computer swap
my 97 grand cherokee charges at the very minuim,13.7v and no higher.have had 3 altinators different batterys,installed better wires and grounds, but it seems to do no good,some times when I reconnect the battery,s it will charge to 14.0v brefly but drops down again. The charging will not keep up the battery voltage when using headlights and wipers etc. Because the voltage regulator is in the PCM, I assume it needs replaced. question;to swap it out do I need the dealer to program the replacement. thanks for any help

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Amongst other items to check are bar mounted electric winches. These components may not be used for extended periods and when they're needed you may find they have seized up. If the winch has been submerged in water it is advisable to strip it and grease it accordingly. A quick operation of it after a crossing may prove it still works, but you may find out when it seizes that you washed all the grease out 6 months ago! A water crossing is something that should not be taken too lightly as it has the potential to do expensive engine and drive-train damage. However, with the right 4x4 preparation and post crossing maintenance, you can enjoy some of the most challenging 4WDriving around.