czechnuts

Ok so I have a 94 formula. The seats lombar adjustments don't work. You can hear the seat switches click. But nothing happens. Any ideas? Can't find a thing on it in alldata or Mitchell. Help!? Where's the motor? Fuse located? Relay?

wssix99

iTrader: (5)

Lumbar adjustments? They didn't come out until '00. Either you have a special mod or I've been cheated!

Do you mean the height and forward/back adjusters? If so, check your rear window defogger. If it doesn't work also, its just time for a new 30A Circuit Breaker shared between the two. (Its very common for this particular breaker to wear out.)

czechnuts

Yes the lower back and side adjusters. My rear defrost works. Everything works but this feature.

WhiteBird00

iTrader: (4)

The problem must be on the seat itself... bad switch, bad pump motor, bad air hose, etc. All of the seat adjustments use the same wiring and circuit breaker so if the other seat adjustments (up/down, forward/back) work then you can assume the wiring and breaker are okay.

Spartan7

iTrader: (7)

My 97 has lumbar, and the GM manual specifically calls it "lumbar". So I'm not sure where you heard that.

OP, I haven't messed with it too much, but I do know the pump for both seats is under the passenger seat. The power cable for it is a jumper that plugs in under the driver seat and travels over the transmission hump. You could try testing for power to the pump, but I'm not sure which pins.

czechnuts

Thank you. I'll try that.

czechnuts

Plus neither one works. So sounds like the motor.