20 Most Recent 1994 GMC Yukon - Page 3 Questions & Answers

If your talking about the part of the clutch that's on the inside of the A/C compressor pulley the answer is; yes.

Fuel pump circuit (low voltage)
Try replacing the fuel pump relay or testing it if you have the manual.

should be a single brown wire near distribitor unplug it then with timing light set timing to 0 degrees or what ever under hood sticker states when done tighten distribitor back down and plug wire back in

One fuse box is located under the hood on the driver's side. the other is located on the driver's side of the cab, open the driver's door and on the side of the dash there is a door to open to reveal the fuses there.

If the truck is fuel injected and probably is the aftermarket headers are sending a signal to the computer and feeding more fuel to the engine fuel is controlled by the intake and exhaust.as for the o2 sensors you will be fine without them they only turn on your engine light when it
has been covered in carbon monoxide to the exhaust.

Check to see if there is voltage at the high beam lights,and if not,replace the dimmer switch.

yes, your a/c need to be recharged. many garages advertise that they will do this for about 20 dollars

Hi,
Your oxygen sensor is designed to send a signal to the engine, telling it to burn more or less lean as determined by the oxygen in the exaust. This may be your culprit.
I hope this helps... Good luck.

Unbalanced tires wont give a vibration all the time at low speeds.Have them balanced and check wheel bearings and ball joints.If it still persists then have the prop shaft balanced

Normally when I see this it almost always turns out to be the actuator on the front differential has failed. It is possible that a fuse has blown but you may want to confirm that the solenoid is not bad.

I believe it is located behind the glove box to the right, which is easily removed for access. Good Luck!

yes alow presure switch is likely on GM and it could be out of freon ,safe way to tell is to put a set of gauges on it and it will tell by passing the low side switch will just destroy the compressor if it is out of freon

Isn't there a little door on your dash? Lower left.

you might need to change the thermostat.. when the thermostat isn't working correctly it prevents the hot engine coolant to circulate and give you heat.

The voltage regulator is having a problem. It is built into the alternator. You should take it to a local parts store that does free testing, and have it tested out.

trans beside the shifting mechanism, when you have a buddy shift it into reverse you can see where the switch is

Diagnostic trouble code (DTC) P0601 stands for "Internal Control Module Memory Checksum Error." It is triggered when the powertrain control module (PCM) detects an internal problem, typically a failed Memory checksum test. The PCM's memory checksum test is performed regularly.Oct 27, 2023

P0601 Code: Internal Control Module Memory Checksum Error

CarParts.com https://www.carparts.com > ... > OBD-II Trouble Codes ..

The black wire with white lettering running from the lug on your alternator to your battery cable should be your fusible link and it will say on it.