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Prev Professional Automotive Repair Technical Discussions for December 17, 2013
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1994 Chevrolet Blazer 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNEK18K6R
truck came in in tow truck, from another shop, talked to customer and he stated took truck to chevy dealer, told him that need it to start with complete tune up, customer declined because dealer will not promise that tune up will take care of problem, i notice... Trouble codes: 33 (map sensor vaccum too high), 44 (lean)
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2000 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNCT18W9Y
I'm having a severe issue getting this EVAP system fixed on this Blazer. This all started out with a P0446 vent code. Tested the vent and it stuck as normal, so I replaced it with a Dorman piece. After that, it started throwing a P0442 (small leak) code. I loo... Trouble codes: P0446
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2000 Chevrolet C2500 5.7L power streeing VIN: 1GCGC24R7Y
This truck came in with the power steering inop. It ws soaked with power steering fluid but I didnt see anything dripping. Power steering reservoir was full and it wasn't making any noise. Knowing these pumps have a lot of problems with shafts breaking, I repl...
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2006 Chevrolet Trailblazer LT 4.2L Misfire VIN: 1GNET16S46
Thank you for reading this, I have a misfire at idle on number 6. I have smoke checked for vacuum leaks, Ramp tested coil and injector. Swapped coil and plug with cylinder #2 and it didn't change. Fuel pressure is at 60 PSI. Performed a fuel injector balance t... Trouble codes: P0300
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2007 GMC Sierra 2500 HD Classic SLT 6.6L Stall, on first start up VIN: 1GTHK23D37
customer has come in with a problem that the truck stall at first start up and has a hard time starting it after ,but will start . i took the truck home to test and problem did happen it felt like the truck is not getting fuel at first start up , it just happ...
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1996 Oldsmobile 88 Royale 3.8L Poor Idle Quality VIN: 1G3HN52K9T
This car has a high idle. It will go as high as [...] at times. The scan tool shows the tp sensor voltage fluctuating any where from .35v to .47v fairly rapidly. The tp % is from 0 to 3% fluctuating also. If you disconnect the tps sensor idle is perfect and...
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Fixes & Summaries for GM
Fix/Summary Answers
2006 Cadillac CTS 3.6L Misfire VIN: 1G6DP57756
I found 0 compression in #1 cylinder, over 100 psi in #3 & #5 cyls. After consulting with my customer, we are going to get a price on a used engine. Trouble codes: P0300 (Misfire detected), P0301 (Misfire detected cyl 1), P0302 (Misfire detected cyl 2), P0128 (Coolant Temp below thermostat regulating temp), P0303 (Misfire detected cyl 3), P0304 (Misfire detected cyl 4).
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2005 Chevrolet Silverado 1500 5.3L Poor Idle Quality, Misfire VIN: 2GCEC19T65
Customer decided not to pursue repair, he replaced spark plugs and wants to try that and see what happens. Weather has warmed up now, have a feeling when it gets cold again we will be talking. I really appreciate everyone who took the time to respond. Thanks ... Trouble codes: P0300.
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