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  1. Knocking after Tahoe Shock & Spring Install

    TrailBlazer / Envoy Chat
    Hello all, i have a 3" Front and 2" rear lift. I added Tahoe springs and shocks last night. The Tahoe spring was about 1.25" taller than Envoy stock. The shocks were the same compressed and uncompressed lengths. I had to remove my rear 2" spacer as the height added by the new springs...
  2. Knocking noise at 70mph

    Engine Tunes/Mods
    A month ago Ive got headers install which was great btw, everything seemed fine except getting the engine code P0420 which was the high flow cats. I got it removed from the tune but the light still pops out. But that's not the problem. A month later Im starting to hear knocking noise for the...
  3. 66k time for a new crank???

    OEM Issues
    I havent had many problems with the denali, except for the bad rod bearings and crankshaft. ouch!! I could hear a engine tap right b4 shifts, or if i would rev engine in park. I immediatlly got sick in the stomach. jk.It only has 66k, thought these engines were bulletproof??B4 I panacked I...
  4. Engine/Spark Knock?

    OEM Issues
    I'm new to this so bare with me. I have a 2003 GMC Envoy sitting at approx. 96,000 miles, when I bought it in August last year it had 92,000. When we got it, it had a slight knocking in the motor, mainly when it was idling. Almost sounded more like a tap so I decided it needed better oil and...