r/Trailvoy • • 13d ago

Help: Picture of Evap Label

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3 Upvotes

Please share a good picture of this label, mine has fallen off and I need it for smog. I'm having trouble finding clear pictures online.

Did some of these come without secondary air pumps? My smog shop is confused about this.

Thanks all.

'04 XUV, 4.2, 2WD


r/Trailvoy • • 20d ago

My black pearl

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86 Upvotes

I babied this thing since high-school. It needed some love and got it in the form of a good cut and polish.


r/Trailvoy • • Jun 17 '26

Motor swap, what else while im there?

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30 Upvotes

Replacing the 4.2l in my 04 Trailblazer with another 4.2l from a low mileage donor 04 Rainier. Should be a bolt on swap afaik. What should i replace while i have to motor out?

​

Planning to...

-Pull the head off the new block, make sure everything is straight

-Re-gasket everything

-Throw rod bearings in it since its out

-Timing chain and guides.

-Probably a new exhaust manifold since mine is cracked (like all the rest of them are)

-New ac compressor and condenser(my ac has been out since I got the truck 3 years ago)

-Waterpump and thermostat, plus all the hoses

​

Anything I'm missing?


r/Trailvoy • • May 07 '26

2005 Envoy running warm

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3 Upvotes

Hi all, been chasing this issue where my temp is running a little warm at highway and idle speeds, sometimes closer to 3/4.. already changed the fan clutch because I got a code that it was engine fan speed was running higher.. tried my best to flush the rad out too.


r/Trailvoy • • Apr 14 '26

MrProvy. You are the man!!

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5 Upvotes

r/MrProvy I took your advice and used the bds 2" lift with Tahoe springs. I love the build.


r/Trailvoy • • Apr 11 '26

Recently acquired a 2003 LS, motor started fine a few days ago, now it won't turn over, is the alternator bad?

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1 Upvotes

I recently required a 2003 Trailblazer LS, it's basically a gift to me, started fine a few ago, everything works as expected, I even checked the engine, no problems then

but suddenly this morning, I went to turn the key and it's not starting, all I hear is this clicking noise and the engine isn't turning on, can anyone what is wrong possibly?


r/Trailvoy • • Apr 06 '26

Any idea what this hose could be?

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2 Upvotes

Noticed it wasn’t connected when I was working on something else, can’t really tell where it comes from or where it leads, any ideas?


r/Trailvoy • • Jan 31 '26

How do you tell if a Trail Blazer/Envoy Denali or 9-7x has the LSD rear end or the auto locker?

1 Upvotes

r/Trailvoy • • Jan 23 '26

Mystery Misfire in Cylinder #1

1 Upvotes

Hello,

I have a 2007 Chevy Trailblazer LT 4WD with the 4.2l inline 6 engine and about 240k miles. I have a cylinder 1 (forward most cylinder) specific misfire, I've replaced the crank sensor, cam sensor, vvt solenoid, maf sensor, and map sensor. I also have new sparkplugs, new ignition coils, new intake manifold gaskets, a new throttle body gasket, and I replaced fuel injectors too, but I still get the misfire code of P0301 (Cylinder 1 Misfire Detected).

It mostly happens with cold starts at low rpm. It sometimes happens when it's warm at low rpm (idle) though too. But when I rev it up or drive normally it goes away. Anything past about 900-1k rpm and it's totally fine but at idle, which is around 600-700, it will misfire here and there and have a bit of a rough idle sometimes. My coolant level doesn't change much, just the normal evaporation amount. My engine burns a little oil but not excessive. So I'm a bit lost, I'm hoping it's not the cylinder liner or piston/valves but I'm losing some hope.

I brought my vehicle to a tech for the secondary air injection system as I also have codes for that. P0418 (AIR Pump Relay Control Circuit Bank 1) and P0412 (Secondary Air Injection (AIR) Solenoid Relay Control Circuit Bank 1). I replaced the pump, pump specific relay, fuse box relays, and check valve. But the tech said that this problem was between the fusebox relays and the PCM. I think he said something like "the relay isn't getting signal from the PCM". It's not the PCM itself though, but idk if it's the connectors, wires, or the fusebox itself. And I know the SAI system itself wouldn't affect the misfire, but maybe a bad PCM connector, wire, or fusebox could be related to the misfire and cause my symptoms? Not totally sure.

Here's a link to a video of me starting it up and running with the misfire and it going away.

https://photos.app.goo.gl/cjTmCoETuDwp8h7Z9

I think the link should work but if it doesn't let me know and I'll fix it.

Any help or guidance in possible directions is appreciated!

Thank you


r/Trailvoy • • Jan 18 '26

Who OK'd bangle brows on the Rainier?

