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Username Post: 2003 4.3 rear main seal        (Topic#354678)
Posts: 37

Loc: saint louis missouri
Reg: 09-27-03
01-02-19 09:24 AM - Post#2756331    

Does the pan have to dropped to replace seal in a astro van


Senior Chevytalk Moderator
Posts: 24620
Loc: Austin, TX 78748
Reg: 05-09-00
01-02-19 11:14 AM - Post#2756347    
    In response to fitter

No, but the trans needs to be pulled back. Next the flex plate comes off. It's a one piece seal. Are you sure it's leaking? Check the rear valve cover area. Next, the mating surface between the lower intake and block edge. Next, the oil pressure sensor too. If any of those leak, it will look like a rear main seal leak.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles

Posts: 37

Loc: saint louis missouri
Reg: 09-27-03
01-02-19 12:50 PM - Post#2756355    
    In response to gchemist



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