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What modules? Pretty much only the LH module can be repaired. All the other modules inside the CAN box, replace with good used modules if needed. Some less scrupulous vendors may claim to "rebuild" modules for exorbitant costs (>$1k) when all they do is test it, or sell a good used one with their "refurbished" label applied. YMMV, be careful out there, etc etc...
Get a good used one. There should be a plethora of them on eBay for $100 or less. These are relatively rare failures. Get a second good one as a spare. A few different part numbers are all interchangeable.
I rebuild those not just the LH module I rebuild throttle bodies as well testing every single part of them.
There are 8 important capacitors you need to do in LH modules. And the most important once are not the 4-6 light blue. But the dark axial blue one that looses it's capacity first.
Then the antal green one has a nasty tendansy to short when going out instead of just loosing it's capacity
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