- no air coming out of the dash vents
- DTC P1515 Electronic Throttle Control
- Reset Computer?
- Turbos on Trailblazers
- New Envoy Denali Vibration
- What's this hose for?
- Which Oil Viscosity to use?
- Passkey Relearn
- Hoses
- water pump change?
- Trans-Dapt Throttle Body Spacer
- Will Saab 9.7x engine cover work on trailvoy 5.3s?? hmm....
- What next?
- A/C Related Engine Noises - Need Help
- 03' Radiator peacock?
- oil on plugs
- 210 to 230 degrees, is that normal?
- towing, need HP
- Easy ways to cool...
- Mysterious Overheating
- Radiator Additives??
- Towing...and trying to clear a few things up...
- Metal in front differential fluid.
- Problem with Truck after engine install
- Speed friendly dealers…
- Fan Clutch Failure Symptoms?
- Yet Another Fan Clutch Thread -- Semi DIY?
- Engine tick
- Hedman Header
- Best fan clutch replacement EVER!!
- Fuel Tank Question
- Royal Purple
- Dexcool !!!
- Engine back fires when revved
- Sad news TB in the stealership
- feels sluggish
- Simple Tweak?
- E85 Conversion Kits
- Happy 21st to me!!!
- Horrible Pinging!!! AHHHHH
- Ist gear
- Rear end Fluid from Dif ?
- Changing 4.2 to a 5.3 ???
- cv replacement
- Battery/PCM
- Diff
- Changed Sparks
- SES light....again
- newb with an 04 ls with fan question??
- Federal Emissions Warranty....
- New Plugs
- what do you hear from neutral to reverse
- Differential fill plugs...
- check engine light on
- acceleration difference w/ gear swap
- Where is the petcock on an '02 I6?
- Locking Differential?
- I6 Where to start??
- silly me
- I got lucky yesterday..... at least I think I did
- Noise Coming From Undercarrage Near Transmission Pan
- Transmission Slippage Question
- 04 TB with front differential leak
- 100000Km what to do
- Tires and wheels 05 TB
- Oil Filter Replacement on 2006 Envoy Denali XL
- Newbie ... with Q's about maintenance
- Chirp w/ Hard Acceleration
- so how bad did i screw up?
- OBD Results
- Oil Filters
- Oil Change Frequency
- Under Pullies
- Speed Limiter Still Active???
- Finally Ses Light Is Off
- Car would not drive
- Engine swaps? V8 in an I6 truck?
- Reduced Engine mode when at WOT!?
- Stick shift for 4.2L
- Service engine light and tires
- Engine Won't Rev Past 3300 rpm in Neutral
- 2002 engine recalibration
- called GM
- Relocating Oil Filter - Good Idea?
- Shop Recommendations
- Cool 2006 4.2L pic...
- Mobil 1 for Trucks and SUVs?
- weird gas leak
- V8 question?
- New Mod Gtech Installed
- Oil in spark plug hole
- Mobile 1 Oil filler cap
- Nasty front differential oil!
- Radiator Cap Leaks
- Engine Stalled today
- throttle body - please show me..
- I need more power for my I6
- Knocking/Tapping Noise
- 3.42 to 4.10's
- Knocking noise from front of engine - Waterpump Failure
- Mobil 1
- check engine light help
- First car of mine that can't turn right.
- 4.2 I6 horsepower question
- Oil filter install, who done it?
- Hello & question
- Water temperature spike post waterpump replacment
- Rear differential drain/fill w/ pics..
- Spark Plug Confusion
- 4.2 issues
- Any updates on a 5 speed?
- Lets talk axle gear ratios... still alittle confused
- 4-wheel Drive Working Again
- 6.0L upgrade?
- 4.2 I6 different from LS1?
- Shell 87 Octane - Engine Problems
- Shudder, Rocking Motion, Binding, Feels Like Vehicle is Stuck in 4WD
- Head work ?
- nice service this time (so far)
- Motor Oil Amount
- Turboing the I6
- Help-Transmission, Differential and Transfer Case Service
- Jiffy Lube pros not, wrecked my Sh#t !
