2000 blazer 4x4 lost power to drivetrain going down the highway. No noise it just stopped getting power to the wheels. Coasted to a stop. No gear does anything. Engine drops in rpm a little when putting it in gear but nothing happens. Seems to be freewheeling almost. Revs down slower but not really slow or anything. Thought the transfer case chain went but then I would have 2 wheel drive still I believe. It's like the flywheel came unbolted. I don't have it home yet so just going though the research bit before I get it home today.

Answer: You are correct- if the transfer case chain broke, you would still have normal 2 wheel drive. If the engine has power, but not power to the wheels, then there are only a few things that can cause this.

1. The transmission had a major failure. If something broke inside the trans, then this would be the result. It could be anything from a valve sticking in the valvebody to a failed band or clutch pack or even a broken shaft. If something like that happened, you may not have even heard it when it failed.

2. The torque converter may have failed. This is the part that connects the flywheel to the transmission. If it has an internal problem, it would not transfer engine power to the transmission. This is not very common on the Chevy Blazer though.

3. The driveshaft or a U-joint broke. If that happened you would have heard a loud noise of some kind though.

4. A failure in the rear differential. If the ring gear or pinion failed, there would be power from the transmission to the rear end but it could not power the wheels. This may also have been accompanied by a loud noise when the failure occurred.


Leave your comments

Post comment as a guest

0

    Comments (1)
    Subscribe To These Comments-----   

    • Guest - Bill Stelling

      Thanks for the answer.. I had a feeling. Well after contently working on it over the last year, I am done.. Scrapping it. New truck time..

    Latest Articles

    Impala Flashing Engine Light

    I have a 2003/2004 impala i was driving it on the high way ...

    Hyundai Tucson 2016 A/C Blows ...

    2016 Hyundai Tucson. A/C worked great, parked the car for a ...

    Chevrolet Blazer Lost Power ...

    2000 blazer 4x4 lost power to drivetrain going down the ...

    Dodge Durango Timing Chain ...

    My 03 Dodge Durango 4.7L engine was blowing white smoke ...

    2002 Chevy Blazer Keeps ...

    My 2002 blazer keeps dying on me when I am driving, and ...

    How Things Work

    How To Check Engine Drive Belts - Routing

    Inspect your serpentine drive belt every 10,000 miles. Look for cracking. Small cracks are normal. Large, deep cracks are a sign that the belt should be replaced.

    Once you've determined that your serpentine belt needs to replaced you can search online for the specific part and have it sent directly to your home.

    View SERPENTINE BELT ROUTING DIAGRAMS

    Watch our CHECK BELTS VIDEO

    Read more...

    Common Engine Codes

    Knock Sensor Codes P0325 and P0327

    The powertrain control module (PCM) contains integrated knock sensor (KS) diagnostic circuitry. The KS produces an AC voltage at all engine speeds and loads. The PCM then adjusts spark timing based on the amplitude and frequency of the KS signal.

    Read more...