I have having one hell of a time to find a bull bar/lightbar for my 2002 denali sierra.. does anyone know what company make one? any suggestions would be greatly appreciated... thanks in advance

Grey, may I suggest that you visit:

www.denalitrucks.com

Register to participate in forums there, which are far more active than what you will find here, and ask those guys the same question.

Most of those guys either have or had a Sierra Denali just like yours, with it's unique front end having the different bumper cover and lower grille opening etc.

Of the remaining active guys I see active here on the Quadrasteer forum, even though we all have Quadrasteers, a lot of us have either Chevy bowties or GMC 3/4 tons, so we we may not all have the unique Denali front end with the different bumper, etc.

But the guys at www.denalitrucks.com (some of whom participate here too) will definitely be of more help, in a more timely manner too.

As far as light bars, I'd check out various offerings from Warn, as well as the Smittybuilt Outlander Sport. Smittybuilt was dissolved as a company back in August, but 4WheelParts Wholescammers bought the name and the inventory, so they may have stock available.