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  1. 2

    My current fuel trims - idle, 2000rpm, 3000rpm all no load

    Here are three graphs of my current no load fuel trims, idle, 2000rpm, 3000rpm. Why does the LTFT go up to 15-16% just because the rpm went up? The graphs span about 45 seconds. I don't have any codes showing up but I don't like this. Idle 2000 rpm 3000 rpm
  2. 2

    Oil Pressure Sensor/Screen Replacement

    Lately (along with other issues) I've noticed the oil pressure gauge sometimes reading erratically and yesterday it bounced to 80 and back down a couple of times. I think this is a sign the oil sensor is going out - strange because I replaced it 2? years (10k miles) ago. In any case it seems...
  3. 2

    CEL came on yesterday, 2006 ODB trouble codes

    Right now this is a general question. The CEL came on yesterday (180,000 miles) and I plugged in my reader and found a whole bunch of P codes under drivetrain. A bunch of O2 sensor codes (bank 1,2 and pre and post cat) and a number of transmission codes. There were others but I thought those...
  4. 2

    Thermostat Not Closing All the Way?

    The other day I drove over Sonora Pass CA. On many of the downhill sections I noticed the water temp. dropping a considerable amount (to the quarter point, 150F?). It was not very cold outside (50F). I don't recall any issues in the past with the cooling system able to keep the engine at a...
  5. 2

    Steering Center Link and Steering Box Questions

    I have a slight loose feel in the steering wheel when hitting certain types of bumps. I have installed the intermediate steering shaft and have new front wheel bearings. Today I was under the Tahoe and pushing and pulling on things trying to find the cause. I found two things so far: 1 - the...
  6. 2

    2006 5.3 2WD Tahoe missing going up hill sometimes

    My 5.3 only has 171k miles. I got it at 100k miles and have been keeping up on the maintenance. The plug and plug wires are about 65k old. In the last year or so it feels like I'm getting a definite miss going up hill at freeway speeds at medium to heavy throttle but not enough for it to kick...
  7. 2

    Getting new rear axles - should I change from Gov bomb to Truetrack?

    Hello again, 2006 5.3L 167k miles. About 44k ago the rear end carrier bearings were replaced and the tech said the axle bearings were starting to go but I could keep driving it. It is now leaking a bit more and getting on the parking brake shoes on one side. So it is time to renew the axles...
  8. 2

    Which power steering fluid?

    This should be easy.... I was going to order power steering fluid on Amazon and it indicated AC Delco PS fluid is not compatible with my 2006 Tahoe. That's what I've used before. I started looking around e.g. RockAuto lists only Prestone. However that is listed as sold out. Of course many...
  9. 2

    New upper radiator hose collapsed ?

    Hello, Day before yesterday I replaced the upper and lower rad. hoses and heater hoses and fittings. Of course drained the coolant and replaced with DexCool. This morning I went to check the work after a drive yesterday and I noticed the new upper hose was flat as if things cooled down and the...
  10. 2

    Correct Fleet Runner Belt for 2006 Tahoe?

    Hello again, I figure it is time to change the AC and acc. belts. I want to use the Gates Fleet Runner model for both belts. They are supposed to last longer. Vehicle is 2006 Tahoe 5.3L non-Flex fuel with 105A alt. It seems pretty easy to find the correct belt for the AC drive. K040378HD...
  11. 2

    Embarrassing - only one OEM fender flare

    About 2 years I bought this 2006 Tahoe. I just noticed that one wheel has a flare what looks like the OEM B71 flare option. It is embarrassing that it took years to notice. A couple of questions: - is the flare pictured below the B71 or flare option? - if you get the B71 option (if that is...
  12. 2

    MPG improvement with spark plugs and wires change

    My 2006 Tahoe 5.3L, not flex has 123k miles. I got it with 100k miles and by the look of the plugs at 123k miles they were not changed. Prior to the change I noticed some hesitation in various conditions so I decided to change the plugs and wires. Before I made the change I took a 1000 mile...
  13. 2

    2006 Tahoe parking brake shoes installed DIY

    I decided to dig in and replace the parking brake shoes because I wasn't getting any holding effect when pushing the parking brake pedal down. In retrospect I probably could have just made an adjustment. Adjusting the parking shoes is a PITA because you need to remove the calipers. By...
  14. 2

    Bearing in diff. bad after 126k miles - see picture

    I was hearing a bit of a rushing noise, coming from the rear, that seemed to be per each tire revolution. It could have been the tire(s) or something in the rear end. I decided to have the oil changed in the diff. and have things inspected. They found a bad bearing between the pumpkin and...
  15. 2

    Clink/Clunk in rear during braking sometimes

    Hello Forum, In the last few days I notice a clink/clunk noise coming from the rear when braking easily at low speeds. Seems to be coming from the driver side. It doesn't happen every time I brake. The noise sounds like a hammer hitting a brake drum. Just yesterday the Service Stability...
  16. 2

    Installed all new shocks today

    The shocks came 2 x Bilstein 24-065009 's and two Sachs OEM self adjustable Nivomats. All ordered from Amazon. The Nivomats had the same Sachs model number as the originals. The install is straight forward. Just watch the usual safety stuff. I had two floor jacks so it was easy to get the...
  17. 2

    What are these - underside of engine (5.3L)?

    On the drivers side, back, lower part of the engine there are these items I'm not sure of: A - some sort of plug (water jacket drain or ? oil galley drain) B - same question as A C - small manifold/fitting that has nothing connected to it. If I feel on top there is a hole - can't tell if...
  18. 2

    Brake Caliper and Bracket Bolt Torque - please check my reading of the service manual

    In the 2006 Disk Brake Manual Front Guide Pin Torque 80 ft-lbs (seems high for that small bolt?) Rear Guide Pin Torque 31 ft-lbs Front Caliper Mounting Bracket to Knuckle - 129 ft-lbs Rear JC5/JH5 Caliper Mounting Bracket to Backing Plate - 148 ft-lbs Rear JH6 Caliper Mounting...
  19. 2

    What is this electronic device in my 2006 Tahoe?

    Hello Electronics Experts, I just got this 2006 Tahoe. I don't think Bluetooth was available in for 2006. I see this device attached at the cig. lighter hole. It does come out if I pull easily. What is it? I see it come on for awhile when I get in the car with my iphone. I'm thinking it...

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