Where is the orifice tube located on a 1991 GMC Sierra 5.7

SOURCE: orifice tube location on a 1998 gmc jimmy

Follow the smaller diameter high side line till you see a spot where there are dimples pushed in. These are the stops for the orifice so it doesn't get pushed too far in. They are usually at the front where the line goes to the radiator/condenser area.

Ned C Cook

• 3433 Answers
• Posted on Jun 29, 2009

SOURCE: I have a 1995 GMC Sierra. I'm about to replace the

You are there. and yes, I woul

SOURCE: Orifice tube loction on a 1988 GMC Suburban with

It will be at your high side line close to the fire wall going to the evaporator,it will be at the conection,unscrew it and look down in the tube you will need a tool to remove it

Marvin

• 85242 Answers
• Posted on Mar 27, 2010

SOURCE: orifice tube location on a 1995 gmc jimmy

it is located in the high pressure AC line at the AC evaporator core inlet. The high pressure line is the smaller of the two AC lines that come from the AC compressor on the engine..

SOURCE: How do I locate the ignition switch and remove it

The ignition switch is located on the top of the steering column underneath the dash.

1. Remove the cover panel from under the steering column and you should see the bracket that holds up the steering column, but before you un-bolt the bracket to lower the steering column, you must remove the clip holding the shifter position indicator cable to the column. (put the shifter into drive and you should be able to see the screw that holds the shift indicator cable adjusting clip to the steering column)

2. Remove the bracket holding up the steering column and carefully let the steering column down as far as it will go, the steering wheel will probably be resting on the seat.

3. You should now be able to see the ignition switch on the top of the steering column, and the two mounting bolts. The high beam switch might share the upper ignition switch bolt, and you will then need to remove the high beam switch before you can remove the ignition switch.

4. Remove the ignition switch mounting bolts (usually 5/16 but I have also seen 11/32 and 3/8 size bolt heads used)

5. Remove the ignition switch by lifting straight up from the column to dis-engage the interlink rod from the ignition tumbler assembly, you should then be able to pull the ignition over towards you just enough to dis-connect the two wire connectors to the switch and then you can remove the old switch from the vehicle. (the interlink rod is sticking straight up from the steering column and it slides up and down with the operation of the key, it fits into a notch in the ignition switch and that is what actuates the switch)

6. Reverse procedure to install new switch, starting with re-connecting the wire connectors and be sure that the interlink rod goes into the notch in the ignition switch.

7. When the switch has been re-installed and is ready to be adjusted, turn the ignition switch to the "ON" position and hold the key in that position and slide the ignition switch up and down until it is in the on position and your dash lights come on, tighten up the ignition switch mounting bolts and then test the operation of the switch, and re-adjust if necessary until the switch operates properly.

8. Adjust the high beam switch by pulling back on the high beam lever and just taking up the slack in the actuator rod to the high beam switch, test the operation of the high beam switch and re-adjust if necessary.

9. When the steering column is bolted back up, re-attach and adjust the shifter position indicator by placing the shifter in neutral and slide the adjusting cable clip until the shift indicator is pointing in the neutral position, test the function of the shift indicator and adjust as necessary.