Service Manual (Download)

[Jack GS]

Here is a downloadable service manual for the 2018-2020 Buick Regal. It is nearly 10,000 jumbled pages and most of the links within the document are broken, which makes it difficult to navigate. Stuff isn't too hard to find with some mindful searches though.

Credit goes to @stooge, who originally shared it on the Commodore Forum.

2018-2020 Buick Regal Service Manual.zip

 

[Wlepse]

Thanks...always good to have more info at your fingertips.

 

[justiz00]

From within the forum. Good link last time I used it.

Free Chilton Online Repair Manual

Chilton Auto Repair Library Gale - Product Login Password: cactus :cool: If the password changes, it'll be updated on the latest page of this discussion.

buickforums.com

 

[Anaduff]

Quick scan...

...no rear fog lamp connexions on the BCM & only 3 wire connexions to the outboard tail-lamps. I thought Holden had the separate brake/turn signal units?

Other than that, that's quite a wallop of information!

 

[ZB Commodore Owner]

Quick scan...

...no rear fog lamp connexions on the BCM & only 3 wire connexions to the outboard tail-lamps. I thought Holden had the separate brake/turn signal units?

Other than that, that's quite a wallop of information!

Correct, the Holden Commodore has separate brake and turn signal lights. Over here red for tail and brake lights and orange for the rear turn indicators. We also have the rear fog light but only on one side..

 

[Jack GS]

...no rear fog lamp connexions on the BCM & only 3 wire connexions to the outboard tail-lamps. I thought Holden had the separate brake/turn signal units?

The manual came from the Commodore forum but it is still a Regal manual, so you're not going mad... there is no Holden specific info in there.

 

[ZB Commodore Owner]

There was a copy of the Holden workshop manual for an earlier model on the Just Commodores site. The links were all intact making it very usable and it is an invaluable document. Hopefully the same can happen for the ZB/Buick GS/Tourer etc.

 

[Rhetoric]

In my best GM Decision Maker voice: Why bother with a manual for a car we don't care about?

Thanks for the resource, Jack!

 

[2007LucerneCXL]

Buick made cars also? LOL

 

[toolmanAR]

Thank you for posting this!

 

[Rhetoric]

Buick made cars also? LOL

Many moons ago, there were these things called "sedans" and "station wagons"...

 

[2007LucerneCXL]

No way, would love to see one of those. Do you think they would have a display on them in the Smithsonian maybe next to the other extinct species.

 

[Skynet]

The manual came from the Commodore forum but it is still a Regal manual, so you're not going mad... there is no Holden specific info in there.

Well this is no good for me then. I have access to the Chilton Auto Repair Library, but what we need to know is how to fill those spots left by the GM factory.

 

[Jack GS]

Well this is no good for me then. I have access to the Chilton Auto Repair Library, but what we need to know is how to fill those spots left by the GM factory.

I hear you. I have access to the GM database myself, but having everything in one document has come in handy on occasion. Sometimes it's hard to track down the right information in the Chilton structure tree. More info is always better!

 

[danzig997]

Thanks for sharing 🚀

 

[1500cc]

Thanks Jack. Dunno if I'll ever use it, but I appreciate having it just in case 🙂

 

[Skynet]

There was a copy of the Holden workshop manual for an earlier model on the Just Commodores site. The links were all intact making it very usable and it is an invaluable document. Hopefully the same can happen for the ZB/Buick GS/Tourer etc.

I hate having to revisit this, but I am really have troubles trying to locate a Euro/UK/AU service repair manual. More specifically, the wiring diagram. I'm trying to wire my rear fogs. The lamp has five wires. I know the forth goes to the rear fog. There's 3 wires going to the LED tail vs our 2 wire. Can anyone help me out?

 

[Jack GS]

There's 3 wires going to the LED tail vs our 2 wire. Can anyone help me out?

The additional wire most likely controls the welcome lighting sequence.

I have an LED tail lamp for the Sportback and have put power through each wire to see what is what. There are some wires that seem to trim to the same light function. The version without the welcome lighting sequence has less wires.

 

[Skynet]

The additional wire most likely controls the welcome lighting sequence.

I have an LED tail lamp for the Sportback and have put power through each wire to see what is what. There are some wires that seem to trim to the same light function. The version without the welcome lighting sequence has less wires.

So, unless I wanted or could figure out the welcome feature, I could leave that wire unconnected right? I sent power to that lead and nothing happened. I just wanted to confirm that the 3rd wire in the LED portion of the inner tail lamp will not be needed. I'm racking my brain trying to figure out the rear fog lamp for the TourX .

 

[Jack GS]

So, unless I wanted or could figure out the welcome feature, I could leave that wire unconnected right? I sent power to that lead and nothing happened. I just wanted to confirm that the 3rd wire in the LED portion of the inner tail lamp will not be needed.

Yes, that's the conclusion I've come to. @Anaduff has a better understanding of the intricacies than I do though.