1993 Cadillac Seville STS Q&A

1993 Cadillac Seville STS Question: when driving 40 m.p.h. the tach is @ 3,500, is this normal?

Tach red-lines @ 6,500+, what is the deal with these Northstar engines? Are they reliable? -
Answer 1
Have transmission checked! It is either slipping or in a lower gear with that many rpm @ 40 mph. -