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Professional Automotive Repair Technical Discussions for August 14, 2009 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2002 Buick Rendezvous CX 3.4L Alarm Activation VIN: 3G5DB03E22 About 2 weeks ago we replaced the BCM in this vehicle because the alarm would start to sound without being triggered. As soon as the customer would turn it off it would reactivate again. (I should mention he lives next door to me and kept me up all night long.... |
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| 1999 Cadillac Escalade 5.7L Door Locks VIN: 1GYEK13R4X Good morning Members Thank you for taking the time to read my problem. I have Mitchell and Alldata and both show me a Inversion Module, but I can not find one. I have found the BCM, the Door lock relay and the wiring proves they are right. Both programs say th... |
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| 1988 Chevrolet C1500 Cheyenne 5.7L front brakes VIN: 1GDC14K7JZ hi all! HOPE U GUYS CAN HELP ME HERE I CHECKED ALL I CAN THINK OF IT, I CHECKED FRONT ROTORS FOR WARPEDNESS THEY ARE FINE, I CHECKED W/BRAKE LATHE SUSPENSION IS TIGHT , IT DONT PULL TO ANY DIRECCION IT ALL W/BRAKE IS APLYED, WHAT IM MISSING HERE ? |
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| 1996 Chevrolet Blazer 4.3L No Start VIN: 1GNCS18W4T Thanks in advance for any help. After it rains Vehicle will not start, has good spark, 62 psi of fuel pressure cranking, Spraying starting fluid does not help, the only time engine tries to hit is when you let off the ignition switch, no codes in the computer ... |
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| 1999 Chevrolet Blazer 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy VIN: 1GNCT18W6Y This truck belong to my co-worker. trying to help her out. #3 and #5 cyl misfire. plugs get fouled up after 30 kms of driving, quicker with towing. she replaced it with electronic injector update, with the same results, the intake was car-boned up that when th... |
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| 2001 Chevrolet Blazer LT 4.3L Surge VIN: 1GNDT13W7I i may be looking for a silver bullet here. this blazer a 4.3 w motor is driving my cust and me a little nuts here. it has a surge that happens about one time every week or so or 2 or 3 hundred miles. it happens more for cust of course.cust says at cruise aroun... |
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| 2004 Chevrolet Silverado 2500 HD 6.6L all up shifts VIN: 1GCHK23184 this comcern all started when i replaced the t-case with a reman. due to a failed shift fork. after the install of the t-case, veh. would not complete the 2-3 shift and default to first. with no setting of any DTC's. only after the third failed shift attempt ... |
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| 2004 Chevrolet Impala LS 3.8L radio VIN: 2G1WH52K14 Thank you in advance for your time! Theftlock radio displays "lockout".tried to depress 2+3 and 1+4 preset buttons to initiate recovery process to no avail. Did see a couple master code lists in archives but cant seem to figure out how to enter them. tried hol... |
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| 2006 Chevrolet Trailblazer LT 4.2L 2-1 downshift VIN: 1GNDT13S26 hello gentlemen, i have an 06 trailblazer that has an intermittent 2-1 harsh downshift. temperature does not effect it. about 1 out of every 6 or 7 downshifts, while coasting or braking, jerks rarely on 3-2 downshift, more pronounced on 2-1 . inspected and re... |
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| 2006 Chevrolet Cobalt SS 2.4L MIL Lamp on VIN: 1G1AM15B96 customer came in with mil some running fine at this time code in history po106 map sensor performance.Monitored map sensor reading correctly at this time, went through flow chart everything checking out fine all my inputs are correct installed a new oem sensor... Trouble codes: P0106 |
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| 2006 Chevrolet Impala LTZ 3.9L drivers side air VIN: 2G1WU58106 happy friday everyone.im not sure which way to go on this car.it sure seams like the mode door motor,untill while watching the scanner and turning the dial it would normally stay around 140.some how we found by turning the dial to warm then to cold at a faster... |
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| 1995 Oldsmobile 88 Royale 3.8L Hesitation, Cuts out VIN: 1G3HN52K2S Greetings all, This olds at first inspection to me seems to be a restriced exhaust or a dirty MAF sensor. Upon cracking the throttle it hesitates /chuggs/cuts out under load or not. It will pull itself oof idle but barely once it get goind it is not too bad. ... |
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| 1999 Pontiac Grand Am GT 3.4L Cooling Fans VIN: 1G2NW52E4X Engine temp on modus scanner reading proper temp,can switch on low and high speed fans with scanner,but computer not switching fans on and scanner is showing fans off in data no matter how hot the car gets. |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1993 Chevrolet Corvette 5.7L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1G1YY23POP hey guys , thanks for all the help!i have sent the ecm out for rebuild . i have not received it back yet . i do have a confirmation that they found a problem with it !!! i will follow up with the results ! Trouble codes: 43 (esc). |
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| 1998 Chevrolet Cavalier 2.2L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy VIN: 43WM116823 Thanks to everyone who responded to the help.. it was a shorted Air Temp sensor.. I looked that the air temp several time and it is normal.. until one of my other work was jiggling the wire and tapping the sensor then it would flicker.. Thank you all for all t... |
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| 2000 Chevrolet Prizm 1.8L pressures VIN: 1Y1SK5289Y What a turd this job was... The fix... replace the compressor. flushed the complete system. refilled with oil. Works great. Thanks for all the replies. Bad compressor or too much oil was the problem. At this point I'll never know for sure. Thanks agai... |
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| 2006 Chevrolet Aveo LS 1.6L Hesitation, MIL Lamp on VIN: KL1TD66656 Most replies said the throttle body, one said the pedal. I suspect the pedal because on the freeze frame data that is the sensor that has low voltage I think. I'll update one the customer brings back the car and I replace the pedal. Trouble codes: 2135 (throttle/pedal postion sensor/switch a/b voltage correlation). |
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| 2007 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: 1GNDS13S97 Ran 3 cold start cycles and code did not return. Commanded AIR pump with scan tool and it worked fine several times. Told customer to return if light came back on. Thanks for the info. Trouble codes: P1400 (Cold start emission reduction system). |
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| 1997 GMC C1500 Sierra GT 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1GTEC14W3V Thanks for all of the replies. Most suggested checking the wiring and the tps. One said to ck. the connector at pcm for a pulled out connector. We had already checked the wiring but double checked everything suggested to no avail. Customer did hide one fact fr... |
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| 2005 GMC Sierra 1500 4.3L No Start, Cuts out, Stall VIN: 1TEC19X25Z Thanks for the help!! What the deal was the white & black wire to the coil primary was broken at the coil connector. I went back to retest the ignition module and it started right up!!! Continued to flex the wiring harness from module to coil and found the wi... |
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| 1999 Oldsmobile 88 Royale 3.8L No Start VIN: 1G3HN52K9X Thanks to all for the help. Wow, did I blow this diagnose. Before I took the timing cover off to check cam sync the customer mentioned that he'd been loosing coolant. When I presurized the cooling system I found the upper intake manifold leaking at the EGR ... |
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| 2003 Other GM W22 Chassis 8.1L Data Scrambled VIN: 5B4M967G22 Thanks for all the replies...the abs module corrected problem. |
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