Only time I had to have WM replace one under warranty, it tested weak on the truck. All they asked me was if I had time for them to swap it out. I wonder if this is a store problem, regional or a company policy on their batteries? Maybe I was just lucky.
I think it's a store issue.
A while back.. like 3.5 ys, I was witht he wife on vacation and our battery died.. we happened to be in a shopping plaze with a walmart.. so i simply walked over and bought a bat.. swapped it in.. same deal.. 3 yr repalcement.. etc.
well, fast forward to litterally 2 days shy of the repalcement period. wifes car is dead in the driveway one morning.. hmm.. odd. I charge it on a 25a fast charger for about a half hour while I check her cables and swap my battery into her truck to see if she left a dome lamp on or soemthing odd. nope..
ok.. get her truck started.. charge system is fine..
head over to walmart by house.
battery shows low voltage so they can't test.. say they have to charge up and test.. ok.. come in early that morning they open at 6m at that wm tire center.. ( last day!! ) they charged overnight.. and machine said good...
ok.. put battery back in send wife to work. at 3:45pm, she calls me.. bat was low but just barely started. hmm.. she works near another walmart. I tell her to meet me over there... .. we show up, I bring hte bat in. they test it.. takes 3 tests.. 1st test had some error. 2nd test showed good.. 3rd test failed. I explained the long drawn out story, and even said if they would just pro rate it vs the repalcement I'd be happy.. as obviously the battery had a real issue. after a lil chit chat, the woman takes the test strip printed by the machine from the 3rd and failing test and put it on the reciept.. apparrently that test strip print out is what is needed by whoever warranties out the battery...etc.
i ended up paying like 6 or 8$ for some kind of fee or tax or something.. but got a new bat... swapped it back in in the parking lot. I used to think that yukon had a hard to swap battery. now I'm good at it and can do it in about 3 minutes..
that was late last year.. truck is doing ok...
I'd call it a store issue.. some ar emore willing to help than others...