I have just finished reading the seminal work on Jochen Peiper, by Patrick Agte, a huge enormous book that cost £100! It goes through his campaigns in great detail, from official records and friends and comrades. IT really gives an insight into his life, and also provides background about his trial at Nuremberg and the amazing relationship he struck up with one of the American majors.
Interestingly, even though he was not at the infamous Malmedy massacre, he accepted full responsibility as they were his troops under his command at the time. He was sentenced to death, but had the sentence commuted and spent time in prison before being released. He then worked for a variety of car manufacturers living in Germany and then retiring to a village in France with his wife.
As happens with many former SS officers, Peiper was hounded once people realised who he was (strangely enough not by the villagers who got on well with him but by outsiders), and was finally murdered in his house in 1976. The house was burnt and his remains were found, he was till clutching his rifle. Luckily he had sent his wife away a while beforehand, as he knew he was being hunted but refused to run from his house and decided to stay.
He is buried in a small Bavarian village with his wife, his two brothers and his parents.