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  1. General Discussion
    05 lly manual shift. For about 12 years the indication light in the dash has not worked but 4 hi and 4 lo works fine. I was able to but my gauge cluster into another truck to test it and the indicator light comes on. I'm unsure where to look next. I'm stumped between the 4x4 actuator on front...
  2. Gauges, Electronics and Wiring.
    I have a 2007 GMC Sierra SLT 2500 HD, having issues with the cab bus issue on both networks. It all started one day when I was driving down the road and I turned on the AC and all dash gauges pinned all down to there starting position (bottom left) got codes for no communication for BCM, HVAC...
  3. 2001 - 2007 (GMT800) Non Powertrain
    Hi everybody, I’m hoping someone may be able to help me with my problem. it all started in July, my 03 Chevy2500 hd Allison started feeling like it was slipping between 1-2 and 2-3 only when starting out from cold and it would get better the more you drove it. The instrument cluster also...
  4. Gauges, Electronics and Wiring.
    This is my first post here so I apologize if it's a little off, but to start, I've got a 2003 Chevy 2500 LB7. I've got a S476, 65 overs, stock CP3 (future upgrade), lift pump and built 900hp transmission with Starlite tuning. Before I put my turbo in, I noticed my truck would "slip" in the...
  5. 911 Problems Forum
    I’m new to the forum and found when wanting high idle on my 2003 lb7. I found a write up on how to activate the pto circuit... How to : High idle on '01 and '02 LB7, and did such only difference is other than using the park brake I ran switched and fused 12V to the pin on the ecu. It worked at...
  6. Gauges, Electronics and Wiring.
    Recently bypassed the EGR because it failed the truck has 240k on her. It sat in a field for a bit and low and behold I had a mouse nest under their fuse box. Couple of butt connectors and the truck started firing right up every time for about 30 starts. Went to give it a crank again last night...
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