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02 Tahoe P0300 code
Just an update on this - ran a complete diagnostics. Fuel pressure was normal. Cylinder 5 had over 20,000 misfires on record, cylinder 4 had 1500 on record. Replaced ignition coil on 5 and misfire is gone. Ordered another to replace 4. Check engine light is gone and car is running better. will...- Sarahwv
- Post #5
- Forum: Engine & Drivetrain
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02 Tahoe P0300 code
Thank you! Im now getting a code P1381. I did a crankshaft relearn but Im not sure it did any good. Ideas are VERY welcome lol- Sarahwv
- Post #4
- Forum: Engine & Drivetrain
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02 Tahoe P0300 code
02 Tahoe, 223k miles. 5.3 4wd. Changed oil on 5/4. Drove about an hour on the interstate 5/9, half way there it started misfiring. Code was P0300 random misfire and P0452 fuel tank pressure sensor circuit low voltage. Advanced recommended to replace fuel injector pressure regulator. Replaced the...- Sarahwv
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- Replies: 6
- Forum: Engine & Drivetrain
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4wd not working 2002 Tahoe
Just a quick update on this. We replaced the Transfer case shift motor and that seems to have done it. We're about a week into the fix and its running with no issues. Thanks for the advice, looks like we're fixed!- Sarahwv
- Post #8
- Forum: Engine & Drivetrain
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4wd not working 2002 Tahoe
Saw that, thanks!! Gonna look into the encoder motor but will also look as finding someone to check the codes. Our code reader doesnt run those codes but we have a friend that may be able to. Just gotta get him out here.- Sarahwv
- Post #5
- Forum: Engine & Drivetrain
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4wd not working 2002 Tahoe
Im not sure what else to do with this vehicle. We bought it from an old friend who never used 4WD. We've put a new switch (the part inside that push button switches from Auto, 4wd and 2wd), 4WD transfer case module and 4wd actuator motor. It will sometimes switch into 4wd but will not switch...- Sarahwv
- Thread
- Replies: 7
- Forum: Engine & Drivetrain
