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  1. MRRSM

    What are you doing today?

    You'll be amazed at what can happen when all they have to do is "Re-Play The Hard Parts" enough times to "Get It".... and as far as MOTIVATION goes... NOTHING worked better for both of my Children than having "The Mysterious Friday Surprise Box" to place all of the Small Goodies they mentioned...
  2. MRRSM

    "Hoping... For Loping..."

    It is NEVER Too Late to get more information In The Mix about Building Performance into your LS Engine. And so THESE Links are worth looking at as yet One More Decent LS Engine Builder's Resource. So I thought this YT Site called “The Driveway Engineer” would compliment what you are doing with...
  3. MRRSM

    Reoccurring ABS codes

    If your Transfer Case is the Model # NVG246 ... This Article in PDF may prove helpful due to the different "automotive semantics" being used to describe the components: View Page 3 0f 4 for the Targeted Information:
  4. MRRSM

    First time with HP Tuners, seeking advice for getting started

    The biggest consideration will be the Local Road Grades and whether your surroundings are well above Sea Level (say... Just Under Pike's Peak in Elevation with any Sketchy or lingering MAF issues) as these would come into play if you regularly Tow anything Fairly Heavy ...up and down such a...
  5. MRRSM

    4.2 Oil Prime

    Leave the Oil Pressure Sender alone... it's Large Metric Size and Thread Pitch make it inordinately hard to find Oil Feed Line Adapters for (M16 X 2.00 X 15MM ...Marked HERE with a RED X). Instead, use the Front Facing Aluminum Hex( H-8 (H-10?) Metric M16 X 1.50 Plug)... Marked HERE within the...
  6. MRRSM

    4.2 Oil Prime

    Unfortunately... with the advent of Crankshaft Mounted Gerotor Oil Pumps...that technique will no longer function. But ...Yes… It can and SHOULD always be used on Newly Assembled Atlas Engines and also with Motors that have been sitting for long periods of Dormancy where the Lubrication Gravity...
  7. MRRSM

    Can't Scan for ABS Code

    Even if you are still unable to read and access any "C" Codes, try following THIS Dude's ABS Sensor Diagnosis for measuring the ABS Sensor Alternating Current milli-voltages via a DMM - DVOM while simply Spinning the Front Tires by Hand ...Before and After... performing the Rust Clean Up of the...
  8. MRRSM

    What are you doing today?

    Re; Post # 15,781 ... @BrianF... If you want to have access to the personalized "Actual Black Board Instructions" using exercises in Mathematics that run from Pre-K all the way up to Differential and Integral Calculus and YOU as a parent want to steer and tailor these Videos for each of your...
  9. MRRSM

    Fuel (pump) for discussion

    Fair Enough... and if your were speaking strictly about basically Turbo-Charging your Stock LS Motor for Natural Oxygen and Pump Gas ...NP. But Nitrous Oxide is a Whole 'Nother Animal. FWIW... Check out the adjustments this Engine Builder follows after taking Two LS Motors that fell to 'the...
  10. MRRSM

    Reoccurring ABS codes

    Concerning the Replacement of the ABS Sensor-Harness... this is a very revealing Video on how the VOP (Video Original Poster) solved the ABS issue and demonstrates the use of a DMM - DVOM to examine the Alternating Current produced by the ABS Sensor Activation during Wheel Rotation: And here...
  11. MRRSM

    Shifter has play/not clicking when in gear

    There is one other consideration that will not be evident from viewing the Park Neutral Switch Image above: With the PNS installed on the Driver's Side of the 4L60E, the Two Electrical Harness Plugs (Green Arrows on the Attached Image) will naturally be installed. Their presence will obstruct...
  12. MRRSM

    Driver side valve cover replacement

    If this Strong Solvent were to seep into the spaces in between the Plastic Intake Manifold and the Combination Rubber "O" Ring-Press Cut-Out Metal Gaskets...it could soften and even dissolve away those seals and make for an even more complicated set of problems. I know that this will be a PITA...
  13. MRRSM

    Tesla Tru... What?

    Probably a good idea to read about what is happening now with Nikola via the Wiki on their situation with General Motors before making that leap... starting with most recent resignation of the Company Founder: https://en.wikipedia.org/wiki/Nikola_Corporation "On September 21, 2020, Trevor...
  14. MRRSM

    RPM Drop On Acceleration.

