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Prev Professional Automotive Repair Technical Discussions for December 12, 2007
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Open Help Requests for GM
Help Request Answers
1995 Chevrolet Blazer 4.3L Poor Idle Quality, Hesitation, Misfire VIN: 1GNDT13W8S
here you go all you experienced gm techs. any help would be greatly apreciated. i have a 06/95 built chevy s-10 blazer, with an ob-ii connector that i cannot establish communication. on my first attempt, using an mt2500 snap on scan tool, i was prompted to use...
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1997 Chevrolet C3500 Cheyenne 5.7L No Start, MIL Lamp on VIN: 1GBGC34R1V
I have a truck here with a no start and a P1351 (Ignition control circuit high voltage). I have gone through the diagnostic flow chart multiple times and have had no luck. The AC votlage at the ignition module is good and within specs, I checked it using our m... Trouble codes: P1351 (ignition control circuit high voltage)
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1999 Chevrolet K3500 6.5L cruise control VIN: 4TGB162066
This truck has us stumped. The cruise control will not work. Have checked the brake switches, cruise control swiches. powers and grds at the pcm. All inputs to the pcm are working from all the swiches as they should. We concluded it must be the pcm so we got o...
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2000 Chevrolet Express 1500 5.7L heater VIN: 1GBFG15R9Y
a customer came in stated had a/c control head installed and heat and a/c not functioning right. we inspected the vehicle and all vaccum lines were attatched properly. ll works proberly, but there is constant vaccum at the heater control valves. alldata has no...
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2001 Chevrolet Impala LS 3.8L fuel leak VIN: 2G1WH55K61
THIS CAR HAS A LEAK AT THE FUEL RAIL WHERE FUEL LINE CONNECTS. THIS IS SECOND ONE OF THESE. TRIED A O RING FROM A USED LINE BUT IT DID NOT HELP. MY GM DEALER COULD NOT OR WOULD NOT FIND ANY LISTING FOR ORINGS. IF WE HAVE TO REPLACE LINE THE OTHER END DOES NOT ...
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2001 Chevrolet Blazer LS 4.3L 4x4 control VIN: 1GNDT13W01
This ones back to haunt me guys-after installing the new encoder last week this thing worked fine.I personally put it through its paces 20 or 30 times and although the motor seemed a little noisier than it should it worked fine.Now its back and will not shift ...
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2001 Chevrolet Silverado 1500 5.3L ABS Control Module VIN: 1GCEK19T41
This is the 2nd ABS brake control module we have attempted to put in this vehicle. The first time we tried to replace the module, the replacement module we got resulted in all the MILs illuminating on the dash - put back the original module so customer could u...
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2001 Chevrolet Astro LS 4.3L Poor Idle Quality VIN: 1GNEL19W21
This vehicle was towed into our shop as a no start. When we tried to start it , it seemed to be flooded. It finally started after cranking it with the throttle wide open. After it started, it seemed to idle a little rough. It had codes 172 and 174 in history. ... Trouble codes: P0172, P0175
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2002 Chevrolet Corvette 5.7L Hesitation, MIL Lamp on, reduced engine power VIN: 1G1YY22G42
Hey i got a electrical nightmare and need help, Car came in with CEL (P1125,P1286)on and reduced engine power sevice message on and a service active handling message. I went through all the pinpoint test, testing grounds,5V references,signal wire to the APP an... Trouble codes: 1125 (Accelerator postition sensor out of range or disagree), 1286 (Accelerator postition sensor correlation)
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2007 Chevrolet Tahoe LTZ 5.3L wiper pulse VIN: 1GNFK13097
Hi and thanks in advance.I have a Tahoe that the intermittent wipers are inoperative.On the initial placement of the wiper switch to one of the pulse positions,the wipers make 1 swipe and no longer work after that,they just sit in the park position.The low spe...
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1999 Oldsmobile Bravada 4.3L transfer case VIN: 1GHDT13W8X
awd lamp on, code c0308. mitchell leads to replace encoder motor, code reappears c308. does not fix problem.
