Holden Crewman Gearbox & Transmission Problems

YOURS is a well known problem with the rear axle in the Crewman and One Tonner. My understanding is there is no guaranteed fix. Usually the rear axle is switched for another one, sometimes with success, sometimes without. If you don't have the noise with the latest rear axle, it's unlikely to develop again.

THIS is a common problem. To my knowledge Holden has no solution other than to fit a new diff and hope it is better. Keep up the pressure and demand a fix.

Have the diff mounts checked; they're likely to be the cause.

I would approach Holden with a claim for part compensation, the only to do it is through your dealer in the first instance, and then direct to Holden of the dealer rejects you. If you do choose to make a claim against Holden have all your documentation available to give to them, and that includes the car’s service history. You also need to be able to support your claim that you haven’t abused the transmission. If they did agree to your claim, and I doubt they would, they would most likely supply the parts to rebuild it, and leave you to pick up the tab for the labour.

Sorry to tell you but the diff problem is a common one in the Crewman, has been since it was new. Other than changing the diff, there’s not much you can do about it, except try changing the oil.