    The VOP presents with the same problem on his 2003 Trailblazer and one of the respondents suggested Changing The "Throttle Pedal Switch" (ACC Pedal Module ?) Since doing so, this Fixed his Problem.
  15. MRRSM

    First time with HP Tuners, seeking advice for getting started

    The effect of locking up the Torque Converter at low speed with the 4:10 Diff Gears would not be as hard as it would be with the 'tail end' at 3:43 more useful when trying to achieve a road speed of 75-80 MPH and having the Engine RPM settle out below 2,000 RPM. This must be the Thread that you...
  16. MRRSM

    Driver side valve cover replacement

    @C-ya ... Agree... :hijack: Sorry for moving it sideways on answering @Mike534x 's Questions. But now that I think of it, if you were not replacing your Old Valve Cover with the New, Modified One, spraying it down with the ACDelco TEC Foam and then wrapping it up inside of Saran Wrap, within...
  17. MRRSM

    First time with HP Tuners, seeking advice for getting started

    I might be wrong on this... But... IIANM... The Trailblazers and Envoys sporting the 4.2L 4L60E Transmissions came Stock with a 'very much in demand' Torque Converter that could handle the Additional Power from an LS Engine Cammed with the need for a Higher RPM Stall 'Sweet Spot'. Supposedly...
  18. MRRSM

    Coolant system failure spiral.

    Here is another Resource that comes from a Rare Diagnostic done by Scanner Danner that may also prove interesting regarding what things are supposed to happen at certain RPM Ranges as he Probes and examines the Harness and everything else in between:
  19. MRRSM

    Coolant system failure spiral.

    Part 2 of 2 Set of Images: Hope something of what is in here becomes useful...
  20. MRRSM

    Coolant system failure spiral.

    The attached JPEGS are images of the Diagnostic Flow Charts and practically everything else that has ever been mentioned on this issue, so it might mean that there will be some redundancies in the mix. @TJBaker57 has done a LOT of work with these issues and is an Absolute GENIUS with Electrical...
  21. MRRSM

    The COVID escape room

    This Clever and Funny Tune from Lonnie Donergan made the Top Ten in the Summer of 1960 in Great Britain and took the USA by Storm as well. It is an ABSOLOOT HOOT for the Young Kids to listen to and memorize as a sing along with whenever they Get Bored and have to stay Indoors on COVID Rainy...
  22. MRRSM

    Fuel (pump) for discussion

    I'm as enthusiastic as the next Member for all of YOUR Performance Enhancement Projects as you are... so I'm loathe to dampen your motivation here in the slightest. BUT... the primary considerations that needs your attention well before any thoughts about Augmenting the Power of The Motor using...
  23. MRRSM

    Cranks but won't start

    Small Suggestion... Having seen the amount of Rust Scale underneath your SUV... Trace the Ground Wiring from the Fuel Pump back to where it either attaches somewhere on a "B" Post or somewhere on the Engine Block and perform a De-Scaling R&R down to "Bright Steel" and apply some Dielectric...
  24. MRRSM

    First time with HP Tuners, seeking advice for getting started

    ...but remember that you'll have to confirm that your PCM Configuration changes are also in the ACDelco PCM Calibration List for the Power Train Control Module RPO Listings... or things may not look right once you write that calibration to the PCM. Take a "Snapshot" of your RPO Sticker...
  25. MRRSM

    NEED HELP upsized tires now traction control warning

    Also... if you are using either a "GYMKO" Tech 2 or some other Pass-Thru Device (J-2534) using a laptop with the proper software to access your PCM and perform an update to the PCM via a Subscription with ACDelco TIS2WEB Services... Consider this: After you complete your initial Hardware and...
  26. MRRSM

    First time with HP Tuners, seeking advice for getting started

    ...and if you want to work with your "Guinea Pig" 2002 P10 PCM while in the confines of your home with all of the requisite gear nicely laid out on a table... I've got a dedicated thread on "How to Create a Bench Top Test Harness for the Early Model LL8 Engine P10 PCM" that will allow your...
  27. MRRSM

    Fuel (pump) for discussion

    This is a Spot On Topic "Read" for what you are looking into doing right now: https://www.onallcylinders.com/2018/05/10/l76-6-0l-truck-engine-upgrade-guide-expert-advice-l76-mods-maximize-performance/
  28. MRRSM

    Driver side valve cover replacement

    Regarding the Speed of Evaporation, I would say YES if your choice of solvent was Berryman's B12 Chemtool Liquid for Fuel Injector Cleaning. That stuff is a horrendously rapidly evaporating VOC that should NEVER be used in a confined space or inside of a Closed Up Garage. In the case of the...
  29. MRRSM

    Shifter has play/not clicking when in gear

    Welcome to GMT Nation... The most important thing to understand about the Trailblazer Shifter Mechanism is the relationship between the Internal Steel Cable and its Outer Black Cable Housing: It is possible to have the Cable properly set into the Shifter Handle Housing near the Center...
  30. MRRSM

    Driver side valve cover replacement

    Yes... When Using the Foam Style Liquid In Quantity... This Method of using ACDelco Top Engine Cleaner is EXTREMELY Effective as the Best Carbon-Busting Method Imaginable. But you should not necessarily take my word for it. The Basis for WHY using this stuff every 50,000 or so miles can be read...

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