BLOWER MOTOR PROBLEM

[RICHARD TILL]

i`ve developed a blower motor problem. its on my 90 model ZR-1 #2161. the motor is constantly running at high speed. only way i can stop the motor is to pull the battery cable or disconnect the motor. when choosing an operating mode the green led indicator will change but has no effect whatsoever. a picture of a fan is displayed in the control head display. i`ve got a gm service manual ST-364-90 but havent look thru it yet. am going to tonight but hoping someone smarter than myself can steer me in the right direction. the car has 115k miles on the clock and this is my second problem ever. the first was starter problems. many thanks in advance to anyone who can help with this problem. richard......