Thread: 2004 Grand Prix, trans shifting issues

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  1. #1 2004 Grand Prix, trans shifting issues 
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    when cold the trans has "firmer/harder" shifts 1-2 is the worst, the others are ok. However when it's hot the shifting is very good, super smooth, you need to watch the tach to tell when it shifts. it shifts harder into reverse/drive, randomly hot/cold but only for the first few times of the day. (not a clunk, but it will get like that if no i don't do something now.)

    I am however noticing that there is a delay between shifts, not a long time but it's there. I am thinking of a doing a pan drop and filter, with SYN ATF. Dex 4 right or better? is there anything else I could check or do?

    Thanks.
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  2. #2 Re: 2004 Grand Prix, trans shifting issues 
    Moderator dsmuts's Avatar
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    Use dex 3 and a bottle of Lucas stop slip
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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