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Prev Professional Automotive Repair Technical Discussions for March 21, 2012
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Open Help Requests for GM
Help Request Answers
1996 Buick Regal Custom 3.8L Cooling fans VIN: 2G4WB52K8T
Hello all, this Buick is giving me problems. The cooling fans will not function normally on this beast. The driver's side fan will not come on at all, and the passenger side fan will come on alone at 225 degrees or when the ac is commanded on. When using the T...
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2003 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54Y83
This nightmare came to us from another shop. Car had a miss and check engine light was flashing with a P0300. Found sparkplug wells full of oil and insulator boots carbon tracked. We compression tested engine, replaced all sparkplugs, valve cover gaskets, and ... Trouble codes: P0300
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2004 Cadillac Escalade 6.0L MIL Lamp on
Hello and let me thank you all in advance for reading my post. I first received this 04 cadillac escalade with a code -p0446. I checked all corresponding circuits to the vent valve and purge valve and fuel tank pressure sensor and all circuits checked out ok. ... Trouble codes: P0446
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2011 Cadillac Escalade 6.2L fuel VIN: 3GYT4NEF3B
This truck fails only on first start in morning, here my country min temperature is around 60F, the car start and stall exacly two times, on the third crank stays running quite unstable and in a very lean condition, if its accelerated you hear the explosion in...
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1993 Chevrolet Corvette 40th Anniversary Edition 5.7L total climate system VIN: 1G1YY23P2P
Customer says climate control system worked prior to him running a self tapping srew into the condensor. After replacing the condensor, the climate control back lite illuminates but no data displayed or lights above buttons do not react to button depression. S...
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2004 Chevrolet Avalanche 1500 5.3L 2-3 shift VIN: 3GNEC12T54
Hi All IATN Members. This one has me going in circles. Customer states all of sudden will not shift in to 3rd.No Codes. Checked it out, 1-2 shift on time and smooth, Never shifts after that. No Flare. Just acts like 2 speed trans. Scan shows signal sent to 2-3...
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2004 Chevrolet Aveo LS 1.6L no 4 shift VIN: KL1TJ62604
When I get the car it came with 2 codes which were P0300.P0700 for the engine, and P1781 for the transmission. I did the crankshaft position learn procedure, and after I did a route test, so the light came back again, it showed me an engine code (P0700) and al...
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1994 Pontiac Bonneville SE 3.8L Stall VIN: 1G2HX52L7R
Hi GM techs, this one is hard to find. What it does is you start it and reved to about 4K rpm it will loose voltage to injectors even the alt stops charging and something we noticed was is that the check gauges light comes just before it happens. Have heard a ...
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2000 Pontiac Bonneville SSEi 3.8L Stall VIN: 1G2HZ5417Y
car runs fine when it's running,but will randomly shut off at any time. it will restart immediately and run sometimes for hours with no problem. anyone got any idea's how to narrow down the culprit. thanks in advance. Trouble codes: P0101, P0420
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2003 Pontiac Grand Am SE 3.4L No Start
I need help with this one. The car will normally start and run great. On very cold days, -30 or below, if car is left outside overnight it will not start. I have checked and found that there is no spark. I have tried replacing coolant and intake temp. sensors,...
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2006 Pontiac Grand Prix 3.8L tempature indication VIN: 2G2WP55296
Greetings, Hope someone can help us on this one. Vehicle came in from an auction so we have no prior history on it. But initial problem was a heater core which was replaced. Now vehicles' tempature reading will read between half and 3/4 on the gauge and somet...
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2005 Saturn Relay-3 3.5L steering gear VIN: 5GZDV23L95
Vehicle came in with a concern of a Jumpy steering wheel on slight turns around 35mph. In the shop, steering 1/2 revolution and holding the wheel steady, the wheel will bounce or jump about 1/4 inch or so. The pump, gear and lines have been replaced more than ...
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Fixes & Summaries for GM
Fix/Summary Answers
1999 Chevrolet Tahoe LS 5.7L Cuts out, Misfire, MIL Lamp on VIN: 1GNEK13R8X
I've received several tips of replacing the distributor. I already did this, with a delco, and an aftermarket, as I stated. That was the first thing we did. I've told the customer that his compression is too low and we needed to pursue that. His engine has 157... Trouble codes: P0300.
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2001 Chevrolet Express 2500 4.3L Misfire, MIL Lamp on VIN: 1GCFG25W01
Thanks all responders,Greg from Ill.and Eric from Wash.both got it -crank variation relearn.we had already replaced cap.had new wires.when we reset cam offset we did'nt do relearn so pcm was still working with bad data.doing the relearn fixed it!!thanks all! Trouble codes: P0300, P1345.
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2004 Chevrolet Silverado 2500 6.0L Poor Idle Quality, MIL Lamp on VIN: 1GCHK23U34
Morning all, I want to thank all eight who replied. Got several diffrent responses but what happened was I missed a ground wire on the back of the engine. several said to check grounds. connected ground and now all is well Thanks again Trouble codes: U0107.
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2006 Chevrolet Cobalt SS 2.0L engine prefo VIN: 1G1AP11P86
sending costumer to dealer for a new computer and updated info.thanks for the replies.wires traced fine.no 5volts to baro sensor.wasnt the map or maf sensor or timing.
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2008 Chevrolet Silverado 2500 HD WT 6.6L MIL Lamp on VIN: 1GCHK23618
This one is fixed and the answer was under my nose the whole time. After all the years,family repair shop since 1963 I'm still learning lessons. Scopeing MAP and MAF sensors and looking for some technical glitch I smoked the intake tubing and found the O ring ... Trouble codes: P0401 (EGR insuficiant flow).
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2001 Oldsmobile Bravada 4.3L Transfercase VIN: 1GHDT13W71
THANKS FOR REPLY. ALOT OF GUYS SAID TIRE SIZE.IT WAS MODULE. THE FRONT SENSOR WOULD NOT READ TILL 100RPM CAUSE THE TCCM TO LOCK IN 4WD.WE LOAD TEST THE WIRES FROM TCCM TO SENSOR. OKIT WAS THE TCCM IT SELF CAUSING THE IT. REPLACE TCCM WITH USED WORKED GOOD
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2001 Pontiac Grand Prix GT 3.8L PC Solenoid VIN: 1G2WP12K31
Thanks so much for all of the replies ! The response was overwhelming. I really got a lot of great info from a lot of smart techs. I'll try to cover all of the suggestions. The code 1811 means that the pcm has reached it's maximum shift adaptation. The shifts ...
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