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Prev Professional Automotive Repair Technical Discussions for February 17, 2015
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1988 Chevrolet K3500 Cheyenne 7.4L electrical VIN: 1GCGK34N0J
Hi Guys i would appreciate any help with under hood electrical diagrams of connectors and relay locations i replaced the engine harness with one from a 89 chevy ct 3500 4x4 7.4l vin# [...] the 88 had a under fire and everything was destroyed my 88...
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1996 Chevrolet Monte Carlo LS 3.1L Excessive Emissions VIN: 2G1WW12M7T
This vehicle has many miles on it, has multiple P0441 trouble codes. The exhaust back pressure has been checked and is within normal readings. The purge valve and switch have been replaced twice and it comes back in a month later with P0441 trouble code, the v... Trouble codes: P0441 (Low Purge flow detected)
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2008 Chevrolet Avalanche LS 5.3L #7 spark plug VIN: 3GNFK123X8
This truck had a cam and lifters replaced at the dealer approx. 2 yrs ago.It has shortly after that developed this situation.It is eating the porcelain on # 7 cylinder.We have also encountered a po171 code on that side.We have verified the injector electricall...
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1992 GMC Typhoon 4.3L Poor Idle Quality VIN: 1GDCT18Z8N
When engine is at operating temp, it idles rough. Ignition looks good on the scope. While monitoring with a modus, map sensor doesn't look right so I add vacuum with a hand pump, and smooths out fairly well when I supply the sensor with 10 inHg. With key on en...
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2005 Hummer H2 6.0L driver mirror VIN: 5GRGN23U05
Help Hummer techs! This H2 was in for regular maintenance (plugs, wires)- after picking up the customer states the driver mirror will not tuck in when button is depressed. we found the passenger mirror to function properly but the driver mirror glass tips down...
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1998 Oldsmobile Cutlass 3.1L No Start VIN: 1G3NB52M9W
Hello all, thanks in advance. Guy came in for an oil change and said he wants a battery, hard to start. change oil test battery, battery 6 years old and tests to 25% on our basic tester. When start it up to check for leaks etc. from oil change notice its a cra... Trouble codes: P0440, P0507, P1404
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2003 Saturn Vue 2.2L slave cylinder VIN: 5GZCZ23D23
Clutch slave cylinder keeps binding up after a few days of driving. Complete clutch master with all lines to clutch slave cylinder have been replaced twice, clutch kit been replace twice with world pac parts
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Fixes & Summaries for GM
Fix/Summary Answers
1994 Chevrolet Astro CL 4.3L Surge, Stall, Misfire VIN: 1GNDM19W8R
thanks for all the replys most hit it on the head. the pressure regulator. we also replace the two inner fuel lines while there. van runs great. thank you again
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2012 Chevrolet Silverado 1500 LTZ 5.3L 6-5-3 downshift VIN: 3GCPKTE71C
Thank you for the replies, I think Steve has hit the nail on the head, Customer will talk to dealer and see if they can offer any help. If not I am sure I will get a shot at the repair.
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