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Professional Automotive Repair Technical Discussions for April 18, 2017 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1999 Cadillac DeVille d'Elegance 4.6L Backfires thru intak VIN: 1G6KE54Y8X When backfiring through throttle body, scan tool data shows bank 1 going very lean-injector pulse width higher than bank 2,stft higher than bank 2 & bank 1 o2 reads under 50 mv bank 2 readings appear normal no misfires indicated on scan tool data i unplugge... |
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| 2008 Chevrolet Suburban 1500 LTZ 5.3L steering angle sensor VIN: 3GNFK16338 This vehicle came needing left side motor mount. Tech needed to remove steering shaft to install mount. Now we have a traction control and stability service light on. It will also code CO710. So we changed the SAS we made sure it was centered and now the sas s... |
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| 2012 Chevrolet Equinox LS 2.4L Cuts out, Stall VIN: 2GNFLCEK0C Vehicle came in 3 weeks ago with same code. Ohm tested actuators: Intake 18 ohms Exhaust 12 ohms. Replaced intake actuator and changed oil. Came back last week with the same code and intermittent stall and dead spot on acceleration. Actuator at 11 ohms. Put 12... Trouble codes: P0011 (Intake cam actuator) |
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| 1997 Geo Tracker 1.6L MIL Lamp on VIN: 2CNBJ186XV This truck has a P0400 egr code. I have done a lot of reading on this system and it seems to be very problematic. I understand the EGR monitor to work like this. On decel from a steady cruise, the EGR bypass valve is activated applying full manifold vacuum the... Trouble codes: P0400 (EGR insufficient flow) |
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| 2004 GMC Safari 4.3L ABS Module VIN: 1GTDM19X74 I have this Safari with an ABS light that will turn on and off intermittently, or will stay on. The scanner will communicate with all other modules except the EBCM when the light is on. The PCM, Instrument panel, and SIR all have U1041 codes (Loss of EBCM/EBTC... |
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| 1997 Pontiac Firebird Formula 5.7L oil sending uni VIN: 2G2FV22P9V Have replaced engine; and now we're hunting for a leak in this area |
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| 2008 Saturn Astra XE 1.8L Hesitation, MIL Lamp on VIN: W08AR671X8 Hello, have a delayed throttle, reduced power mode, has a hard p2122 code, all voltage readings seem good, checked harness connectors at gas pedal and ecm, the vehicle is running normal for now, code sets right away after clearing any ideas ? |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2011 Buick LaCrosse CXL 3.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G4GC5ED6B Hey, wasn't purposefully not responding to this post for help, but I was wanting to make sure this car was good and fixed. Because it would often take a few days for the car to return, I wanted to wait and make sure it was cured. THE SHORT VERSION: I walnut b... Trouble codes: P0300 (Random Misfire), P0303 (Misfire 3), P0305 (Misfire 5), P0306 (Misfire 6). |
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| 2010 Cadillac SRX Performance 3.0L Hesitation VIN: 3GYFNEEY1A Yes the caddy is fixed and thanks to everyone that replied. So here's what I did. I tore it down one more time this time going slower and paying more attention. After installing chains I had 2 other techs come over and double check my alignment they said it lo... Trouble codes: P (0016), P (0016), P (0016), P (0016). |
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| 2003 Chevrolet Silverado 2500 HD 8.1L abs VIN: 1GCHK23G83 When the customer was told that when the master cylinder fluid level sensor was disconnected and the dash stopped displaying "Service Brake Syetem', he considered it fixed and did not want to go any farther. Sorry guys, but that's how the cookie crumbles somet... |
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| 2004 Chevrolet Silverado 3500 6.6L No Start, Poor Idle Quality, intermittent smoke VIN: 1GCJC391X4 I want to start off by thanking all of you for the helpful replies. I inspected all the harness and connector ends and couldn't find anything so i replaced the FICM, codes went away, but the white smoke at idle was present. I removed valve covers and the inlet... Trouble codes: P0370, P2146, P2149, P0201, P0202, P0203. |
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| 2006 Pontiac Grand Prix 3.8L electric ddo VIN: 2G2WP55286 To all. I checked harness power and grounds ok I have checked for bcm codes none found with tech 2. performed wiggle test of harness while activating doors lockes. tech 2 displays doors lock and unlock readings. Have not fixed it. Thanks for all your suggestio... |
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