop and have it scanned so you know the t-case fault codes (transfer case)