I keep getting an SRS light. When I run the codes is tells me it is driver's side stage I fault. Anyone know if this indicates and issue with the SRS control module or perhaps the driver's side impact sensor? I've read some on here about needing to get exactly the right module, so yesterday I opened up my center console (what a major PITA that is

) to see if I could get a look at the module. Well, unlike some of the Youtube stuff I've found it appears the module is buried deep beneath the fan for the rear seat air. It looked like a half a days job to get things pulled apart enough to actually access the module. So, I put things back together as I needed the truck to get to work today.
Anyone DIY this swap? Any tricks for making it an easier job? Any way to find out the exact correct part number? I have read here that some have had to go through several before they got the right one. Given what a PITA this job is I'd like to avoid doing it more than once. Thanks in advance.