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Chevy TrailBlazer GMC Envoy Reduced Power Mode

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Greetings viewers and welcome back to the channel. In todays production we have a Chevy TrailBlazer ( AKA GMC Envoy Isuzu Ascender ) that arrived with a customer complaint of an illuminated check engine light and reduced engine power warning. The vehicle had stored active codes U1000, P0452, P1221, P1271, P1635 and P1481. All related to a common 5 volt reference circuit of the powertrain control system. Come along for a quick tutorial on the diagnosis and repair for this common issue. Here is a link to the time saving video I mentioned in this vid: • Chevy TrailBlazer GMC ...
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Опубликовано:

26 авг 2024

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Комментарии : 53

@fredjones1238 Год назад

Straight to the point no B.S . explained clearly , great thanks

@flyboy2610 Год назад

That fan clutch causes a lot of REP codes! I fully agree with using an OEM clutch, or you'll be doing the job again within a year. Another easy way to diagnose it is to disconnect the fan clutch connector, and drive the vehicle for a while, making sure to keep a close eye on the temperature gauge! If the REP code does not come back, you've most likely found the problem. I've used your longer bolt trick when doing the fan clutch on my '04 TB with the 4.2 engine, and it works quite well!

@kennethbode2017 Год назад

160K on my Trailblazer. On water pump #3 but clutch is still working. That fan assy is a pain the butt to mess with. I like your special wrench for the big nut. I just used a chisel bit on my air hammer

@ThecardoctorTV Год назад

Yes its a really neat tool for various size fans. You can find them fairly cheap also.

@bernardaflores1720 Год назад

The snow surely looks crazy for May time frame. Here in the mid west, it is been cold until the past 2 days. Great video!

@ThecardoctorTV Год назад

Hope we get some nice weather soon! But no heat waves!!

@sherrygriffin9320 Год назад

Sending you some blue skies and hot weather from The Bahamas 🇧🇸 🌅⛱️🌝

@joseCalderon1976 9 месяцев назад

Grsat stuff! I'll put it on my Playlist for my 2003 chevy trailblazer with 195k miles. I just had the water pump replaced on it. I really appreciate your time doing these helpful videos! Subscribed 👍👍👍

@ILOVEBACONBOY2018 Год назад

I actually had a Ascender for a few years, it was actually pretty reliable and durable. 4.2 tho..easy and cheap to work on.

@ThecardoctorTV Год назад

They seem to go and go.

@thomastommy1192 Год назад

Great video thanks for sharing. Great to see you, Tim. Good luck with the snow. We are getting a lot of rain & cold weather still here. I think it will pass soon. Stay well & safe always.

@ThecardoctorTV Год назад

Thank you! Ill send some snow your way so you get a change of weather from your rainy spell.

@thomastommy1192 Год назад

@@ThecardoctorTV Thank you we could sure use it, lol. Maybe it will kill germs that are in the air. I always heard the first snowfall kills germs in the air, lol. I don't know how true that is. I hope you are doing well my friend. It is good to see you gain. Stay well & safe always.

@barrykruyssen Год назад

Great video. You are the Trailblazer/Envoy guru. I wish I knew the 2 bolt trick when I replaced my fan clutch last year (I did the "cut" hack). Can you please give more detail on the spanner and air gun you used to undo the big nut (I had so much trouble with that nut) Thanks for another great tutorial.

@erikarratia4903 2 месяца назад

I fix My problem, tankyou bro

@renebourbeau1671 Год назад

Looks like good fun.....but thanks always good to know .......cheers

@ThecardoctorTV Год назад

Thank you for checking out my vid.

@haywardsautomotive6156 Год назад

Nice diag & repair!

@josuearmijo764 Год назад

Right now is working only on 3 speeds.

@ThecardoctorTV Год назад

Thank you!

@jensenwilliam5434 Год назад

Glade to see you!!!

@CTMadModz Год назад

Good video buddy 🤘😎

@ThecardoctorTV Год назад

Thank you!

@BlessedLuke82 Год назад

Man I can't figure out the problem with my 2003 gmc envoy, I have a misfire on cylinder 2 and I've even changed the injector,and ignition coils and spark plugs, can you give me another idea of what I could check

@Mschasz3129 Год назад

Did you try a compression test on that cylinder??

@BlessedLuke82 Год назад

@@Mschasz3129 yes all cylinders were good

@ThecardoctorTV Год назад

Injector pulse? Cam lobes?

@BlessedLuke82 Год назад

@@ThecardoctorTV thanks man, I'm gonna check it out

@williamweber5368 Год назад

I used to have it out on less than 10 minutes

@ThecardoctorTV Год назад

Wow. Impressive.

@williamweber5368 Год назад

It helps to work in a gm shop

@user-sy2gp4gn7w 5 месяцев назад

My problem is my 05 Trailblazer has/gets no oil pressure when it's warmed up! Has pressure when cold. Any ideas???

@saladboy1841 Год назад

I know this isn't about your video but we're about to purchase a 04 GMC envoy cars in great shape runs and drives fine however for some reason and I am not an expert on the 4.2 at all but it sounds like a diesel motor to me is that normal it's got a rattle like a 12 valve Cummins kind of not to that extreme but same kind of noise but when you give it throttle it smoothes right out and their engine runs smooth any tips or suggestions

@josuearmijo764 Год назад

I have 2005 trail blazer problem with ac fan blowing speed ,I replaced at the, ac fan blower, control 3 times and work on all 5 speeds for 2 or 5 weeks and the problem, come back again, can you have some suggestions, please 🙏 thanks

@ThecardoctorTV Год назад

Replace the blower motor and module with OE parts.

@josuearmijo764 Год назад

Thanks for the suggestions, 👍

@user-kf7zg7kk1n Год назад

I do have 2003 olds mobil bravada i did replace throttle body new duralast my problem when the enginge start warming my Idle speed go 600 the my oil gage give me warning when i accelerate like 800 RPM goes to normal oil pressure switch was replace and i did flush the oil put new oil some reason my Idle goes low to 600RPM but ist not dying giving me warning please help thank you

@sherrygriffin9320 Год назад

I have a 2002 Trailblazer that's been very reliable, but when I started it up the other night, the dashboard lights all came on. The gas gage went to 0, the battery light, brake light, security light all lit up. The truck stay on and I got home with the dashboard light alternating between normal and everything lit up. A day later, it still start right up. So the mechanic doesn't fleece me, how easy a fix is this, please?

@ThecardoctorTV Год назад

What is the charging system voltage at idle?