20 Most Recent 2004 Chevrolet Blazer - Page 9 Questions & Answers

try replacing the temp. sensor its not tell the computer how cold it realy is out side and the true temp. of the motor.and should be a cheap place to start. also have u replaced fuel filter. it might have water traped in it that is freezeing up and stoping the flow of gas.also a cheap place to start.... hope this helps

Change the EGR valve and things should be fine..Hope this helps.

Your heater core either leaks or a hose is leaking,inside on the carpet or behind it

SOUND LIKE ALTERNATOR PROBLEMS.IF HEAD LIGHT DIM THATS A SIGN LOSING BATTERY POWER.

Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great. How to guide for Trailblazer instrument cluster repair

If the bulbs are good, check your DRL fuse.

60A mega

If you see oil from the timing cover, you've got bigger problems. Regardless, rust penetrant never hurts. Diff tricks for busting stubborn fasteners:
-Tighten a smidge before trying to loosen. (busts loose rust)
-Without damaging the head, sharply tap the head with a suitable size hammer.
-6 point bites better than 12 pt
-Always enure you've got a good bite and watch your knuckles.
Those bolts aren't that tight anyway, you'll get it.

There isn't one from the factory. Just a keyless entry system. Security light will blink until a good key is used.

there could be a cable running from motor to lock which might be broke or the moto might be worn out causing it to operate but not work properley

If you cant get the dipstick out then its probly been awhile since its been checked. Endless you heard horrible noises coming form the engine before you shut t off its safe to say its not locked up due to lack of oil. I would suggest having the started checked it sounds as if it has out lives its life expectantcy.

The clutch is heat pressed on and usually can't be removed without a spread press,Usually the whole compressor is replaced due to the price of clutch repair.

black is always ground.

Not every rad has a drain. Carefully, and without tugging, release the lower rad hose and drain there.

The starter's only function is to turn the engine--if it is doing that, then the starter is ok. If the engine doesn't fire, then you have ignition, fuel, computer, mechanical (valves, etc.), or other complications to contend with. Go to Autozone or other business that offers a free scan of your computer and write down all of the codes it finds, which are clues to what part is probably bad. Plugged fuel filter or worn-out fuel pump are likely candidates. When were the spark plugs last replaced? Hope this helps!

have you knocked a pipe off of the inlet manifold ??

service engine light normal is an indicator that something is wrong with your emission system, such as an oxygen sensor is going out or a sensor for some of the other emission control systems.

Removal & Installation To Remove:

1. Properly relieve the fuel system pressure.
2. Drain the fuel tank through the filler pipe.
3. Support the fuel tank.
4. Remove or disconnect the following:
   • Negative battery cable
   • Filler neck
   • Shield and tank straps
   • Fuel lines and vapor hose from pump and tank
   • Electrical connection from fuel pump
   • Fuel tank
   • Fuel pump/sending unit assembly by turning the locking ring (located on top of the fuel tank) counterclockwise using a spanner wrench
   • Fuel pump from the fuel lever sending device

To Install:

1. Install or connect the following:
   • Fuel pump in tank with new seal around opening
   • Tank and connect fuel lines and vapor hose
   • Tank to the frame
     1. Torque to: 33 ft. lbs. (45 Nm)
   • Shield
   • Fuel filler neck and clamp
   • Negative battery cable
2. Refill the tank.
3. Run the engine and check for leaks.

View of the in-tank fuel pump assembly.

It sounds like it may be your O2 sensor because if it is not working properly, the engine cannot determine how much fuel to ingest which would cause rough idling.

• sometimes a bad 02 sensor causes a fuel smell from the exhaust, or you can just remove and check the sensor. if its really black "like charcoal" you might wana get it changed, also checked the wires on it and make sure they're not torn or anything. have scanned to find problem code if check engine light is on. good luck!!
  

Most likely if you didn't have it before,what you worked on, you have to recheck your work for a vacuum leak