Hi Richard, thank you for reaching out! We are unable to answer that question. We suggest calling the manufacturer at 1-888-636-7223. Have a great day!

Hi Richard, I'm glad to assist you. Please click the following link to see the parts item breakdown on the install instructions (https://s3.us-east-1.amazonaws.com/media-1.mbrp.com/products/S5081AL/pdfs/S5081AL_Install_Instructions.pdf). If your truck appears in the vehicle fitment information below (after selecting the year, make, model, submodel, and engine size), it is a guaranteed fit part. If a match, grab our price-cut offer and click the link below to buy it today. Happy shopping! https://www.carparts.com/exhaust-system/mbrp/m79s5081al?can=cpje1043_CSQA_20240527

Hi Richard, thank you for reaching out. This product consists of 7 sections. Click this link to view the installation guide for this product: https://s3.us-east-1.amazonaws.com/media-1.mbrp.com/products/S5081AL/pdfs/S5081AL_Install_Instructions.pdf As previously mentioned, this product is incompatible with your 2015 GMC Sierra 1500 standard (regular) cab. Kindly call our parts team at 1-866-529-0412 and provide the complete vehicle information. We'll be more than glad to help you look for the correct part. Hope to hear from you soon.

Hi Rick, thank you for reaching out. No, this will not. This product is for the extended cab 2015 GMC Sierra 1500 with a 6.5-foot bed. Kindly call our parts team at 1-866-529-0412 and provide the complete vehicle information. We'll be more than glad to help you look for the correct part. Hope to hear from you soon.

Hi Rick, thank you for reaching out. We are unable to answer your question accurately due to a lack of information. Kindly call our parts team at 1-866-529-0412 and tell us more about your vehicle. Hope to hear from you soon.