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Professional Automotive Repair Technical Discussions for July 28, 2011 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2004 Buick Rendezvous CX 3.4L Blower Motor VIN: 3G5DBO3E04 customer came in with a2004 buick rendeevous with manual a.c. the blower motor ran all the time even with the ign switch off,i replaced the blower resistor still ran,replaced blower motor still ran, picked up a hvac mod. through a salvage still ran, i can unpl... |
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| 1989 Cadillac DeVille 4.5L Blower VIN: 1G6CD515OK Thanks for help in advance. This car is haunting me. Blower is inop. I have no power on ckt 761, the orange wire from the bcm to fusible link and on to the power module and the blower motor. I have tryed a used bcm and have the same results. I do have 6 volts ... |
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| 1990 Cadillac DeVille 4.5L Hesitation, Cuts out, Stall Hello Ace techs, thanks for taking the time to view this post. I'm working on a 90 Cadillac Deville 4.5 pfi. At times the engine will lose all or nearly all throttle response as if all cylinders are dropping out, yet the engine stays running at idle. This can ... |
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| 1988 Chevrolet Camaro 5.0L runs away VIN: 1243FGTR6W vehicle idles fine until put in gear. then goes to 1500 and you half to hold on brakes to get it to stay and it is dificult to get stoped. |
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| 1988 Chevrolet Corvette 5.7L Excessive Emissions VIN: 1G1YY218XJ Thanks in advance. Exhaust readings are loded mode. After replacing egr nox went up. Before replacement 807 15mph and 479 25mph. Cleaned all ports for egr and no restriction found. Egr port is not getting as hot as we would expect. Front cats seem to be workin... |
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| 1999 Chevrolet Malibu 3.1L ac system VIN: 1G1ND52J1X Customer brought car in for no a/c. I checked pressures and looked for leaks none found, pressures were just a bit off @ hi150 lo 25. so i recharged and pressures were at 200/30 but still only cooling about 10deg F from ambient. compressor runs continuously. I... |
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| 2003 Chevrolet Silverado 2500 HD LT 6.6L Excessive Emissions, Poor Idle Quality VIN: 1GCHK23173 hello fellow techs, im gonna start with numbers im hoping to get something figured out on this pick up. p0380 was present when we got the truck not too worry about it at this time, p1238 was said to have showed up at other shop but wasnt preset when we got it... Trouble codes: P0380, P1238 |
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| 2008 Chevrolet HHR LS 2.2L shifter VIN: 3GNCA13D38 The car somtimes will not shift from park. when it will not shift I have my brake signal from the peddle sensor to the bcm. but the bcm does not put the voltage out to the shift lock solenoid. My conclusion is the transmission range switch but i could not find... |
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| 1990 GMC C3500 Sierra 7.4L Mechanical VIN: 1GCHC34N3L Hey all , Hope you can help with this one. This 454 was replaced by a dealership and hasn't ran right since. The new owner has literally replaced everything. Computer - distributor - throttle body - fuel pump - you name it. When I looked at it, I was immediate... |
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| 1998 GMC C3500 Sierra SL 7.4L fuel gauge VIN: 1GDKC34J2W Sweep test with tech 2 gets gauge to respond. Does anyone know what we should see going into and out of balance module (fuel level in & fuel level out circuits)? Gauge shows approx 1/4 tank yet senders indicate nearly full. |
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| 2001 GMC Jimmy SLS 4.3L tranfer case VIN: 1GKCT18W11 Good morning to all.I am putting this on here to cover all my bases and I am running out of ideas.Customers complaint is vehicle switches from 2wd to either 4hi or 4lo byitself while driving down the road.I have only comfirmed this once (last week).I have insp... |
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| 2006 GMC Sierra 2500 HD SL 6.0L master cylinder VIN: 1GTHC24U76 This truck came in with a braking issue while stopping, from crusing speed the brakes are perfect, dont grab, make any noise or vibration. Just as the truck comes to a stop the pedal drops alittle bit as if the pressure is released somewhere, but the truck sti... |
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| 1996 Pontiac Grand Am SE 3.1L temp,tach,speedo,fuel gauge VIN: 1G2NE12M7T Hi Group, I'm in need of your help on my son's car, he went to drive it the other day and the temp gauge, tach, speedometer, and temp gauge were not working. I've tried a used IPC with the same results, a different ignition switch and a different PCM. I've tr... |
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| 2003 Saturn Vue 3.0L Misfire VIN: 5GZCZ63B73 Customer came in with vehicle that had codes. Po300 random misfire,[...] #1 misfire,po421 cat eff. low bank 1,p2b03 which I cannot find any info on.I monitored bank 1 o2 sensors and rear o2 mimicing front so I assume cat is faulty.I checked spark plugs and ... Trouble codes: P0300, P2B03, P0421, P0301 |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2000 Buick Regal LS 3.8L MIL Lamp on VIN: 2G4WB52K8Y Come to find out that although I could backprobe the plug and command the vent valve to close for my smoke test, the PCM ground wire going into the plug itself had a break and valve was not closing when system test was occuring. I repaired the wire going into ... Trouble codes: P0440. |
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| 2005 Chevrolet Express 2500 4.8L Hesitation, Misfire VIN: 1GCGG25V45 I am a one man operation here and have not had time to close this before now. I replaced cat, and both sensors on bank 2, When got the cat off you see where it had been damaged. This vehicle had a bad coil on this bank recently and thats what contributed to t... Trouble codes: P0300 (missfire). |
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| 2006 Chevrolet Silverado 1500 LT 4.8L heater blower VIN: 1GCEK19VX6 WELL I THINK I HAVE THIS ONE FIXED.. I TOOK MOST OF YOUR ADVISE AND REPLACED THE BLOWER MOTOR ALONG WITH A NEW RESISTOR AND AT THE SAME TIME I CLEANED UP THE CONNECTOR SO I GUESS WE'LL SEE WHAT HAPPENS. THANKS TO EVERYONE FOR YOUR ADVISE |
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| 1994 GMC K2500 Sierra SLE 6.5L No Start VIN: 1GTGK29F7R Thanks very much for everybody's help.The problem ended up being bad connections in a harness for the relocated PDM that the previous owner had put in and used bare butt connectors and no solder or tape or shrink tube.All is well now. |
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| 2004 GMC Yukon XL 1500 SLE 5.3L Previous repair VIN: 1GKFK66U64 Hey Thanks so much! Just wanted ammo for this jerk who is now taking me to small claims court! Guy got handcuffed and arrested last Saturday! Karma is a B*tch! He is bad mouthing me in my town. I am doing a counter suite. I will update after all this crap... |
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| 2001 Pontiac Aztek 3.4L gauges VIN: 3G7DA0311S actually some of it is fixed. the owners wants to get rid of it. so we put an ecm in it to make it driveable which it is now. it still has problems with the bcm. |
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