20 Most Recent 2001 Chevrolet Blazer - Page 6 Questions & Answers


With 4.3L engine, you have to remove upper intake manifold to get at it.

2001 Chevrolet... | Answered on Jul 24, 2015


only on high it could be the switch on the dash has an open on high only.

2001 Chevrolet... | Answered on Jul 23, 2015


Make sure the battery has a full charge.

Are you missing anything besides fuel? Engine cranking visually check for spark at the spark plugs. Also, check for fuel injector pulse. If your missing everything, check for an rpm signal.

With the spider fuel system, start-up fuel pressure can be critical, around 60--66 psi. At the fuel pump connector, engine cranking, gray wire is voltage, black is ground. If good voltage and ground with no fuel pump action, have to suspect the fuel pump.

2001 Chevrolet... | Answered on Jul 22, 2015


A little more detail about the problem is needed to properly diagnose.

2001 Chevrolet... | Answered on Jun 17, 2015


not sure without a drive to listen to the noise in this case but main suspect weither its a auto or a manual is a worn bearing on the crownwheel and bearing ,most likely to be a pinion bearing but as stated would need a drive

2001 Chevrolet... | Answered on Jun 13, 2015


You would need to look up the code for your specific vehicle, but generally its a fuel mixture problem.
The 170 codes are for the O2 sensor reading too lean or too rich. Sometimes the sensor is the problem, and sometimes the mixture really is out of normal range.
The main result can be loss of power or excessive emissions going out the tailpipe.

2001 Chevrolet... | Answered on Jun 02, 2015


Fuel Pressure Regulator Removal & Installation 2.2L Engine To Remove:
  1. Relieve the pressure in the fuel system.
  2. Disconnect the negative battery cable.
  3. Disconnect the vacuum hose from the fuel pressure regulator.
  4. Remove the pressure regulator mounting screw.
  5. Remove the fuel pressure regulator assembly with O-ring. Inspect filter screen for contamination. If contaminated, remove and discard.
Fuel pressure regulator removal/installation (2.2L SFI engine) gm-05-22-619.gif

To Install:
  1. Apply clean engine oil to the new pressure regulator O-ring and install the O-ring on the regulator.
  2. Install the regulator on the fuel rail. Apply thread-locker to the mounting screw.
    • Tighten the screw to 106 lb in (12Nm).
  3. Connect the negative battery cable.
  4. Use the following procedure to pressurize the fuel system and check for leaks;
  5. Turn the ignition ON for 2 seconds.
  6. Turn the ignition OFF for 10 seconds.
  7. Turn the ignition switch back ON to run the fuel pump again and pressurize the fuel system.
  8. Check the fuel rail assembly for fuel leaks.
4.3L Engine RPO L35 To Remove:
4.3L (RPO L35) Fuel meter body assembly gm_trk_sil15_02-04_43_fuel_metr_body_assy.gif

  1. Before servicing the vehicle, refer to the Cautions and Warnings in the beginning of this section
  2. Remove or disconnect the following:
    • Upper intake manifold (See: Upper Intake Manifold)
    • Fuel pressure regulator retainer clip (M) and discard the clip
    • Regulator (N) from the housing by twisting and pulling the fuel pressure regulator (N) and using a shop towel to catch any spilled fuel
    • Regulator seal O-ring (R) and discard the O-ring seal
    • Regulator filter (Q) and discard the filter
    • Regulator seal O-ring (P) and discard the O-ring seal
    • Backup ring (O) and discard the ring
  3. Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system
To Install:
4.3L (RPO L35) Fuel meter body assembly gm_trk_sil15_02-04_43_fuel_metr_body_assy.gif

  1. Lubricate the NEW O-ring seals with clean engine oil
  2. Assemble the following new parts to the fuel pressure regulator:
    • Backup ring (O)
    • Regulator seal O-ring (P)
    • Regulator filter (Q)
    • Regulator seal O-ring (R)
  3. Install or connect the following:
    • Fuel pressure regulator with the vacuum tube pointing down
    • Fuel pressure regulator retainer clip (M)
    • Upper manifold
  4. Test drive the vehicle to confirm the repairs
RPO LU3 To Remove:
4.3L (RPO LU3) Fuel meter body assembly gm_trk_sil15_02-04_43_rpolu3_fuel_metr_body_assy.gif

  1. Before servicing the vehicle, refer to the Cautions and Warnings in the beginning of this section
  2. Remove or disconnect the following:
    • Upper intake manifold
    • Fuel pressure regulator retainer clip (E)
    • Regulator (F) from the housing by twisting and pulling the fuel pressure regulator (F) while using a shop towel to catch any spilled fuel
    • Regulator seal O-ring (J) and discard the O-ring seal
    • Regulator filter (I) and discard the filter
    • Regulator seal O-ring (H) and discard the seal
    • Backup ring (G) and discard the backup ring
  3. Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system
To Install:
4.3L (RPO LU3) Fuel meter body assembly gm_trk_sil15_02-04_43_rpolu3_fuel_metr_body_assy.gif

  1. Lubricate the NEW O-ring seals with clean engine oil.
  2. Assemble the following new parts to the fuel pressure regulator:
    • Backup ring (G)
    • Regulator seal O-ring (H)
    • Regulator filter (I)
    • Regulator seal O-ring (J)
  3. Install or connect the following:
    • Fuel pressure regulator (F) with the vacuum tube pointing down
    • Fuel pressure regulator retainer clip (E)
    • Upper intake manifold
  4. Test drive the vehicle to confirm the repairs
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2001 Chevrolet... | Answered on May 05, 2015


Do you the 4.3 l vortec with Central SFI fuel injection system ? On these the fuel pressure regulator is under the top part of the intake manifold , They like to leak ! Leaking Fuel Pressure Regulator

2001 Chevrolet... | Answered on Apr 14, 2015


The transfer case has 2 plugs in it ,one above the other. Remove the upper plug and dip your baby finger in the hole. If it touches fluid, the level is ok

2001 Chevrolet... | Answered on Apr 13, 2015


SOUND LIKE EVAP SYSTEM FAILURE.CAUSING EXCESSIVE FUEL PRESSURE VAPORS BUILT UP IN FUEL TANK.TAKE IT TO DEALERSHIP THEY HAVE TO USE DIAGNOSTIC EQUIPMENT TO FIX.THIS IS A LITTLE TRICK TO GET GAS IN TANK BACK OUT SPOUT A LITTLE NOT MUCH TO LET VAPORS ESCAPE WHILE YOU PUMPING GAS.YOU NEED TO FIX.FUEL PRESSURE VAPORS WILL BUILD UP ENOUGH TO BLOW UP FUEL TANK ESPECIALLY ON HOT DAYS.

2001 Chevrolet... | Answered on Apr 12, 2015


Make sure all your vacuum hoses are connected and in place, also might want to check out the pcv valve usually located on the valve cover. You can also have the fuel regulator checked out... hope one of these things takes care of your problem.

2001 Chevrolet... | Answered on Apr 04, 2015


Chevy dealership parts dept will print it out for you.

2001 Chevrolet... | Answered on Mar 23, 2015


Go the a Chevy dealership parts dept and get them to print it for you.

2001 Chevrolet... | Answered on Mar 23, 2015


See if it has the double stacked positive cable ends at the battery, Sometimes one won't make a good connection, 1 goes to the starter the other feeds the rest of the electrical system, Also check make sure your ignition switch isn't going bad, NOT the key and tumbler but the electrical switch itself...Make sure your starter wiring is tight also..

2001 Chevrolet... | Answered on Mar 11, 2015

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