My 1998 gmc suburbans driver side trunk (back) door handle has come apart. It seems that I am missing a part. Are there diagrams of the inside door assembly? If I could look at one in its complete form, then I can fix it. It doesn't open, it has come attached from the mechanism inside.

GMC dealers have book or microfilm IPB, illustrated parts breakdown, on everything they sell. Go to a dealer's parts department and nicely ask them to show you the IPB on that door. It may take a few minutes to find a 12 year old car IPB and there may be paying customers who get waited on first but if you are patient and courteous eventually they can help you. Most will even print you out a page, then you will know all the parts, their numbers, how they go together, whether or not that old part can still be had through GM, and about how long it takes a GM tech to replace that part.

This works on about all cars where you can still find a dealer. Also if you have 3 dollars you can buy these IPBs on CD for many cars over on eBay.