Hi....welcome to the Forum
Here is a selection of wiring diagrams for the Vivaro but depends on which circuit you're after
https://www.google.com/search?rlz=1C5CHFA_enGB830GB831&source=univ&tbm=isch&q=2011+vauxhall+vivaro+wiring+diagrams&sa=X&ved=2ahUKEwje4PzJvYvsAhXcQEEAHQy3BUIQjJkEegQIDBAB&biw=1670&bih=931
Hi Tracy.
The oil quality should have been reset to 100% when the service was carried out.
It will need to be reset using a diagnostic tool and would be best to take it back to the garage for them to reset it
Hi....welcome to the Forum
Maybe worth looking at the range of aftermarket bulbs available in Halfords.
A lot of brands (such as Philips) boast increased output of around 35%, etc so maybe worth trying these first to see how improved the lighting becomes.
Hi.....welcome to the Forum
It sounds more like the turbo being restricted (variable vanes clogged up with carbon) and going to limp mode when it reaches a certain rpm.
Usually accompanied by a P0299 fault code to state Turbo Underboosting
Here is a link to some dimensions for the Insignia
https://www.google.com/search?rlz=1C5CHFA_enGB830GB831&source=univ&tbm=isch&q=vauxhall+insignia+dimensions&sa=X&ved=2ahUKEwjJ4Jz4s-jrAhVYi1wKHUQ3BUEQsAR6BAgKEAE&biw=1920&bih=1001
Hi....welcome to the Forum
I would be concerned that the unit freezes on a 2020 car, it may be worth taking it back to the dealers and see if there is a software update to resolve this issue.
I may have seem some updates being advertised online by individuals who have a crack to make it work but can't remember who they were so worth searching and see what comes up
I suppose you could connect it without fitting it and see if it cycles with the ignition on.
Beware that you can return it after it has been fitted as some supplier won't accept it back as can see the pins are scratched when fitted
It shows the Hydrocarbons (HC) being high....this suggests an ignition fault which is causing the not all of the fuel to burn.
Suggest cure this and the emissions will come in line.
Sparkplugs and HT Leads are usual suspects and then check the emissions after that (including Oxygen (O2) level which should be 0%)
Hi Andy....hope you are staying well?
Coolant pressure caps is important to be be in good condition and also the correct rating to allow the coolant boiling temperature to be raised by increasing the pressure in the system. Too high and it will pop at the specified pressure. If faulty it can draw air into the system and create a vacuum as you are experiencing.
I would be tempted to replace the cap with a genuine part from the local Vauxhall dealer (shouldn't be too much)