Thompson GM UK GM servicing, parts and owner advice

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UK GM servicing, parts and owner advice

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Small, Cheap, and Quietly Competent: Running a Vauxhall Viva in 2026
Parts & Sourcing

Small, Cheap, and Quietly Competent: Running a Vauxhall Viva in 2026

The Viva was never a headline act, but it is a genuinely useful little GM runabout if you buy with your eyes open. Here’s how to check one, source the right bits and keep a 2026 example from becoming a false economy.

The Borrowed-Parts Saab: Running a GM-Era 9-3 Without Paying the Trollhättan Tax
Parts & Sourcing

The Borrowed-Parts Saab: Running a GM-Era 9-3 Without Paying the Trollhättan Tax

The GM-era Saab 9-3 is still a usable modern classic, but only if you treat it as a parts-bin car rather than a bespoke one. Here’s how to inspect one, what breaks, and where Vauxhall/Opel numbers can cut the bill in 2026.

The Seven-Seat Shakedown: Getting a Zafira B Christmas-Ready Without Wishing It Was Newer
Servicing & Maintenance

The Seven-Seat Shakedown: Getting a Zafira B Christmas-Ready Without Wishing It Was Newer

A high-mileage Zafira B is still one of the cheapest ways to move seven people and a Christmas boot-load. This is the pre-trip inspection plan we would follow before trusting one with a frosty motorway run in 2026.

LS Power, Salt Spray and Holden Part Numbers: A VXR8 Survival Guide for British Roads
Servicing & Maintenance

LS Power, Salt Spray and Holden Part Numbers: A VXR8 Survival Guide for British Roads

The VXR8 is a Holden Commodore in a Vauxhall suit, and in 2026 that means dealer support is thin but parts cross-referencing is strong. Here's how UK owners can keep the LS engine, brakes and underside healthy — and what to check before British salt gets to work.

The Seller-Proof MOT Check: Reading a Used Vauxhall’s Paper Trail Like a Technician
Servicing & Maintenance

The Seller-Proof MOT Check: Reading a Used Vauxhall’s Paper Trail Like a Technician

The DVSA MOT history is free, permanent and far more honest than a freshly valeted forecourt car. Here is how to read mileage gaps, advisory wording and model-specific fail patterns on used Vauxhalls before you make an offer.

Rear-Door Lockout: Sorting the Vauxhall Meriva’s Stubborn Latch for Under £30
Servicing & Maintenance

Rear-Door Lockout: Sorting the Vauxhall Meriva’s Stubborn Latch for Under £30

A rear door that refuses to open is one of the Meriva’s more annoying party tricks, but it is often a cheap cable or latch fault rather than a terminal bodywork problem. Here is how UK owners can work out whether the inner or outer handle is to blame, source the right part, and avoid a main-dealer bill for a sub-£30 fix.

Cruze Control: How to Keep Britain's Forgotten Chevrolet on the Road in 2026
Parts & Sourcing

Cruze Control: How to Keep Britain's Forgotten Chevrolet on the Road in 2026

Chevrolet left the UK showroom game years ago, but the Cruze is still a tempting sub-£2,000 runabout. Here's the honest owner's plan for engines, faults, parts commonality and servicing now that there's no dealer network to lean on.

Stop-Start, Start Again: The Real Cost of Feeding an Astra K or Insignia B an AGM Battery
Servicing & Maintenance

Stop-Start, Start Again: The Real Cost of Feeding an Astra K or Insignia B an AGM Battery

Stop-start is easy to ignore until the battery starts sulking. Here is how Astra K and Insignia B owners can test an AGM battery properly, understand what registration really changes, and work out whether the £250 garage bill is actually the cheaper route in 2026.

Short-Hop Diesels and Sooty Secrets: A Mokka X 1.6 CDTi Winter Survival Plan
Servicing & Maintenance

Short-Hop Diesels and Sooty Secrets: A Mokka X 1.6 CDTi Winter Survival Plan

School runs, cold starts and a 1.6 CDTi are a tricky mix for any DPF. Here is a practical UK owner's plan for spotting trouble early, keeping regeneration chances alive and weighing up forced regen against replacement in 2026.

The Scrapyard Parts Shelf: Ten Vauxhall and Chevrolet Spares Worth Stashing This Winter
Parts & Sourcing

The Scrapyard Parts Shelf: Ten Vauxhall and Chevrolet Spares Worth Stashing This Winter

Breakers’ yards are thinning out and main-dealer stock for older GM models is going the same way. Here are ten used parts worth pulling now, what to pay, and how to store them so they are still usable when you need them.

