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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 7, 2019
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Open Help Requests for GM
Help Request Answers
2003 Chevrolet Silverado 2500 HD 6.6L Transfer Case VIN: 1GCHK23193
Looking for verification if I'm on the right path. Snap On Diagnostics is identifying the transfer case for this vehicle as an NVG-263-NP1 transfer case. The wiring diagrams from Alldata also matches for this transfer case. The complaint is that it won...
2013 GMC Sierra 2500 HD SLE 6.6L Excessive Emissions VIN: 1GT02ZE86D
This is a State truck. Standard maintenance and DEF refills. It came to us with WARNING EXHAUST FLUID QUALITY POOR 55MPH in 20 Miles. WARNING LEVEL 3 We had codes for NOX sensors and P20EE replaced both sensors reset both NOX sensors and perform RFQ...

Fixes & Summaries for GM
Fix/Summary Answers
1994 Chevrolet K2500 Suburban 5.7L Poor Idle Quality, Cuts out, Misfire VIN: 1GCGK26K6R
Thanks for all the help. I was able to get rid of the intermittent miss/almost stall, by setting the base timing and cutting out the bad connection at the EST connector (failed ohm test). First I finally replaced my bad timing light. I set base timing. Problem...
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