S10/T10 P/U 2WD L4-151 2.5L (1988)
6.
Remove blower motor switch. (Figure 2)
7.
Remove the 2 control base plate mounting screws. (Figure 2)
8.
Remove the control baseplate.
9.
Remove the 4 housing to bezel mounting screws. (Figure 3)
10.
Discard the broken housing.
11.
Apply a small amount of GM silicone grease, P/N 12345579, or its equivalent to areas of the new housing where the mode and temperature levers
protrude through the housing slots. (Figure 3)
NOTE:
Do not use petroleum based lubricants. Petroleum based lubricant causes the housing material to become brittle and generate a repeat failure.
12.
Reassemble using the reverse procedure. Use care when assembling the base plate to the housing and bezel. The mode control lever must be