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Professional Automotive Repair Technical Discussions for September 17, 2010 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1997 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD52YXV sets codes on second or third drive cycle after clearing all codes . unable to pass DEQ for ready codes do not come on until drive cycles acheived but at that point mil light comes on . LT fuel trim bank 2 -14 at idle LT fuel trim bank 1 -8 at idle . rich/lean... Trouble codes: 135 (137 -), 137 (155 -), 155 |
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| 2000 Cadillac Seville STS 4.6L transmission VIN: 1G6KY5496Y good morning have this seville in the shop complaint was harsh engagement when shifting from park to reverse and from netural to drive tranny was replaced 3 months ago for the same complaint now i have no crank with ignition but can jump it at the relay and it... |
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| 2002 Cadillac Escalade 6.0L gauges VIN: 1GYEK63N42 hi every one i have this 2002 cadillac excalade that the fuel gauge-shift indicator dont work also the batt light comes on and abs light and air bag lights come on i also cant comunicate with any of the modules or pcm with my modis but when i plug in a cheap h... |
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| 2000 Chevrolet Impala 3.4L Motor VIN: 2G1WF52E2Y Vehicle came in with leaking head gaskets/lower intake gaskets. Pulled lower intake gaskets to find cracks and slightly corroded coolant passages in gasket. Pulled cylinder heads and found cylinder head damage due to coolant corrosion. Had heads cleaned repair... |
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| 2001 Chevrolet Tahoe 5.3L rear defrost VIN: 1GNEK13T21 Thanks for helping. Rear defroster does not work. Verified this by breathing on window. What's strange is the grid is not open, and there is voltage present on both sides of the grid, as well as in the center of the grids, all the way across, on each leg. Volt... |
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| 2002 Chevrolet Silverado 1500 4.8L Hesitation, Cuts out, Stall, Misfire, MIL Lamp on, extended crank VIN: 1GCEC14X2Z At initial startup engine seems to have a dead spot and backfire when accelerating. After a few minutes,of driving it Runs very good. with no lag and or backfire and plenty of power.Scantool data shows O2 sensors switching with no interuptions during road test... Trouble codes: P1133, P1153, P0300 |
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| 2003 Chevrolet Suburban 1500 LS 5.3L output shaft seals VIN: 3GNFK16Z03 Front dif output shaft seals still look good, Soft, new. We used Timken seals. I see no really good reason to leak again. The axles have a small amount of pitting around the seals but looks like not in the exact place to cause trouble. the driver side bearing ... |
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| 2005 Chevrolet Silverado 1500 4.3L Hvac Controls VIN: 1GCEC14X25 Has code B0414. Can not operate controls for heating and ac vents.Out of calibration.Is there any way except tech2 to do this? Will this happen every time battery is changed? |
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| 2003 Pontiac Grand Am SE 3.4L No Start VIN: 1G2NW52E23 2003 Pontiac Grand Am 3.4L. This vehicle came in as a no-start. No codes present. Would not crank. Scan Data on Genesis showed Transmission in 2nd gear. Moving gear shifter didn't change pid data. Replaced Gear selector swith on tranmission vehicle started up ... |
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| 1999 Saturn SC1 1.9L MIL Lamp on VIN: 1G8Z5277XZ Im having a problem with p0410.Freeze frame shows ect 68F open loop STF 0 LTF -6 VSS 7 MPH . When I start the car intially,the pump blows well and a noid in the solenoid turns on .Valve holds vacuum. When in closed loop I turn on air pump relay and solenoid O2... Trouble codes: P0410 |
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| 2000 Saturn LS2 3.0L Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 1G8JW52R5Y Started as antother techs job got to me and it had not power only would move from the power in drive. No throttle response at all. Had a code in it for the throttle body so i folllowed tsb for r&r tb and pigtail. This part was from the yard. So i put it on and... Trouble codes: P0300 (Random miss) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1994 Cadillac Seville STS 4.6L Poor Idle Quality, Surge VIN: 1G6KY5296P thank you everybody. ended up being ignition module . did idle relearn 4 times and it finally took. code 23 gone . customer came back a couple days later and said running great. Trouble codes: P0023. |
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| 1994 Chevrolet K1500 Suburban 5.7L low power under load VIN: 1GKFK16K0R To all that helped and others who read this fourm, the fix for my headache was the fuel pump. The first 3 pumps were AC Delco, all from the same supplier. I always use Delco for the same reason everyone else does. Because they work better. I replaced the pump ... Trouble codes: 44 (lean). |
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| 2002 Chevrolet Silverado 2500 HD 6.0L Launch Shudder/Vibration on Acceleration VIN: 1GBGC24U72 Sorry it took so long to close this request,I think it was Alex that got it right, The truck had too much weight in the back. After he unloaded the truck the problem went away. Thanks again for all the great advice |
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| 2006 Chevrolet Silverado 1500 LT 4.8L front diff VIN: 2GCEK19V66 The problem with this truck was the the spring in the switch at the transfercase is weak and sticking which was allowing the truck to go into 4wd while driving down the road. We replaced the switch (w/oem part)approximately 14 months ago. Thanks for the help g... |
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| 2007 Chevrolet Equinox LT 3.4L No Start VIN: 2CNDL63F97 we dont really know wht happened to this vehicle. came in the next morning and it fired up and has been running great since. not a fix but a problem gone. (for now). thanks Trouble codes: U0140 (Loss of communication to bcm). |
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| 1996 GMC Yukon SL 5.7L Poor Idle Quality, MIL Lamp on VIN: 3GKEK18R9T sorry for the delay. i was making sure it was fixed. it came down to a spider injection. replaced the unit with the updated injector style and it hasnt been back since. thank you for all your help. Trouble codes: P0171. |
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| 1998 GMC C3500 Sierra SL 6.5L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, MIL Lamp on VIN: 1GDKC34F3W you guys did it again,bailed me out,the repair was first to replace fuel pump relay,this filled the filter reservoir with fuel,i was concerned about pump pulsating and the iatn answered with the fact that it is a diaphram pump,due to noise and strange scope pa... |
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| 2001 Pontiac Grand Am SE 3.4L Passlock VIN: 2G1WF52E94 thanks to everyone who replied,especially Clint [...] who gave me an awesome link that gives you three ways to bypass or disable the system. http.//www.bergerweb.net/grandamsecurityfix.htm |
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| 2000 Saturn LW2 3.0L Excessive Emissions, Stall, MIL Lamp on VIN: 1G8JW82R9Y THanks fellas, tried everything that people suggested. Can not get the 02 sensors in line with this vehicle. After $500 and endless hours it is time to let this puppy go. Trouble codes: P0172, P0175, P0101, P0136, P0156. |
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