1991 GMC Sierra - Page 5 - Answered Questions & Fixed issues

there is no "choke". it needs 13psi to run, check fuel filter and pressure.

I didn't think that a 91 Chev still had a carburator but if that's what you have then the first thing you should do is replace the fuel filter. It is hiding behind the large nut on the front of the carb where the fuel line goes in. If that doesn't cure it I would say you are going to have to rebuild it because it sounds like there is dirt inside it. The only way to clean that out is to take it apart. If you have to do this your best bet would be to take it to a shop that specializes in this work. Carbs are like voodoo, only a few can make them work right. Hope this helps.

Check the vacuum line to the MAP sensor.

the problem you are having is the actuator it is a electrical component it is mounted on the case below and behind the blower motor

sounds like to me the bulb socket needs changed or bad ground .pull back the carpet along the back and look for ground contacts.there should be a place where they conect a few ground wires .

Hi!

I think you will need to program the computer soon as you put new cluster in. Good luck

If its for the 4X4 it is on the transfer case

I would go to a salvage yard and get the heater controls out of a salvage vehicle.

I have the same problem with my daewoo because the switch underneath and on top of my brake pedal has a push in type plastic nail so this switch might need to be changed. You should also check all fuses to see if any blowned but if any are blowned that you should have a short somewhere that is making this fuse blowned.

Did you put the correct fluid type in? Check to make sure that you didn't bump any wire connections at the transmission. Check to make sure that the shift linkage is hooked up correctly. Did you make sure that the filters were exactly the same? Some transmissions will have a deep and shallow pan option. Did you get the filter installed correctly. Your question lists two years in it. If it's a 1988 it is possible I think that it may still have a vacuum modulator on it which could be messed up or the vacuum line disconnected.

With the TBI, the AIC solenoid can get stuck and cause problems. It's on the passenger side of the TBI assembly and should have a four wire harness attached.

You probably have either a bad switch or a bad wiper module. The modules are common for failing and are easy to replace. Locate the wiper motor and on it is a black plastic cover held on by 3 or 4 torx headed screws. Unplug it, remove the screws and cover and then you can remove the module and replace it.

sounds like the backup switch has failed, It should be mounted on the
transmission with two wires going to it. Runs about 5 dollars online.

You may have a body throttle position senson. You need a scanner to confirm that. You may have a vacuum leak somewhere around the throttle body. You may have a fuel pump getting weak so I would check fuel pressure. You may have an EGR valve that is partially stuck open.

you have to pull the door panel off and i would first test the motor make sure it is getting power and that the motor really is fried to do that just take a test light hook it to a good ground and poke wires until you find the power if your not getting power then you need to trace that wire and find out y not, but if you are getting power then try to pull/push up on the window as you use the switch to roll it up to help the motor that might not be strong enough to lift the window, if that dont work then you are going to have to unhook the window motor from the door and the window you may not have to take it completely out just enough so that the teeth on the gears arent touching anymore then push the window up into place and bolt the motor back into place to hold the window were it needs to be, or if you have the money check the wires first make sure there getting power and it is the motor and buy and new motor and install it while you have the door all apart and the motor already halfway out.

It could be that since the column moves that much it could be that a connector came loose or a ground wire broke but it sounds like your problem is in the column.

Depending on the wine itself ; you may be able to hear weather it is coming form a front belt or a slipping in the transmission. I would check all fluids and go from their. Sometimes the idler pulley will make the same sound if the belt is worn beyond limit .But usually it will tick if the bearing isn't worn..............Hope this helps.

you need to look for a short in the wiring or either the panel itself....

what it sounds like is the panel is overheating and shutting down

It sounds like your Starter solenoid is stuck, worn out, etc. Either way, have your Starter tested at Autozone, or similar, and replace if it is found to be bad. I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

light switch needs replaced after checking fuses