2004 Chevrolet Blazer - Answered Questions & Fixed issues

CPS. Lot of details in the link. https://www.google.com/search?q=2004+Chevy+Blazer+crankshaft+Position+Sensor+location ..

Engine Compartment (#STARTER) :https://fuse-box.info/chevrolet/chevrolet-blazer-1996-2005-fuses-and-relay#2003_2004_2005

If the rest of your lights are OK, there may be a dead spot on the dash dimmer control (near the headlight switch). Cycle the control a few times to see if that fixes it. Otherwise, check the fuses at the left end of the dash.

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How To Diagnose P0128 Faulty Thermostat

Car Repair Manuals Chilton Haynes Bentley Haynes Manuals Do It Yourself and DIY Auto Repair by ChiltonDIY

Under hood, left side of dash by the door light switch, under the dash high up on the left

If plug an plug wire has been replaced , an dist. cap an rotor an problem is still there ,maybe a fuel injector problem . Perform the fuel injector coil test. Refer to Fuel Injector Solenoid Coil Test . A fuel injector coil winding resistance that is too high or too low will affect engine drivability. A fuel injector control circuit DTC may not set, but a misfire may be apparent. The fuel injector coil windings are affected by temperature. The resistance of the fuel injector coil windings will increase as the temperature of the fuel injector increases. Diagnostic Aids ?€¢ Monitoring the misfire current counters, or misfire graph, may help to isolate the fuel injector that is causing the condition.

?€¢ Operating the vehicle over a wide temperature range may help isolate the fuel injector that is causing the condition.

?€¢ Perform the fuel injector coil test within the conditions of the customer's concern. A fuel injector condition may only be apparent at a certain temperature, or under certain conditions.

2 Observe the ECT Sensor parameter with a scan tool. Is the ECT Sensor parameter within the specified range? 10-32?°C (50-90?°F) Go to Step 3 Go to Step 4 3

1. Disconnect the multi-way harness connector of the fuel injectors.
2. Measure the resistance of each fuel injector between the ignition 1 circuit and the fuel injector control circuit, at the multi-way connector with a DMM. Refer to Testing for Continuity in Wiring Systems.

Is the resistance within the specified range for each injector? 11-14 ohms Go to Fuel Injector Balance Test with Special Tool or Fuel Injector Balance Test with Tech 2 Go to Step 6 4

1. Disconnect the multi-way harness connector of the fuel injectors.
2. Measure the resistance of each fuel injector between the ignition 1 voltage circuit and the fuel injector control circuit, at the multi-way connector with a DMM. Refer to Testing for Continuity in Wiring Systems.
3. Record each fuel injector resistance value.
4. Subtract the lowest resistance value from the highest resistance value.

Is the difference equal to, or less than, the specified value? 3 ohms Go to Fuel Injector Balance Test with Special Tool or Fuel Injector Balance Test with Tech 2 Go to Step 5

bad battery connetion

Heater cores don't go out ! They leak an in which case you would have coolant on the passenger side floor ,your windshield would fog up . There can get plugged , because someone mixed regular coolant with GM Dex-cool . Check you coolant is it a rust looking color ? Vehicle wont start ? how ? crank - no start or a no crank - no start ? When you turn the key to the start position does the engine spin or nothing !

I'd have a few things checked out by a pro since it sounds like this can be dangerous. 1st is your front Sway bar and bushings, have your rack and pinion checked out by a pro. Also check your wheel hub bearing assemblies. Final thought, make sure your 4wheel drive is NOT engaged, should be in 2 wheel hi. If in 4 wheel drive while on pavement, all turns will feel squirley and isn't good for your drive train.

Hazard and Turn Signal Flasher Replacement Open the glove box to expose the glove box retaining tab (1). Lift the retaining tab and allow the glove box to hang freely. Using a suitable flat-bladed tool, release the plastic retainer that retains the hazard/ turn signal flasher (1) to the C203 body harness connector (2) . Remove the hazard/ turn signal flasher (1).

Take it back. Who built the transmission?

Sounds like a faulty torque converter or torque converter solenoid to me. The solenoid is an medium level DIY job... just keep the area as clean as you can with Simple Green before you remove the old one and have a new metal spatula handy to scrape off the old gasket. The area must be pristine clean before putting the new one on. If it's the torque converter, a professional shop will need to do tis for you... big bucks. I suggest you go to Autozone and have them put a fault code reader on your Blazer... it's free and they can make sure you get the tight parts too! A Haynes manual will tell you what the fault codes mean.

Google image search "2004 Blazer (engine size) secondary air injection blower" It looks very close to something like this

on the 4.3 engine it's on the drivers side block. Can almost see it through the wheel well to the right.

after you shut it off it might run for a little while this is normal. now if its still running after 15 minutes then time to check the relay out

The smog check requires a visual inspection of your check engine light. It has to come on for a bulb check at startup to make sure it's working. But, the light must go out after starting the engine(it cannot stay on after the engine starts during a smog check). If the check engine light fails either of these two tests, the vehicle will fail the smog check inspection.
You need to have the cause of your inoperative check engine light diagnosed and repaired.

Follow the radiator hose that goes to the top part of the engine. Where the hose meets the top of engine, that the Thermostat. Remove the radiator hose, then remove the two bolts from the thermostat housing, and gently pry up the housing, once freed, the thermostat is right there, just remove and replace with a rubber gasket, and replace the housing and hose, you should be good to go.