Chevy TrailBlazer GMC Envoy Reduced Power Mode
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- Опубліковано 2 жов 2024
- 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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Straight to the point no B.S . explained clearly , great thanks
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!
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
Yes its a really neat tool for various size fans. You can find them fairly cheap also.
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!
Hope we get some nice weather soon! But no heat waves!!
Sending you some blue skies and hot weather from The Bahamas 🇧🇸 🌅⛱️🌝
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 👍👍👍
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.
They seem to go and go.
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
Did you try a compression test on that cylinder??
@@Mschasz3129 yes all cylinders were good
Injector pulse? Cam lobes?
@@ThecardoctorTV thanks man, I'm gonna check it out
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.
I fix My problem, tankyou bro
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.
Thank you! Ill send some snow your way so you get a change of weather from your rainy spell.
@@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.
Looks like good fun.....but thanks always good to know .......cheers
Thank you for checking out my vid.
😅
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
Replace the blower motor and module with OE parts.
Thanks for the suggestions, 👍
My problem is my 05 Trailblazer has/gets no oil pressure when it's warmed up!
Has pressure when cold. Any ideas???
Good video buddy 🤘😎
Thank you!
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
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
I used to have it out on less than 10 minutes
Wow. Impressive.
It helps to work in a gm shop
Nice diag & repair!
Right now is working only on 3 speeds.
Thank you!
Glade to see you!!!
Hvac module
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?
What is the charging system voltage at idle?
My 2007 chevy trailblazer is jumping rpm around 45/50 mph im woundering if you might help me and tell me whats going on she throws no codes
mines doing the same thing around 60mph it's probably a transmission issue
It was a long winter dam global warming lol.
Check the fuse first
Could it also be you need engine valve lifters?
Valve lifters can fail.
@@ThecardoctorTV Thanks
👍
So a fan clutch can cause low power?
Yes.
Have code p0017
I have a vid on that
Have to check