» » »

Chevrolet Q&A

Ask Your Question

2000 Chevrolet Astro Question: crank shaft seal replacement

 

Question

sterling4, Granite Bay, CA, September 23, 2013, 13:50
 Rookie

rear seal is leaking

3 Answers
Flag This
  • Answer #1

    goodguy September 23, 2013, 23:11
     Master

    you will have take the tranny out to change the crank seal,if it is the rear main seal then you will have to drop the oil pan providing its a two piece seal

    Reply
    Flag This
  • Answer #2

    Greg's Orange Auto (13030 Answers) , Orange, CA - (714) 361-9386
    globalhelper September 24, 2013, 06:08
     Master

    agree with good guy or ck www.alldatadiy.com

    Reply
    Flag This
  • Medium-star Best Answer
    pushrod September 24, 2013, 08:28
    Profile_thumbnail
     Master

    If not done already, remove the engine cover and make SURE it's not the oil sending unit or the distributor o-ring seal that's leaking!! Either of these can leak oil down the rear of the engine and appear to be coming from the rear crankshaft seal. This 4.3 engine has a very reliable, one piece, round crankshaft seal, which requires transmission removal to access. "IF" it is indeed this seal!!! More common for oil to leak elsewhere however rear seal is possible..

    Reply
    Flag This