One common problem with our seats is with the lumbar seat backs. Although there are several different reasons for problems (motors, switches, etc) the most common is the failure of the air pump diaphragm. This is a relatively simple replacement procedure except that GM does not service the diaphragm separately. So, rather than buying a $200 pump assembly, the diaphragm can be purchased directly from the manufacturer for about $15. Their information is available on the ZR1 Net Homepage and in previous issues of the Legend.

Speaking of seats and headroom, a helpful tip to gain some additional head space is to simply unsnap the front of the lower seat cushion and remove the cushion (all found money should be forwarded to us immediately). Notice the two, 2 inch elastic straps which run front to rear. By simply unhooking these two straps, the seat cushion will settle enough to provide another inch plus of valuable headroom after a brief break in period.

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