Maybe a bad switch
The heater might not shut off in a 1998 Chevy S10 Blazer because the temperature controls are turned up to heat. The makers of this type of truck and most GMC vehicles allow for constant air to flow throughout the vehicle at all times. In the summer, just turn the temperature control lower.
push up and turn on the housing
turn signal & wiper relay for a 1998 Chevy blazer
multi switch on steering coloum is wearing out
Worn right front wheel bearing.
NO. More the likely the ball joints need to be greased.
If the dash lights go on and off and the heat won't turn off and electrical noise is coming from the heater, there could be a short in the wiring on a 1998 Blazer. This is also possible if the ground wire for these items is not longer attached.
fuel problem. make sure you have gas of course, check out your fuel pump, injectors, fuel lines etc.
turn signal arm
Does it turn over? Compression, Fuel, Spark?
Probable causeFlasherFusecontrol lever
one of the lights is not working