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Prev Professional Automotive Repair Technical Discussions for January 24, 2014
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Open Help Requests for GM
Help Request Answers
2000 Chevrolet S10 2.2L No Start VIN: 1GCCS1448Y
I posted this problem a while back but it warmed up and never did it agian. Now its winter time. When this truck gets below 40 degrees we have no spark and no injecotr pulse. We have good crank sig. Right at the sensor but nothing showing on the scan tool. We ...
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2002 Chevrolet Impala LS 3.8L Ipc VIN: 2G1WH55KX2
Help this one is driving us crazy my lube boy bought this hoping it was an easy fix but it is proving more difficult he bought it from a backyard mechanic and he said he replaced the manifold and valve cover gaskets and didn't run afterwards so we got it to th...
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2002 Chevrolet Silverado 2500 HD 6.6L monitor,smog check VIN: 1GCHC23172
I cleared the codes,resetting monitors and am having trouble with EGR monitor not completing.need to have it complete to pass smog check.Drove several times as instructed "drive cycle" cold start below 50 celcius(120 f).let idle fans on ac on 3 minutes.cruise ... Trouble codes: P1093
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2004 Chevrolet Silverado 2500 HD 6.6L Misfire, Poor Fuel Economy VIN: 1GCHK23134
customer brought vehicle in with fuel in oil we removed injectors and customer had them tested with one coming up bad.so we reinstalled with new seals and copper washers new return lines and gaskets changed oil and filter drove 5 miles and once again fuel in o...
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2005 Chevrolet Equinox LT 3.4L Vibration in body VIN: 2CNDL73F35
Hi Everyone and thank you for the help. I have an 05 chevy equinox that has a Vibration above 55. The only way that we have found to get rid of the Vibration is to pull the rear drive shaft. We have 2 05 chevy equinox and the other one does not have any Vibrat...
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2005 Chevrolet Trailblazer LS 4.2L Unknown VIN: 1GNDS13S65
vehicle came in would stall while customer was driving finally got the vehicle to stall and checked had no fuel pressure and pump would not run replaced fuel pump and test drove vehicle still the same problem any help would be great
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2001 GMC Yukon XL 1500 SLT 5.3L MIL Lamp on VIN: 3GKEC16T91
tank pressure voltage reads 1.25v when i use my modis to command purge solenoid to 10% or more there is no change to tank pressure voltage. 12v to purge solenoid and opens when control wire is grounded manually. im thinking ecm driver is not grounding control ... Trouble codes: P0440, P0443
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2004 Pontiac Grand Prix GT2 3.8L Surge, Poor Fuel Economy VIN: 2G2WS54284
This is my wife's car, we have owned it since 82,000 miles. It now has 263,000 and has always been maintained properly with OEM components. While driving in drive or overdrive at a steady speed the converter locks and unlocks rhythmically... Its driving me nut...
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2007 Saturn Ion-2 2.2L Starting VIN: 1G8AJ55F57
hello techs, have this saturn that the key wont turn all the way to take the key out, only happens some times,when you pull the shifter botton when it is acting up you can not here the ignition lock control soleniod click but then it will work fine and you can...
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Fixes & Summaries for GM
Fix/Summary Answers
2007 Cadillac Escalade 6.2L Unknown VIN: 1GYFK668X7
GOT IT GOING NOW. THE MODULE WAS COMMUNICATING BEFORE DIAG BUT I GUESS WHILE WORKING WITH IT, IT FINALLY KONKED OUT. FREAKING THE BUS OUT. SO I UNPLUGGED AND ALL WAS WELL. WELL NOT ALL BUT YOU GET IT
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2008 Cadillac CTS 3.6L Mechanical VIN: 1G6DF57788
the mystery is solved! the passenger side is in fact the right bank. the driver's position is the point of reference. The vehicle is running new chains updated cam actuators which are slightly deeper and eliminate the need for cam spacers. thanks guys
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1981 Chevrolet Corvette 5.7L Buzzer VIN: 1G1AY8760B
Thanks for all of the input! This little black box is unfortunately extremely difficult to locate. Hopefully we will find one soon and post a fix for this hotrod. I am fairly confident that the key-in/seat-belt buzzer is at fault because with no "input" wires ...
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1994 Chevrolet Blazer 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNEK18K6R
thank you for all your help, dan from texas hit it just right, exactly the same problem, check the fuel pressure koeo and almost 0 , checked koer about 3 psi, and look at the spray pattern, not good, at this time customer did not want it to fix it, he said th... Trouble codes: 33 (map sensor vaccum too high), 44 (lean).
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2008 Chevrolet Equinox Sport 3.6L doors
I have received some usfull info but I can't get the car back in She will be back I am sure for the normal service and I will post a fix then sorry Bill
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2004 GMC Sierra 2500 HD SLE 6.6L No Start VIN: 1GTHK29274
we found that high pressure fuel pump was faulty. the customer probably cranked vehicle til it burned up the start circuit(reason we had to replace the ecm) we had a injector signal and pulse but no pressure to fire them. customer decided to tow vehice away an... Trouble codes: P0370 (Timing Ref High resolution).
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