20 Most Recent 1998 GMC Blazer Questions & Answers

see if this site helps you.

http://www.boxwrench.net/specs_index.htm

Compass/Temp w/o Trip function Yellow - Key on 12v Black - Ground Light Green/ Black tracer Ambient air temp sensor At about 70 deg I have almost 10K ohms resistance. Just for a point of reference. Dark Green VSS Brown Goes to the dimmer switch that adjusts the brightness. Gray Goes to headlight switch so the display will dim when the lights are on

the signal flashing is a bad hazard switch. they all brake. if you hold the flasher buton just the right way the noise stops. sounds like your dash is shorted with the flasher

before tracking down the wire problem unplug the compressor and connect the wire directly to the hot terminal on the battery to make sure the clutch works it should engage

has it had a tune up and the air filter check,and are all the tire set at 32 psi

http://forums.justcommodores.com.au/holden-commodore-part-numbers-descriptions/61361-m20-m21-something-else-help.html

according to this post, the numbers on you gear box are that of a holden commodore

Axles usually have a half moon pin at the rear of the axle shaft. They are hard to see. but you can see them and remove them through the rearend spider gear cover.

Hi, to change the fuel filter, follow the steps below.

Disconnect the negative cable at the battery.

Loosen the fuel tank filler cap to relieve any fuel tank vapor pressure.

Wrap a shop towel around the Schrader valve on the fuel rail and remove the dust cap from the valve.

Connect the fuel pressure gauge to the Schrader valve.

Install the free end of the gauge bleed hose into an approved gasoline container, and open the gauge bleed valve to relieve the fuel pressure.

Flush the fuel filter line connectors with water, and use compressed air to blow debris off and away from the connectors.

Remove the fuel inlet and outlet lines from the filter following manufacture recommendations (have something around to catch gas that is in the lines and to lay the lines in while prepairing to put new filter on.

To install a new filter, begin by wiping the male tube ends of the new filter with a clean shop towel.

Apply a few drops of clean engine oil to the male tube ends on the filter.

Check the quick connectors to be sure the large collar on each connector has rotated back to the original position. The springs must be visible on the inside diameter of each quick connector.

Then install the filter in the proper direction and leave the mounting bolt slightly loose.

Install the outlet connector onto the filter outlet tube and press the connector firmly in place until the
spring snaps into position.

Grasp the fuel line and try to pull this line from the filter to be sure the quick connector is locked in place.

Then, do the same with the inlet connector.

Now tighten the filter retaining bolt to the specified torque.

Once everything is connected, lower the vehicle, start the engine, and check for fuel leaks at the filter.

More than likely it is the encoder motor on the transfer case if it is Auto 4x4.

You will have to take the steering knuckle completely out of the way, which requires getting the ball joints loose from the knuckle. You will also have to take the bottom bolt out of the shock because there is not enough clearance to get past it. The Blazers had two different was of holding the CV shafts to the front axle housing, a series of 15mm bolts or a retainer clip on the shaft that goes into the differential. If you don't see bolts, then you should be able to pop the CV shaft out with a pry bar. Give it a few good shoves to reinstall the new shaft.
Hope this helps. Good luck!

Hello Guest and thank you for asking your question, on Fixya.

Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your 1998 GMC Blazer, without even using any tools. It has helped millions of people, and I am certain that it will help you, because I wrote it for people in your exact situation.
How to diagnose your overheating 1998 GMC Blazer

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Thanks for the vote, and good luck!

Use an easy out. Almost looks like a torque bit but has more grip and gets tighter as you go to loosen.

5W-30 is recommended.

If the compressor is cycling on and off and the system isn't getting very cold it's low on freon. You'll need to have it leak tested, repaired, and recharged.

The air/fuel mixture screws meter the fuel that flows under each primary throttle plate when the throttle is closed at engine idle. Both of the air/fuel mixture screws control fuel flow.

Turning the mixture screws "in" will decrease the fuel flow and "lean" out the air/fuel mixture, and turning the mixture screws "out" will increase the fuel flow and "en-rich" the air/fuel mixture.

To adjust the air/fuel mixture warm up the engine to normal operating temperature and with the choke off at normal idle speed. Adjust the air/fuel mixture screws one at a time, and turn each air/fuel mixture screw "in" until the engine just begins to mis-fire, then back the air/fuel mixture screw "out" 1-1/2 - 2 turns a half turn at a time until the idle is smooth.

If you need a base setting to start with, then turn both air/fuel mixture screws "in" until they lightly seat, and then back them "out" 1-1/2 - 2 turns and then start and warm up the engine and then proceed to adjust the air/fuel mixture as described above.

Tranny pan is the shallow pan under tranny. Oil pan is the big deep pan under the engine block