The rear wiper motor on my 99 hardtop had been going bad since I purchased my TJ and I finally decided to replace it. The part number is 55155322AB, but when I went to look for a replacement I saw that Mopar had discontinued that part as well as the 55155322AC revision.
Rockauto offers a $154 rebuild service, but I was a little skeptical of both the price and the quality.
I realized that the rear wiper motor off the 95 Chevy Blazer is essentially the same part, just with a different electrical connector and different mounting hardware. Cardone offers a rebuilt version of that motor, part number 40-1005, and a new version, part number 85-1005 which is available on Amazon for about $45.
I purchased the rebuilt motor first and was really unimpressed with the quality of the rebuild, so I opted to go for the new version off Amazon and was impressed with how quiet and fast it it was vs the original failing motor.
In order to mount the new motor, you need to remove the two metal mounts off the original you're replacing, both are held on with a single torx screw.
The mount show to the right of the motor is used for the two right screws on the plastic cover that sits over top of the motor.
The mount on the back slips over the rubber grommet on the end of the motor, and is what you use to screw the motor and snug it up against the glass.
You're going to remove the included mounting hardware on the new motor you purchased, as well as remove the big plastic box the wiring is plugged into, and then reattach the two mount pieces you removed from your original Mopar motor.
The new replacement motor mounts onto the hardtop identically to the original.
The electrical on the replacement motor has two additional wires that were not present on the Mopar motor. I cut the electrical connection off the original motor and spliced it onto the wiring for the new one. The splicing colors are as follows:
Blue -> Blue
White -> White
Yellow -> Red + Yellow
There's a fifth gray wire that isn't used, so I cut it and taped it off with electrical tape. Once you plug the harness back in, your rear wiper switch up front should operate the motor exactly like it did with the original.
Because the spline on the replacement motor is smaller than the original Mopar one, you'll either need to modify your original wiper arm or purchase a new one that fits. I opted to purchase a Dorman 42550 off Amazon for about $25, and I removed the attached washer hose since it's not needed. I also attached a new 14" wiper blade, the Rain-X 5079272-2.
The spline on the new motor also sits a bit further away from the glass than on the original motor, so I bought a couple of rubber washers from Lowes for 0.50 and used those to snug up the plastic locking nut on the outside of the glass.
All in for the new motor, new wiper arm, and new wiper blade, was just over $80, still only about half of just the rebuild service through Rockauto. This only works if you have the original mounting hardware you can take off your old motor, but I was pretty happy with the final result and glad to have a quiet and operational wiper back.
Rockauto offers a $154 rebuild service, but I was a little skeptical of both the price and the quality.
I realized that the rear wiper motor off the 95 Chevy Blazer is essentially the same part, just with a different electrical connector and different mounting hardware. Cardone offers a rebuilt version of that motor, part number 40-1005, and a new version, part number 85-1005 which is available on Amazon for about $45.
I purchased the rebuilt motor first and was really unimpressed with the quality of the rebuild, so I opted to go for the new version off Amazon and was impressed with how quiet and fast it it was vs the original failing motor.
In order to mount the new motor, you need to remove the two metal mounts off the original you're replacing, both are held on with a single torx screw.
The mount show to the right of the motor is used for the two right screws on the plastic cover that sits over top of the motor.
The mount on the back slips over the rubber grommet on the end of the motor, and is what you use to screw the motor and snug it up against the glass.
You're going to remove the included mounting hardware on the new motor you purchased, as well as remove the big plastic box the wiring is plugged into, and then reattach the two mount pieces you removed from your original Mopar motor.
The new replacement motor mounts onto the hardtop identically to the original.
The electrical on the replacement motor has two additional wires that were not present on the Mopar motor. I cut the electrical connection off the original motor and spliced it onto the wiring for the new one. The splicing colors are as follows:
Blue -> Blue
White -> White
Yellow -> Red + Yellow
There's a fifth gray wire that isn't used, so I cut it and taped it off with electrical tape. Once you plug the harness back in, your rear wiper switch up front should operate the motor exactly like it did with the original.
Because the spline on the replacement motor is smaller than the original Mopar one, you'll either need to modify your original wiper arm or purchase a new one that fits. I opted to purchase a Dorman 42550 off Amazon for about $25, and I removed the attached washer hose since it's not needed. I also attached a new 14" wiper blade, the Rain-X 5079272-2.
The spline on the new motor also sits a bit further away from the glass than on the original motor, so I bought a couple of rubber washers from Lowes for 0.50 and used those to snug up the plastic locking nut on the outside of the glass.
All in for the new motor, new wiper arm, and new wiper blade, was just over $80, still only about half of just the rebuild service through Rockauto. This only works if you have the original mounting hardware you can take off your old motor, but I was pretty happy with the final result and glad to have a quiet and operational wiper back.
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