A:
If it's the manufactures warranty, then it is only important that you meet LG's requirements as stated in the manual. If it's a Best Buy purchased warranty, then please consult with www.forums.bestbuy.com or call 1-888-BEST BUY (1-888-237-8289).
The power cord as it turns out is not included (generally it is not included with dryers).
"The power cord (pigtail) connection between wall receptacle
and dryer terminal block IS NOT supplied with dryer. Type of
pigtail and gauge of wire must conform to local codes and
with instructions on the following pages." (Manual Pages 21-25)
Thank you Harriet for writing to us, have a lovely day!