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Prev Professional Automotive Repair Technical Discussions for February 8, 2011
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Open Help Requests for GM
Help Request Answers
2000 Chevrolet Silverado 1500 5.3L belt noise VIN: 2GCEK19T6Y
Ok guys after this truck runs for 4-5 min. The belt starts to squeak. When first started it is quiet. The power steering pump was leaking and getting fluid on the belt. I replaced the pump and the belt also cleaned off the other pulleys. Still had the noise. I...
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2006 Chevrolet Silverado 2500 HD LT 6.0L Misfire VIN: 1GCHC23U46
Scanner picks up random misfires at idle, and at 2000 rpm and above, multiple misfires on only cylinders #3 and #8. Have replaced coils, coil wires, plugs, checked compression (140-150psi), fuel pressure, 60psi both at idle and under load. Sent off the injecto...
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2008 Chevrolet Express 2500 4.8L abs lite on VIN: 1GCGG25C18
this vehicle came in with the abs lite and ip-brake lite on. brakes all work perfect no pulsating or grinding. the pedle is perfect and vehicle stops as it should. the abs does not kick on at low speeds as they do when wheel sencors are bad or wheel bearings b...
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2008 Chevrolet Silverado 3500 HD LT 6.0L 4x4 VIN: 1GBJK39K88
hello group. All the 4X4s (Plows) are in the shop during our winter this year. This is a question for the Chev Electronics Guys When this truck (and others like it) are locked in 4X4 the only indicator is a small dot on the electronic control. (you need a magn...
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1996 GMC K2500 Sierra SL 5.7L Tcc VIN: 1GTGK29R9T
At 50-55 mph only in 3rd or 4th gear tcc solenoids are cycling on and off. This is cuasing a rpm "surge". Unhooked the egr and evap sol with no change. New tps installed. All input and output speeds steady on graphing scanner. It appears that the ecm is turnin...
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1999 GMC Savana 3500 5.7L Poor Idle Quality, Misfire VIN: 1GTHG39R7X
This van came in running bad at idle. Code for O2 relpaced all due to the milage. Still runs very rich all fuel trims are way -. Runs ok off idle. maf at idle 14-16gps. map sensor is 26 at idle but this thing is barely running at idle. egr is 0%.The inj tubes ...
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2006 GMC Yukon Denali 6.0L rear heat VIN: 1GKEK63U56
hey guys i need help, please anybody have similar situation or repair this cane of problem tanks.
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2007 GMC Sierra 1500 SLE 5.3L Door Locks VIN: 2GTEC19J57
Hi every body, i need your help on this truck. I have a 2007 gmc sierra, the problem is that intermittent the power door locks, locks by self while is driving, or unlock by self while vehicle is park and ignition on, also noted that the head lights come on at ...
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2002 Pontiac Grand Am SE 3.4L MIL Lamp on VIN: 1G2NW52E72
Car came in with service engine light on and no power, has po300 and 420 stored in pcm. Ran backpressure test had over 10 lbs back pressure, tuned up with direct fit converter ok, came back with po132 ran diagnostic chart, checked grounds etc fuel pressure, ra... Trouble codes: P0132 (Ho2s circuit high voltage)
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2002 Pontiac Montana 3.4L Cooling Systems VIN: 1GMDX03E62
Hi folks.I need some new ideas on this problem.This van came in with a overheating/no heat problem.The customer stated that he replaced his own thermostat and waterpump and the van worked great for about a week and then started acting up again.When he lets it ...
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2006 Pontiac G6 GTP 3.9L Cuts out VIN: 1G2ZM15186
Good morning everybody, I think I already know the answer to my question, I just don't know how to get there. Complaint is intermitent lack of power or stall. It finally happened to me on a test drive yesturday. I pushed the pedal down and nothing happened. P2... Trouble codes: P2135 (Throttle Position Sensor Ou tof Range)
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Fixes & Summaries for GM
Fix/Summary Answers
2002 Cadillac DeVille DTS 4.6L Wheel Speed Sensor VIN: 1G6KF57952
Thanks for all the replies. The connector was the problem on the vehicle side of the wiring harness.
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2003 Cadillac CTS 3.2L Ignition VIN: 1G6DM57N13
The bank two exhaust cam was off by 1 tooth. You guys hit this one perfect. Realigned the timing marks and it runs like a charm again. Thanks
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2007 Cadillac Escalade 6.2L Mechanical VIN: 1GYFK63837
Thanks for your help. I removed the filter under the oil switch. It was clogged. Cleaned and changed oil. Everything is ok now.
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1994 Chevrolet Astro 4.3L Engine VIN: 1GNDM19W3R
Thank you to all who replied. I had some very good answers that got me going in the right direction. Most said the pickup coil or module which after thinking about it I agreed and put a rebuilt distributor in. Then after I was done cussing because the problem ...
