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Professional Automotive Repair Technical Discussions for June 20, 2008 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1987 Chevrolet V30 Silverado 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, MIL Lamp on VIN: 1GBHV34K7H The truck came in with a code 33 for MAP sensor and and oxygen sensor code. The fuel state stays rich even after replacing both affected components. Oxygen sensor volts are .69 wirh 0 cross counts. IAC is 47 and coolant temp switch is working. Can not figure o... Trouble codes: 33 (MAP sensor) |
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| 1995 Chevrolet K1500 Suburban 5.7L Hesitation, Cuts out VIN: 1GNFK16K4S Vehical came to us after above parts wre replaced. this problem started after a long run on the hi way he came to a stop ands started acting up. Has a bad hesation on accereration much worse when in open loop.Ck on scanner sensors look norman. did note is seem... |
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| 1998 Chevrolet K1500 Suburban LS 5.7L starter drags hot VIN: 3GNFK16R4W I'm running out of ideas on this one.the problem only occurs after the engine is completly warmed up.acts as if the timing is to fast.I can also disconnect coil primary and the engine cranks over normally. |
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| 1999 Chevrolet S10 LS 2.2L No Start VIN: 1GCCS1947X hello thanks for the replies this gets. well s10 had spun bearing another tech pulled it and did the work put it together and would not start. he quit and now i have to do it (good times) i have a no start condition wit no fuel or spark the security light is n... |
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| 1999 Chevrolet Silverado 1500 5.3L security sys VIN: 2GCEK19T8X Security system is preventing us from starting this vehicle. It will start and run for a couple of seconds and then die. Originally it was blowing fuses to the ECM when we turned the key on. We replaced the fuel pump and cured that issue. I cannot find out a... |
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| 2000 Chevrolet Monte Carlo SS 3.8L Stall VIN: 2G1WX12K6Y Ok so I need to repost this as customer droped this off again complaining of intermittant stall.I have only confirmed this condition three times last week but that was before crank sensor and ICM replacement.I have checked for codes in ALL modules none found (... |
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| 1991 GMC Sonoma SLE 4.3L Poor Idle Quality, Surge, Stall, STALL VIN: 1GTCS14Z4M i have this sonoma that will hunt for idle originally was getting code 12 all the time put in new ecm and cured that problem but still willl stall seems to idle fine or a little high all the time if you hook up the brick idle will ramp up to 1000 rpm and gradu... |
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| 2004 GMC Sierra 1500 SLE 5.3L climate control VIN: 2GTEC19T44 This unit intermittently fails to turn a/c on snowflake flashes on digital display( dual zone automatic climate control) checked low pressure switch and bypassed all refridgerent levels and psi ok. When operating unit works fine all zones and temps settings fu... |
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| 2005 GMC Yukon SLE 5.3L A/C Control VIN: 1GKEK13T95 Hi Guys, This came in from the body shop, all ambient sensors replaced, we did the normal evac on system and started the recharging and found the control stuck on defrost. We disconnected the battery for 3 minutes and made sure to touch the bat. leads as to di... |
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| 1998 Pontiac Firebird 3.8L evap core VIN: 2G2FS22K5W the line from condenser to orfice tube is luke warm . the evap inlet is very cold as for to outlet. this car has high duct temp. the original complant was a leak in a/c system and high duct temp when a/c is charged. i replaced the compresser to fix the leak, a... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1997 Buick LeSabre Custom 3.8L No Start VIN: 1G4HP52KOV Thanks for all 53 replies, and sorry for the long delay in posting the fix waiting for costumer to gather funds most of you where correct in saying the intake manifold was leaking, after replacing the manifold and gaskets, new o2 sensors which where burnt out... |
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| 1994 Chevrolet Blazer 5.7L abs lite VIN: 1GNEK18K1R First thank you for the help everyone.After trying all idea's i feel it needs to be cleared with a tech2 or possibly the abs module went bad customer decided to take it as it is and possibly stop by dealer to try clearing it.If i find out anything more i will ... |
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| 1995 Chevrolet Blazer 4.3L No Start, Stall VIN: 1GNCT18W4S Thanks to all who replied this truck had 2 problems first was the terminal for the cpi unit the spade was not making good contact kinda like the gm fuel pump harness. That fixed my no start and start and stall. The 2nd problem was when i test drove the truck i... |
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| 1999 Chevrolet Silverado 2500 6.0L Hesitation, Cuts out VIN: 1GCGK29U9X Well, thanks to all for the help and suggestions. Can't believe we overlooked something so simple, but the scan tool data didn't indicate that there was a problem. A simple cleaning of the MAF did the trick. Couldn't even see the usual fuzz-like contaminant... |
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| 2000 Chevrolet S10 4.3L Poor Idle Quality VIN: 1GCCS19W7Y Thanks to all that replied. The fix was dual. Replaced plug wires and cleaned IAC. Now the truck starts and idles fine cold. |
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| 2005 Chevrolet Impala 3.4L noise in the passenger compartment VIN: 2G1WF52E35 thanks for all your help but the customer declined the repair at this time. however we strongly agree that the problem exists in the pressure regulator. |
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| 1999 GMC C7500 7.4L Excessive Emissions, Misfire VIN: 1GDL7H1D1X Well, thanx for the replies. This vehicle ran for several months with an open coil driver. The resulting ignition misfire smoked the catalytic converter. We replaced the converter and all the gasses came back to normal. It didn't make the 'misfire' go away and... |
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| 1995 Oldsmobile Aurora 4.0L no power VIN: 1G3GR62C6S thank everyone for the help!this car is fix.it had two problems,one fuel flow and two,injectors.some of the injectors were plug and some were leaking.A new set of injectors and fuel pump was the fix.thanks for the help |
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| 1997 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NE52T6V I tried everyones suggestions,removed O2 sensor,cleaned and tightened grounds,verified 12v at all fuses,still would not start.I swapped the ignition coil assembly with module to another vehical and it ran fine,so it was O.K. I took a fuel sample,it looked good... |
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| 1998 Pontiac Grand Am SE 2.4L Stall VIN: 1G2NE12TXW WELL SORRY IT TOOK SO LONG TO CLOSE BUT I PUT A COOLING FAN MOTOR ON IT AND IT HELPED IT BUT STILL DID IT ON OCCASION THEN BY ACCIDENT I FOUND A CRACKED VACUMN LINE ON THE THROTTLE BODY REPLACE D IT , BEEN RUNNING FINE FOR THREE WEEKS NOW THANKS FOR THE HELP |
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| 2005 Pontiac Vibe 1.8L MIL Lamp on VIN: 5Y2SL63865 Thank you for all the great advice. We went to bat for our client, who had been told NO Warranty” and did indeed find once confirmed COMPUTER = warrantied for 8/80. *We reinstalled clients original computer w/ CODE P2716 = PRESSURE CONTROL SOLENOID "D" Ele... Trouble codes: P0012 (Camshaft Position A Timing Over-Retarded Bank 1). |
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