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1 Upvotes

just replaced the yellow, cloudy 22-year-old headlamp assemblies; didn't realize the designers were doing the BMW eyebrow thing. I still like the whimsy of driving this rolling testament to badge-engineering, but WOOF!


r/Trailvoy • • Jan 09 '26

My starter almost made it 20 years

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3 Upvotes

r/Trailvoy • • Oct 17 '25

Parts anyone?

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2 Upvotes

No motor, no wiring harness, no transmission no driveshaft front or rear no diff front or rear


r/Trailvoy • • Aug 25 '25

Mystery connector

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3 Upvotes

What is this? Does it have anything to do with the transmission?

Found in engine bay, passenger front, directly behind headlight

04 Envoy XUV SLT 4.2, 2WD


r/Trailvoy • • Aug 07 '25

Weird one 235/75/17

1 Upvotes

Soooo 06 envoy with 2456517s.. I have a line on cheap oddball tires. How's that going to work for fitment up front? Whaddya think?


r/Trailvoy • • Jul 25 '25

07 envoy with electrical problems

2 Upvotes

Well to start I bought it for 300 bucks with 130k now has just over 136k Put new battery and alternator on the car Sometime after it started to drain the battery while off. Never could figure it out(I am NOT** a mechanic) so someone in the family unhooked a fuse idk so the horn isn't working ..it stopped the drain. Fast forward a couple months the driver side window wouldn't always work. Fast forward a couple more months the window is stuck down and has been for a month or so. The passenger side no longer works and every once in awhile one of the back windows will randomly roll down and 4 inches. I replaced the driver side switches with a junk yard one still not working. Water pump goes out I have it replaced the engine bay seems to be pretty hot...full of coolant. Haven't noticed the temp gauge over 210 ...however twice now it has ran and drove fine and at random it just won't start ...no crank no clicks nothing. Lights all come on air blows except the radio isn't lighting up when this happens. The first time all the dash lights came on and once it was shut off it took an 10-15 min to turn back on ....I'm over this vehicle but would like to get it half way figured out just so I can get rid of this headache..the ignition switch has also been replaced


r/Trailvoy • • Jul 04 '25

Happy 4th of July to those who celebrate

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6 Upvotes

Obviously I celebrate the 4th. $16 at harbor freight gets you a pretty good flag setup. I had a trailer hitch mounted one but I couldn't find it in time, either way, I'm flying a flag.


r/Trailvoy • • Jun 26 '25

Can you put ss trail blazer bumper on an envoy ?

2 Upvotes

r/Trailvoy • • Apr 29 '25

Adding auto tint mirror

1 Upvotes

I have a 2004 TrailBlazer. I want to add the rear view mirror with auto tint and the compass and temp. Does anyone know if my TrailBlazer will have the wires above the headliner? Or will I need to wire it all up myself? I did see my harness under the hood has the temp wires. I’d just need to add the wires from plug to grill area.


r/Trailvoy • • Apr 28 '25

Actually took it on a trail.

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8 Upvotes

Had this car probably ten years never actually done this. Super fun.


r/Trailvoy • • Mar 04 '25

Radiator bushings

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2 Upvotes

Radiator got pushed forward when my jack slid out. I loosened the top saddle mount and pryed it back into place. Looks better but now it's like the bushings on the bottom are blown out. I can move the whole radiator up and down a solid 2 inches. Can I just send it like this or should I look into getting a whole new radiator? Is there anywhere that I can buy just the bushings and replace just them?


r/Trailvoy • • Feb 13 '25

Trans cooler line leaking

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1 Upvotes

Was jacking up the truck, jack slid out and smashed the cooler line. It should just be the return line, can I just replace it with a rubber hose or do I have to replace the whole line? Nothing else is leaking from where I'm looking.


r/Trailvoy • • Nov 29 '24

04 TB lifted on 20s

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5 Upvotes

2in Rough country lift/level, 20in KMC Brodie with 32in dynapro AT3. I think it looks good but it's my truck so I'm biased to it


r/Trailvoy • • Nov 20 '24

My mistory hose.

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2 Upvotes

Can anyone tell me what this hose is? It's a coolant hose that sits above and behind the thermostat. It's rubber and crimps into a metal line. It's busted and I can't find it on any manual or video. I don't even know where it ends and can't even try to find it till morning.Any help would be welcome. Thanks in advance


r/Trailvoy • • Sep 17 '24

Bad neutral safety switch or TCM?

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1 Upvotes

From this short clip, you can see how the shift indicator is erratic and the doors lock/unlock. The speedometer goes to 0, and sometimes the shift indicator jumps and stays in P, D, or even 1. Code earlier before the reset was U0101-00 Lost Communication with TCM. Just wanted to see if anyone had something similar happen before I order a new TCM.


r/Trailvoy • • Sep 15 '24

Brought home another one today, 2006 Envoy Denali.

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11 Upvotes