windsheild wipers only operate on the fastest speed. all speeds were working yesterday. does the motor did replacing? Where can I obtain step by step instructions to replace? Many thanks.
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2004 Hummer H2
Question: windsheild wipers only operate on the fastest speed.
Answer #1raiderron September 11, 2011, 00:21Master
Step by step instructions will be in a repair manual that you may be able to get online or likely at a parts store. The rheostat that controls speeds is likely bad. It is a progressive resistance circuit that builds ohms resistance to control the speed. May be a seperate part or in the motor or a prob with the speed control in the vehicle.