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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 17, 2019
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Open Help Requests for GM
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1994 Chevrolet S10 Blazer Tahoe 4.3L Poor Idle Quality VIN: 1GNDT13W8R
customer came in about 6 months ago complate about running rough. the tech that looked at this vechicle could not find any codes OBD1 system. recommended plugs, wires, cap, rotor button fuel filter egr valve pcv valve throttle plate cleaning. vehicle runs ...
2000 Chevrolet C2500 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Misfire, Poor Fuel Economy VIN: 0999990099
2000 chevy c2500 5.7L Engine, computer, harness was swapped into a 81 Chevy k30. Emissions ie rear o2, evap, egr, all turned off. Engine has ran great for 4+years. Engine runs normal for about 3-5 min at 2500rpm then it starts to misfire loose power rpms w... Trouble codes: P0339, P0341 (Cmp sensor performance)
2003 Chevrolet Silverado 1500 5.3L monitor status VIN: 2GCEC19T03
Thank you in advance for any input. truck came in with a check engine light, has to go through emission lane soon. (two months ago). had a code for o2 sensor b1s1. replace it, cleared codes and instructed customer to drive it for a couple days and bring it...
2006 Chevrolet C5500 Kodiak C5C042 6.6L Low power uphill VIN: 1GBE5C1216
Y would like to get some help on this one, vehicle complaint is low power when pulling a trailer uphill,at beginning has a codes for glow plug #3 which we replaced and brake pedal sensor,test drove vehicle and feels ok without trailer no codes. Data seems ... Trouble codes: P0673 (Glow plug 3 control circuit)
2003 Hummer H2 6.0L Blower motor VIN: 5GRGN23U53
Installed they run continuously even key off. I am going to recheck but it appeared to have similar inputs. + - and the wire from the control head that changes volts, possibly duty cycle. The only difference is the Hummer measures about 2 volts higher thro...

Fixes & Summaries for GM
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