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Prev Professional Automotive Repair Technical Discussions for February 21, 2010
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Open Help Requests for GM
Help Request Answers
2004 Buick LeSabre Limited 3.8L Surge, Cuts out, MIL Lamp on VIN: 1G4HP52K94
I met the owner of this vehicle this afternoon to diagnose a SES light being on. Checked and found a po171.Upon start-up the engine would sputter and clear up.I checked for misfire readings and did see different cylinders misfire and then return to normal. I e... Trouble codes: P0171
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2008 Cadillac CTS 3.6L Pedestrian Impact Detection Module VIN: 1G6DR57V68
Hello, Today the car came in with a dtc B1000 in the Pedestrian Impact Detection Module. I already replaced this module for two times. The first time it had dtc B1000 set as current, so I did the diagnostic check, and that told me to replace the module. So wh...
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1999 Chevrolet Malibu 3.1L Poor Idle Quality
misfire #3 cylinder
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1999 Chevrolet Express 3500 5.7L prndl VIN: 1GBJG31R8X
Hi Folks. I checked the archives and did't find anything with the same symptoms. PRNDL reads correctly on scan tool. Instrument panel PRNDL shows nothing when in park, neutral, drive and 2. When you put it in reverse, 3rd or first, only the 3 illuminates. I kn...
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Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick Century Special 2.2L Misfire VIN: 1G4AG5544S
Those of you that suggested a weak/bad coil was correct. It just stumped me because it originally didn't have spark at no. 3 then when I replaced the plug wire at that cylinder, I had spark. I ended up replacing the coil, and it ran like it should. I road t...
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1999 Chevrolet Tahoe LS 5.7L MIL Lamp on VIN: 3GNEK18RXG
Well I decided to fix the catalyst correctly by installing new universal style catalytic convertors. As a tech I feel as many of you all do that vehicles so be repaired correctly even if it is your own. As far as the cooling fan goes I installed a universal el... Trouble codes: P0420 (catalyst).
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2000 Chevrolet C3500 6.5L No Start VIN: 1GBKC34F6Y
Injection pump was the culprit. All the replacement items on this pump GM wont do , they just do the warrantied work and replace the pump Trouble codes: 1216 (660 -), 660.
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2003 Chevrolet Impala LS 3.8L compression VIN: 2G1WF52E53
Just to start, Thanks to everyone for their help in this matter. And yes it was a 3.4L. I don't know why it came up with a 3.8 when I inputed the VIN. Just about everyone hit it on the head. The lifters were "pumped up" causing the valves on at least three of...
17
2004 Chevrolet Cavalier 2.2L power steering pump
I replaced pump again and when flushig system got a small amount of water out out.These were gm pumps and there is no pulley to press on or off.end of cam was clear& pressure ok.I think water was freezing causing problem.Reccomended rack be replaced due to wa...
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1995 GMC G2500 Vandura 5.7L Brake shift interlock solenoid VIN: 1GDEG25K8S
Thanks for the replies to my request.I guess some of you are as frustrated with these cheap things as i am.It turns out that the problem was the spring in the switch that the rod has to push was just too strong. The rod would actually slide the switch before i...
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1999 GMC K1500 Suburban 5.7L MIL Lamp on VIN: 1GKFK16ROX
many thanks to all who responded and those that pointed me back to the fuel pressure. i performed tests again, the waveform and volume were exelent but pressure was about 10 psi low. i wound up removing the upper intake, replacing the fuel pressure regulator w... Trouble codes: P0171, P0174.
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