Update 15/2/18: Local mechanic dropped it back lunchtime and presented me with a bill for £60 (not vat registered) for fitting!! Happy days. He said it's a pretty easy job, not really different to and ICE hatch and only took him 1 1/2 hrs.
So total Bill for the self sourcing replacement was £163.75 with a pattern part. Way way cheaper that £700+ for GM in the UK.
Ok. So back in August 2017 during a 60k service on the wifes Chevy Volt the knocking noise from the wheels that had come and gone since 2016 was finally identified as a worn near side (Passenger side) driveshaft. No problems 90% chance an outer CV joint is worn easy inexpensive fix? Wrong.
Bollingers Chevrolet and Ampera dealer wanted £700+ to do the repair! The part was like £800 from Chevy UK and so Bollingers quoted on the Vauxhall Ampera one (identical) which was £500, plus £200 for fitting!!
No thanks I said and off I set on an adventure to find a cheaper solution myself not using the Stealerships. But managed to get it sorted for around £200. Job is being done next Thursday.
First problem was, you cant just buy plain old outer CV joint for the Volt/Ampera. GM and any other Pattern part maker just don't make it. I enquired on several UK and USA listings on ebay for the outer CV joint for either an Ampera or a Volt , and all came back and said "sorry the listing is a mistake, the supplier doesn't do it" and the listing disappeared.
So then I found several ebay lisitings in the USA for the "Driveshaft assy Unit" as genuine GM, but still looking at $300-$500 with shipping and customs charges. Better, but still not cheap enough as you could by an outer CV joint for a Vauxhall Astra for like £50 or less.
So I came across and researched and USA pattern parts maker called "SurTrack". and they made left and right side pattern CV Axle-shafts. I also studied the GM axle parts lists online and worked out the correct Front drive Axle washer that has to be replaced (according to the Volt workshop manual) if you fit a new drive shaft. Now as the SurTrack Axle assy comes with a new axle nut, it doesn't come with this washer, so I ordered a original GM one from another ebay supplier.
Took the plunge on 26th January and ordered both on Ebay paid by Paypal. The pattern Axle was $121.77 with shipping and import taxes (£87.25) and the washer was $22.92 (£16.50). So a total of £103.75. Much more easy on the Wallet than £500 from Vauxhall or £250 from GM in the USA (via ebay).
Delivery was pretty quick, washer arrived on 7th Feb and Axle on 8th.
So for the UK nearside (passenger side) you need the USA Left side (offside/Drivers Side) Axle.
SurTrack part number is GM-8347 and I bought it cheapest off ebay here ;
CV Axle Shaft-New Front Left SurTrack GM-8347 fits 11-15 Chevrolet Volt | eBay
The washer is universal to both sides and is GM part number 11611232 and I bought it off ebay cheapest here ;
GM OEM Drive Axles-Front-Washer 11611232 | eBay
Just been to see a local one man band mechanic just outside the village who has his own workshop and lives opposite my estate, took him the part and the workshop manual printout (thanks to the member who emailed it to me) and he studied it, said he had done a "hydrid" course but never worked on one yet, but we agreed this job was no different to doing it on a Focus or Astra, so he quoted 2 hrs max @ £40 p/h. Wont be more than £80 he said. Only extra cost will be may a litre of GM Dexron VI fluid to top the gearbox up if he cant catch all that dribbles out when he removes the inner part of the axle from the halfshaft in the gearbox.
So roughly I am now looking at the job costing a reasonable £200ish rather than £700 from the main dealer.
To add if you need the UK offside axle replaced, which is the USA Right side (nearside/Passenger side) then the axle part number from SurTrack is GM-8343 and you can order it off ebay here ;
CV Axle Shaft-New Front Right SurTrack GM-8343 fits 11-15 Chevrolet Volt | eBay
Some photos of the parts when they arrived ;