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1996 Chevrolet Impala SS 5.7L Misfire, MIL Lamp on
Thanks again to all that replied. Monday morning smoke tested the engine.Found some leaks along the intake runners,but nothing coming out of the crankcase. Removed intake and inspected gaskets.Both didn't look that bad.Replaced with new gaskets and also a new... Trouble codes: P0410 (Secondary air pump problem), P0300 (Multi misfire), P0420 (Bank 1 cat. Efficity), P0335 (Crankshaft position senser problem), P0336 (Crank shaft position problem).
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1997 Chevrolet S10 LS 4.3L No Start, Flooding VIN: 1GCCS19X7V
I want to thank all of you who responded.Got lucky with this 1 had another vehicle come in that was the same except in good running order.I guess the answer was in my question.It turned out to be a bad map sensor.I saw very little change while cranking while f... Trouble codes: P0300.
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1999 Chevrolet C3500 6.5L Mechanical VIN: 1GBJC34F6X
well its been over a week and i gotton over 300 miles on it so far. i am very lucky the trans works great and that transgo shift kit wasn't too bad to install. so far everything is working beyond what i expected from a junk yard trans. now i take the old one a...
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2002 Chevrolet Suburban 1500 LS 5.3L Misfire VIN: 1GNEC16T22
tank you to all of you tha help me wt this one,the problem was the left side cat was plugup big time, the only problem wt thos is tha ther 1500$ man tha tomush but is fix thankyou, mistfire on one bank po300. Trouble codes: P0300.
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2004 Chevrolet Silverado 3500 6.6L Misfire VIN: 1GBJC34224
thanks to rob [...] for clearing this up for me.it was a communication problem.wiring was rubbed thru at the engine harness junction on drivers side above valve cover.once again,thanks for all the input. Trouble codes: P1223 (1 injector output circuit).
2
2004 Chevrolet Trailblazer LS 4.2L Can not flash VIN: 1GNDS13S24
Thanks for all the help. We replace the PCM and programed it with the GM MDI and all is well. Trouble codes: P0128 (Coolant Temp), P0606 (PCM Fault).
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2005 Chevrolet Impala 3.8L Poor Idle Quality, MIL Lamp on VIN: 2G1WH52K85
thanks you all for your help. PCV valve was good but lower intake manifold was leaking vacuum also customer notified me vehicle over heated a few times and we also found cylinder number three leaking threw valve seal. Again thanks for all the help!!! Trouble codes: P0300.
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2005 Chevrolet Tahoe LS 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNEK13T65
WOW 22 Replies thank you all.Thanks to all your recommendations I have proved beyond doubt that #3 cylinder on this engine has a valve problem. Most of you felt that my diagnostics was thorough with the exception of a leak down test. What I did was pull the va... Trouble codes: P0300 (Random misfire).
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2008 Chevrolet Uplander LS 3.9L MIL Lamp on VIN: 1GNDV23W48
This was a tough one because the code would only set after a 80 or so mile drive on highway. I have determined that the rich condition is not causing the p1174. I dont think that rebuilding these injectors is the way to go, wish I would have went with new ones... Trouble codes: P1174.
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1995 Oldsmobile 88 Royale 3.8L No Start, Poor Idle Quality, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G3HY52K8S
THANKS JOSEPH FROM NEW YORK YOU WERE RIGHT THE SCAN TOOL WAS LYING TO ME THE WHOLE TIME, I CHANGED SCANNERS AND VIOLA THINGS STARTED TO MAKE SENSE, AND YES I DID DO TESTING BEFORE INSTALLING A COMPUTER, BUT FOUND NOTHING FAILING, WHAT I DID TO FIX THIS WAS TO ... Trouble codes: P0703 (Brake switch), P0501 (Vss circuit), P0755 (Trans selinoid b), P1361 (None), P0101, P1619 (Oil life monitor).
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1998 Pontiac Trans Sport 3.4L ABS Motor VIN: 1GMDX03E9W
I've done what I could for this one. I pulled the cover off and the gears were all there intact so this tells me the motor pack is probably bad. Without the right scanner I'm done. The owner doesn't want to spend a whole lot of money fixing it because of all t...
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1999 Pontiac Sunfire SE 2.2L Stall VIN: 3G2JB1248X
thanks for all the help and a special thanks to jean-marc it was as marc said the computor had a bad ground voltage for some reason that i still dont know it was making altenator work harder.car runs now with alt hook up. thanks again to all keep me busy for l...
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2001 Saturn L100 2.2L heater tubes VIN: 1G8J482FX1
thanks for responce.talked to sat tech.tubes are installed from outside and can be a pain.
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2008 Saturn Vue Red Line 3.6L Cuts out, Stall, MIL Lamp on VIN: 3GSDLU3N58
Thanks ONCE AGAIN folks. A new throttle body resolved the problem. When vehicle cam in tody also had codes P1516 and P2101 for closed throttle performance. After verifying connecions and circuits were OK, relaced throttle asby and notd that throttle p... Trouble codes: P2135.
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