I currenty have the haynes manual. it covers, buick oldsmobile& pontiac 85-00
lesabre, electra,park avenue,dela 88 royale,ninety eight,regency and finally bonneville.
and doesnt cover supercharge information (or many other options only available on bonnevilles). Is this the same with other brand manuals e.g chiltons? Or is there something out there that is stricty bonneville. What manuals do you guys use?

I have a Chiltons. It covers 1986-1999 Bonneville, Eighty Eight and LeSabre. For a sneak peak, go to http://www.cybrrpartspro.com/Manual%...delLookup.html

I have the two volume GM Repair guide for my specific year. I'm pretty sure they are avaialbe for each year but can be expensive. I think new they are about 100.00USD a piece, got both of mine for 80 total. Check on Ebay?

You need the factory repair manual.

www.helm.com

Factory manuals are the best, but if money is an issue, Chiltons #28200 is better than Haynes. I have both. Chilton'* vaguely covers the SC, but nothing out there really does.

I also got the 2 volume GM service manuals from ebay for my 2000 SE. Paid $50 for them and it covers everything. I was having a hard time with the Chiltons & Haynes manual trying to get specfic info on my car or any 2000+ Bonnie. So when I saw these manual on ebay I jump on it.....