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2002 Saturn Vue 3.0L No Start, Stall, MIL Lamp on VIN: 5GZCZ63BX2
thanks in advance , this vehicle would shut off at idle in park , hot , intermitantly ,no check engine light on. the customer decided to take the vehicle back . he pulled out side the shop,& left it running . he then opened the drivers door & it stalled . the ... Trouble codes: P2176
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2002 Saturn Vue 3.0L timing belt VIN: 5GZCZ63B02
we did a head job do to bad valve guide seals set the timing belt where we thought it should go spun the motor by hand good compression nothing hit. when started it will run but like crap missfire codes in order 300,306,304,302,303 has to be timing just cant f...
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2003 Saturn Vue 2.2L MIL Lamp on VIN: 5GZCZ23D63
Vehicle came in check engine light and power loss light on. codes stored p0453 p0463 p1635. Fuel guage also inoperative. fuel guage indicates empty with full tank. Customer states this all happened at once,possibly after using a trickle charger to maintain bat... Trouble codes: P0453 (fuel tank pressure high voltage), P0463 (fuel level sensor high voltage), P1635 (5 volt reference circuit 1)
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Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick Roadmaster 5.7L No Start, Cuts out VIN: 1G4BN52P6S
i need to thank everyone that offered help. alot of you said A/C voltage out of alt, but i had none. i ended up sending it to the dealer after checking and rechecking all the sugestion from all of you. they ended up putting an ignition module on it,that was th...
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2004 Cadillac SRX 4.6L Suspension VIN: 1GYDE63A24
Didn't get a lot of replies to this problem but the consensus is probably the steering wheel position sensor. The customer never has returned with the car so that I could further check it out. I did scan for body codes when I first checked it and there were no...
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1999 Chevrolet Tahoe 5.7L Cuts out VIN: 1GWEK13ROX
Thanks for all who replied I personally thought it was in the trans but when the intake gasket was done all the injector poppits were crossed with there companion cylinder. The biggest thing with this truck was that the truck ran really smooth almost to smoot...
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2000 Chevrolet S10 4.3L Cuts out, MIL Lamp on VIN: 1GCCT19W5Y
Well here it goes. This vehicle is yet to be fixed. I double checked the replys(1. Ground at thermostat. This vehicle does not have this. 2. The code P0452. Unplugged with no change.) I did check to see that they were NGK and how the plugs looked. It keeps set... Trouble codes: P0122 (Throttle Postion Sensor Low Voltage), P0404, P0452 (Fuel Tank Pressure Sensor Low Voltage), P1122 (Throttle Postion Sensor Low Voltage).
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2005 Chevrolet Classic 2.2L turn signals brake lights VIN: 1G1ND52F55
Well thank you all for your replies. After replacing the fuses again the car would not act up for the 2 1/2 days we had it. All the sockets and wires looked good. I don't think there is a flasher because the BCM controls hazard and turn signal on/off. Anyw...
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2006 Chevrolet Impala LT 3.5L heater VIN: 2G1WT55K66
Tried a number of things related to getting air out of system, none of these made any difference, flush heater core with water pressure, no help, took and flushed heater core with shop air and that took car of problem, core was plugged with something. thanks f...
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2001 Oldsmobile Alero GL 2.4L Poor Idle Quality, Cuts out, Misfire, Poor Fuel Economy VIN: 1G3NL52T71
I have found that the 4th injector circuit wire is always at ground without a short in the wire so it looks as if the ECM is bad, but when I swapped out with another from a 2001 Grand AM with the same drive train it will not start! I know that the replaced EC... Trouble codes: P0204 (Inj. Circuit Problem Cyl 4), P0304 (Misfire Cyl 4).
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2002 Pontiac Grand Am GT 3.4L Surge VIN: 1G2NW52E12
I received alot of good replies. It was confirmed that the tcc was the problem. The customer did not want any further repairs. We don't do internal transmission work.
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