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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 5, 2017
International Automotive Technicians' Network (iATN) - Members Only
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2013 Buick Verano 2.4L no crank VIN: 1G4PS5SK5D
Car towed in for no start. No lights on dash. Has push button start. If you disconnect the battery and connect it back up the dash lights will work. Has multiple messages on dash for all systems not working. When starter button is pushed everything goes dead. ...
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1990 Chevrolet C2500 Cheyenne 5.7L Poor Idle Quality VIN: 1GCFC24K3L
All of the sensors monitor fine on datastream. Oxygen sensor reading lean but reading. When vehicle is cold it idles fine and when it warms up and goes into a closed loop it will not idle and quit running. It will restart but quit running right away. When I di... Trouble codes: 44 (Lean exhaust)
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2001 Chevrolet Express 3500 5.7L headlamps VIN: 1GAHG39R51
Hi everyone, thanks ahead of time for any possible help. This very good customer of mine has been complaining about this problem for over a year now. Her complaint is that at times her headlamps will start blinking rapidly on and off as if you were turning the...
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2004 Chevrolet Express 3500 6.0L No Start VIN: 1GCHG35UX4
Van came in a few weeks ago with a no start. it would not start, but after sitting a few minutes it would start every time you tried until you let it sit for a few hours. had a p0335, replaced crank sensor let sit over night. started great next morn. sent on i... Trouble codes: P0335 (Crankshaft position sensor)
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2013 Chevrolet Suburban 1500 LT 5.3L Shudder VIN: 1GNSKJE74D
Please do not respond unless you read the whole issue and repair history. Vehicle just purchased by a friend of mine. Vehicle has a shudder/noise vibration(pretty rough) only under very light load. Only does it between 1200 to 2000 RPM. If you get off the gas...
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2005 GMC Savana 2500 4.8L high idle when warm VIN: 1GTGG25V55
Iv got a difficult to diagnose issue. When the vehicle is started cold, it idles at about 1250. After it just begins to warm up it goes straight to 2000-2500 in park, 1100 or more sitting still in gear. I have checked for intake leaks, replaced the aic, cleane... Trouble codes: P0507
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2007 Saturn Ion 2 2.2L Power assist VIN: 1G8AJ58F57
Good morning fellow Iatners. We have my mother inlaws Saturn Ion here with an intermittent loss of steering assist. We have 0 experience with electric power steering on these vehicles. Low mileage vehicle with no history of power assist faults. Sent to the Che...
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Fixes & Summaries for GM
Fix/Summary Answers
2007 Chevrolet Express 3500 6.0L intake manifold VIN: 1GBHG31UX7
received several replies asking about vacuum leaks or restrictions.Had already checked with smoke machine and fuel trim numbers were under 10 percent. had removed intake and replaced aftermarket gaskets with oe, no change. ended up installing aftermarket manif...
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2008 Chevrolet Cobalt LT 2.2L blower motor VIN: 1G1AL58F58
Cust. needs car for work can't leave will bring back after school is out he is a teacher.
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2004 GMC Sierra 1500 SLE 5.3L monitors VIN: 2GTEK19T14
Thanks to all who responded. I believe the truck has a bad PCM. All the powers and grounds check out good. The customer has declined repair at this time. Thank again for helping me confirm the problem.
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2008 Saturn Astra XE 1.8L MIL Lamp on VIN: W08AR67188
Smoked exhaust and no leaks found. Checked actual voltage at rear sensor and readings matched the computer data. Tried another post sensor and voltage now switching slowly between 2-4 volts and trim pid dropped down near 2%. Using Bosch scanner not tech 2 an... Trouble codes: P2096 (Post catalyst fuel trim too lean bank 1 short to ground).
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