The Weekly Top-Up Club: Hunting a 1.4 Turbo Coolant Leak on Astra J and Mokka
Servicing & Maintenance

The Weekly Top-Up Club: Hunting a 1.4 Turbo Coolant Leak on Astra J and Mokka

If you are carrying a bottle of coolant in the boot of your Astra J or Mokka, the 1.4 turbo is probably telling you something. Here is a methodical, UK-friendly leak hunt that starts with the cheap bits and works towards the jobs that actually hurt.

The £3,000 Diesel Estate Gamble: Keeping a Vauxhall Insignia 2.0 CDTi Honest in 2026
Servicing & Maintenance

The £3,000 Diesel Estate Gamble: Keeping a Vauxhall Insignia 2.0 CDTi Honest in 2026

A £3,000 Insignia Sports Tourer looks like a lot of diesel estate for the money — until the swirl flaps or DPF start talking. Here's what to scan, what to budget, and when to walk away.

The Cold-Start Cough: Making Sense of Corsa D 1.2 and 1.4 Timing Chain Noise
Servicing & Maintenance

The Cold-Start Cough: Making Sense of Corsa D 1.2 and 1.4 Timing Chain Noise

A cold-start rattle on a Corsa D is not automatically a four-figure disaster, but it is not a noise to ignore either. Here is how UK owners can tell a tired tensioner from a stretched chain, what to ask a garage to inspect, and what a realistic 2026 repair bill looks like before deciding to save or scrap the car.

Dongle Diplomacy: What £20, £120 and £1,200 Diagnostic Setups Actually Do on an Older Vauxhall
Parts & Sourcing

Dongle Diplomacy: What £20, £120 and £1,200 Diagnostic Setups Actually Do on an Older Vauxhall

You can spend twenty quid on a Bluetooth dongle or over a grand on a genuine-grade Tech2 setup, and the gap between what they can do is bigger than most owners realise. A practical guide to which diagnostic kit actually talks to GM-era Vauxhalls, Opels and Chevrolets in 2026 — and where the sensible line sits.

The Six-Speed That Sings: Diagnosing an M32 Bearing Whine and Pricing the Fix in 2026
Servicing & Maintenance

The Six-Speed That Sings: Diagnosing an M32 Bearing Whine and Pricing the Fix in 2026

The M32 six-speed is a decent gearbox with one very well-documented weakness, and by the time most owners notice the noise the casing is already paying for it. Here's how to confirm a bearing fault early, what genuinely causes it, and what a rebuild versus a used box will set you back in 2026.

Before the Gritter Arrives: A November Rust Audit for Ageing Vauxhalls
Servicing & Maintenance

Before the Gritter Arrives: A November Rust Audit for Ageing Vauxhalls

Salt season is about to start, and the cars most at risk are the ones still earning their keep. Here is a practical November inspection and undersealing plan for Astra H, Corsa, Insignia and Antara owners who want another five years.

The Genuine-Part Question: Where GM Badge Tax Makes Sense on a Daily Vauxhall
Parts & Sourcing

The Genuine-Part Question: Where GM Badge Tax Makes Sense on a Daily Vauxhall

Genuine GM parts are not automatically better, and cheap pattern parts are not automatically false economy. The trick is knowing which components carry real risk and which are commodity items.

The Astra H Oil Trail: Curing the 1.8's Leaks Before They Write the Car Off
Servicing & Maintenance

The Astra H Oil Trail: Curing the 1.8's Leaks Before They Write the Car Off

A £700 quote on a car worth £1,500 feels like the end of the road — but on the Family II 1.8 it usually isn't. Here's how the leaks actually stack up on the Astra H and Zafira B, what each one costs to put right, and the rust check that decides whether you spend the money or ring the breaker.

Scrap or Save: Five GM Motors Worth Dragging Out of a British Yard in 2026
Parts & Sourcing

Scrap or Save: Five GM Motors Worth Dragging Out of a British Yard in 2026

Every breaker's yard in Britain is full of cars that were one £200 repair from another five years on the road. Some of them are worth a second chance. These five are, and here are the three you should walk straight past.

The £4,000 Hybrid Gamble: Running a Vauxhall Ampera in 2026
Servicing & Maintenance

The £4,000 Hybrid Gamble: Running a Vauxhall Ampera in 2026

Fifteen years after launch, the Vauxhall Ampera is cheap enough to tempt UK buyers but complex enough to punish a bad purchase. This owner-focused guide looks at battery health, Voltec servicing, parts reality and whether GM’s early range-extender still makes sense in 2026.

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