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Experiencing shudder in my 2013 Holden Colorado

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My 2013 Holden Colorado shudders when in fifth gear around 1500-1700rpm. I have had several things checked gearbox, engine mounts, shocks, engine wiring with no luck.

That the shudder only occurs in fifth gear is, perhaps, the big clue here. If the problem was an engine mount or drive-shaft or suspension problem, the shudder would appear at those same engine revs or road speed, regardless of what gear the car had selected. So maybe you need to dig a bit deeper into the transmission to see if there’s a problem with the torque converter, the way the converter lock-up is working or even a problem with the gearset itself that offers up fifth gear. This is, of course, if the vehicle is an automatic (which you haven’t disclosed).

If it’s a manual, then fifth gear is the overdrive ratio for that gearbox and some Colorados were fitted with five-speed manuals that had a problem with the thrust washer on fifth gear. This washer could fracture if the vehicle was used for towing heavy loads. When the washer finally failed, the vehicle could jump out of fifth gear and actually lock up the rear wheels. Back in the day, Holden was actually replacing the entire gearbox if the vehicle was one of the affected ones. It would be worth checking with a Holden service centre to see if your vehicle is from that batch.

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