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1999 Silverado Z71 4X4 Tranny Cooler


stick64
08-22-2009, 11:25 PM
Does anybody have an idea what the GVW is on the stock tranny cooler on a 99 Silverado Z71 4x4 ? Would like to upgrade but need to know where to start. The GVW spec would be nice to know. thx

j cAT
08-23-2009, 10:16 AM
Does anybody have an idea what the GVW is on the stock tranny cooler on a 99 Silverado Z71 4x4 ? Would like to upgrade but need to know where to start. The GVW spec would be nice to know. thx

the GVW depends on the vehicle equiptment supplied...what are you towing, carrying for wt.....?

the transmission should have the m30 [deep pan]

stick64
08-31-2009, 03:32 PM
No serious towing involved, jus wanted to make sure we were cooling that 4L60e with the big 33" tires. The stock cooler looks real small. I purchased a Derale pan from Summit after being insured it would fit, NOT ! Had to send it back. Put Royal Purple ATF in and would like to add another cooler. Maybe something that handles a bit more volume and a direct fitament swap ? thx

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