vacuum leak,plugs or plugwires,fuel filter,throttle positioning sensor,
low radiator fluid or a possible bad thermostat.
no, but its not a good idea to let oil get low
all you have to do is fallow the line coming out of the compresser on is the high side the smaller fitting is the low side
change low beam lite in 1999 suburban
Could be hi-speed fan relay or secondary winding in blower motor
Typically near the accumilator, which is the aluminum vertical capsule near the passenger side of the firewall. The low fill valve will be on a line going to the accumilator.
Looking at it the one on the right
The issue with a 1994 GMC Suburban's AC not working on low speed is often due to a malfunctioning blower motor resistor. This component regulates the fan speed, and if it fails, the blower may only operate on high speed or not at all. Other potential causes could include a faulty blower motor or issues with the vehicle's electrical system, such as a blown fuse. Checking these components can help identify and resolve the problem.
May need new motor low speed winding may be burned out
My 99 gmc suburban is stuck in 4 wheel drice low
I woulld be suspicious of a tire problem such as a shifted belt.
i have a 1991 nissan sentra speed up to 35 and start to miss