Questions & Answers for: gmc jimmy high speed fan

speed blower (fan) The fan control for the htr/AC only works in the med high and high positions,I replaced the relay and the switch and still the same problem...in the 2 low positions I get nothing...

...GMC Jimmy will turn over but does not start all of the time. Its getting fuel and has spark. If you let it set a couple of hours after about 4 times trying to start it it will then start These trucks ...

...heater fan works on low and medium speed but not on high speed There are two relays for the heater control fan,a low blower relay and a high blower relay.It sounds like the hi blower relay is

...GMC Jimmy V1500 ,couple day in a row I had to go tap the blower motor for it to turn on after using control switch,then it would work on all fan speed settings except high,so 1st I checked ground to ...