- Oil Life Estimator
- Tune places on Long Island?
- SES LIGHT!! CODE P1345... Lemme know what it is
- Who designed the 4.2L?
- Speed limiter
- About tune up
- Has anyone had to change the battery in their TrailVoy?
- new tb ext need ideas
- Make your own SS
- Need any and all ideas...(Please)
- wishful thinking
- Need to add LSD/Locker
- No Start Condition...
- 5w30 vs. 10w30
- Tune Up?
- fan clutch
- sound
- Envoy XUV V8 5300 4x4
- Confused - Types of CAI's
- CV joint making noise in 03 TB anyone DIY
- 02 'Voy front wheel problem
- engine not running right
- New 04' Tb
- Kinda concerned
- Oil change.
- Looking...
- New ECM for 2007??
- Traction Control Help
- Oops! Broken sensor
- How badly do you guys wanna rev to 6K when not moving :P
- oil residue around head gasket cover
- tuners
- does anyone
- fuel inconsistancy
- engine bay ,unknown wire question
- Loud, noisy fan stays on while driving, running sluggish.
- And thats how much power it gave me!
- noises
- Got a new truck!!
- spark plugs??????
- Differential fluid change
- Need PROS and CONS
- Help! what trans filter do I get?
- Oil Sample
- what kind of spark plugs?????
- 4.2l??
- low rpm's
- Leaking green grease
- Pics Of My Spark Plugs???
- When to drop in the tune
- "low engine power" light, bad PCM ???
- Leaking from transfer case! Need advice
- Scan tool info?
- Project "V8 Wakeup" is beginning!
- Engine Knock
- Transmission
- Wheel turned to lock=engine dies
- Drivetrain "Clunk" While Decelrating
- Calling on all 2006 Trailblazers owners (non ss)
- Took her to the dealer
- 5.3 or 6.0 swap info
- 05 Envoy whining noise
- stange sound???
- 02 oldsmobile bravada
- Ok you got me... whats the trick
- 85 Octane, 87 w/10% ethanol or 91?????
- Did the first oil change yesterday...
- Don't try this at home, please.
- Tb didn't want to start
- Oil Changes
- Traction Control
- Burning oil while towing
- 06 Envoy Denali MPG
- changing a/c compressor?
- First Year for Variable Displacement?
- Driveline noise when rolling forward - Universal Joint?
- Removing the oil filter- Question
- Engine block heater
- Who's found/installed new headers?
- Sifting sound when shifting gears???
- Hesitation When First Started
- 2005 ecu on 2004
- Special Policy Adjustment for 02
- Sudden Battery Drain?
- Does anyone have dyno numbers from different mods???
- Yeah BOYYY!! I6 Header
- Efan time for an I6 TB??
- pulling a boat
- High Oil Pressure
- Serpentine belt- when to replace?
- Clunking noise
- Change Engine Oil Light?!? Help
- Need Help Code 1481 What Is It ?
- $4000 repair bill !?!? in Detroit area.
- To Pull Or Not To Pull
- ready to sell!!!!
- 02 TB Fan Clutch?
- Advantages of synthetic over fossil
- Cleaned Up some drivetrain parts but still leaks!
- Removing Spark Plugs, 111k miles, Original Sparkers.
- Dyno Time
- Pulsating felt in gas pedal
- too small cable?Attn: electricians
- decisions decisions tahoe or suburban
- Lucus?
- towing to utah BOOO!!!
- 02 Trailblazer Fan Clutch seal leak?
- Thanks to ieatglue TB cleaned !! **photos**
- rear shocks OMR?
- Ironic ?
- Mobil 1 Syn - Really Works
- Deep water....
- Clunking Noise During Gear Change & Rattle During High Revs
- HELP!! cleand TB but 1000rpm !!
- First Oil Change
- klunk in reverse?
- Horse power chips?
- Really Stupid Question...
- Noise
- Cylinder Identification
- Coils!
- CV grease leak with good boots
- Need more power out of I6
- Is there an aftermarket ignition system for the I6?
- Tunes and shift point
- Dust = Corrosion?
- Oil Plug