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Professional Automotive Repair Technical Discussions for September 23, 2016 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2005 Cadillac SRX 3.6L Crankcase Pressure VIN: 1GYEE637X5 Vehicle went another repair facility a few months prior to this visit. Customer was told p0420, "other codes" and similar driveability issues were due to Catalytic converter "needing adjusted" and that the would do this for customer, but that vehicle might beg... |
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| 1995 Chevrolet K3500 Cheyenne 7.4L No Start, Poor Idle Quality, Stall VIN: 1GCHK33N6S This truck is killing me... It started life as a diesel, but has been converted to a 454. Came in as a no start. I found TBI harness shorted to filter spacer and ECM fuse blown. I replaced ecm 1 fuse truck ran but had one dead injector. Replaced both injectors... |
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| 1999 Chevrolet Tahoe LS 5.7L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1GNEK13R1X In the past 2 years I have had tune this thing up (plugs, wires, cap, rotor and wires A/C Delco), Replaced pcv valve. replaced fuel filter. Came back a few months later. Misfiring again replaced PCV valve, fuel injectors (spider type) and crankshaft position s... Trouble codes: P0300 (Random misfire) |
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| 2007 Chevrolet Impala LS 3.5L MIL Lamp on VIN: 2G1WB58K77 smoke entire system did not fin a leak. so I changed purge valve because of tsb . came back with same code smoke again no leak Trouble codes: P0455 |
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| 2012 Chevrolet Silverado 3500 HD LT 6.6L MIL Lamp on, dic warning messages VIN: 1GC3K0C86C This truck is a commercial vehicle that gets a lot of use. It came to me with the Check Engine light on, and these messages flashing in the DIC in dash..."Service Emission System" and "165 miles to 65 mph maximum speed" I hooked a scanner to it (Solus Ultra)..... Trouble codes: P229E, P22A1, P22A0 |
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| 2013 Chevrolet Express 2500 6.6L Rear End VIN: 1GCWGFCL6D Strange noise coming from rearend replace rear brake pads,rotors,calipers and rear u-joint changed rearend oil dident help run it without axles in it still makes noise when it makes noise has slight vibration it will bog engine a little bit turned front yoke w... |
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| 2002 GMC C7500 Topkick C7H042 8.1L Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1GDJ7H1E22 Hesitates on throttle seems to misfire under load will not bring vehicle up to speed all exhaust readings Right bank Left bank seems OK since we are not able to drive cruise measurement is at 2500 rpm Trouble codes: P0154, P0200, P0500 |
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| 2004 GMC Sierra 2500 HD 6.6L MIL Lamp on VIN: 1GTHC23164 Replaced egr VACUUM pump and P0404 dtc remains; do we need to change out the EGR valve as well or the EGR pressure sensor? After looking into issue a bit more the EGR valve and vacuum pump are common fixes - but we have changed out the EGR vacuum pump already ... Trouble codes: P0404 (Exhaust Gas Recirculation A Control Range/Performance) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2008 Cadillac SRX 4.6L MIL Lamp on VIN: 1GYEE23A88 the shop that sent me the car found out that this is a California car and that dorman said that the convertor was not for this car. the intake leaks did get the fuel trims in order and the mode 6 shows the cat to be really close to not setting the codes. I wil... Trouble codes: P0430. |
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