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  1. CTS First Generation Forum - 2003-2007
    Backstory For a while she was having a rough start and would sometimes die unless I gave her some gas. Then one day after a lot of driving and some idling that almost felt like I lost a ton of power and it would pulse on acceleration. Turns out oil was low and I had it changed and it seemed...
  2. STS Forum - 2005-2012
    Hi has anyone else had a problem with their lh2 Northstar pinging? It doesn't matter what gas I use, I've been running 93 octane and I still get a ping, and no check engine light at all, or codes? It just started out of the blue. Right after I had power steering pump replaced. Thank you for any...
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