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Professional Automotive Repair Technical Discussions for May 19, 2006 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2000 Cadillac DeVille DTS 4.6L Hesitation, Surge, Cuts out VIN: 1G6KF5799Y Greetings,I have a strange problem here.Vehicle intermitently has absolutely no power,drives like its exhaust is plugged,or lack of fuel.Whats strange is when it happens,if you shut the car off and restart it will be fine.Everythiing I can see on the scanner l... |
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| 1947 Chevrolet coupe 235CID master cyl Hi, this will probably be answered by our senior techs) have a 1947 chev sedan with a 68 chevelle rear(drum brakes) and stock frt drum brakes) did complete brake job(shoes ,drums ,cyls.,hoses ,lines etc.) and at the same time, I installed a dual reservior mast... |
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| 1985 Chevrolet Corvette 5.7L Digital Dash Display VIN: 1G1YY0783F Charging system failed, customer installed alternator. Since then the Digital dash display can only be read if you are wearing Polorized Sun Glasses. Check charging, Snap On Tester came up with Bad Diodes. Replaced Alternator. Chaging okay now. When you start ... |
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| 1990 Chevrolet R1500 Suburban Silverado 5.7L fuel guage VIN: 1GNER16K2L Hello thanks for helping me in advance.This vehicle had a working fuel guage was near empty and customer filled it up only went to 1/2 way on guage. when i disconnect the connector at the sender with the key on the guage goes to past full whith the connector d... |
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| 1993 Chevrolet G20 Beauville 4.3L Cooling Systems VIN: 1GCEG25Z6P vehicle came back a week later with same belt condition, i noticed that the belt was rideing on the outside edge of the crank shaft pully. checked all pulleys the seem to be in line, checked for end play for the crank shaft, no play present. crank pully spins ... |
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| 1996 Chevrolet Blazer 4.3L No Start, Cuts out, Stall VIN: 1GNDT13W4T ok ,we,ve just about given up on this thing ... client says it will stall intermittently and will not restart for an hour or so (sometimes less), but has never done it to us . We've had it running for hours and hours .Fuel pressure and volume good ,ign. module... |
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| 1997 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W7V Hello all, My personal car. Had a no start out of the blue one morning(was running fine). I primed it and it ran for a minute & died. Cranked it a little longer than normal and it fired and ran fine then I shut it down. Left it for the day and came home & trie... |
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| 1998 Chevrolet Blazer 4.3L Blend door VIN: 1GNDT13W9W This Blazer came in for a leaking intake gasket, Get it all back together and the blend door rotates back and fourth from hot to cold. I check the achivies for fixes, many post that had same problem, we even removed fuse 19 which is the AC fuse then reinstalle... |
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| 2001 Chevrolet Blazer LS 4.3L Hesitation, Engine Speed Hangs VIN: 1GNCT18W11 Hello, Thanks to everyone who offers their time and suggestions. I've combed the archives here ... looking for similar problems and see None like this one. Several with other issues ... but nothing like this. This engine with 54,000 miles was installed and... |
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| 2001 Chevrolet Express 1500 4.3L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GCEG15W01 well then, got one that likes my shop. came in running horrible. on test drive massive misfire around 1/4-1/2 throttle especially and began stalling on the way back. got it into shop cut it off hasnt started since. tune up was done last october full set of ev... Trouble codes: P0300, P0200, P0420, P1381, P0128 |
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| 2003 Chevrolet Tahoe LT 5.3L compressor VIN: 1GNEC13Z03 TRUCK SHOWED UP FOR A/C INOP, ON INSPECTION , COMPRESSOR IS NOT ENGAGING, FULL OF REFRIGERANT, HOOKED UP SCANNER, COMPRESSOR IS NOT BEING COMMANDED ON. i CAN TURN IT ON WITH THE SCANNER, AND SYSTEM WORKS FINE, BUT WILL NOT COME ON WITH THE ATC CONTROLS. CHECKE... |
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| 2004 Chevrolet Silverado 3500 6.0L MIL Lamp on VIN: 1GBJC34U84 This truck was tow in from far away.work fine when came in.customer said MIL came on and could not go over 5 mph and displayed limp mode.scan pcm for codes,only U0107 no communication with TCM .only has reoccured once for short period of time since.dont want o... Trouble codes: U, 0107 (lose communication with TCM) |
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| 2004 Chevrolet Impala 3.4L Cylinder & Key Assembly VIN: 2G1WF52E64 This car came in with the turnsignals & hazard lights not flashing. So I replaced the Hazard Switch. I then turned on the hazards to see if they flash, they do. Now comes the problem. I put the key in to check the turnsignals but the key won't turn on. The shi... |
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| 2005 Chevrolet Express 2500 4.8L Centerlink VIN: 1GCGG29V65 vehicle's tires are worn on the inside edge. there seems to be excessive movement on the centerlink. if you hold left front tire stationary and move right front side to side it moves about 2 in. just like bad idler. but idler dosen't move up and down at all, t... |
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| 1982 GMC C1500 5.0L Timing Problem VIN: 123456J789 Taken on test drive, the timing mark on harmonic balancer returns to 12:00 position, with bad idle, and the normal symtoms of a vehicle out of time. Have repeated this procedure 7 times and each time vehicle runs perfect in bay, timing mark sitting about 8 deg... |
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| 1995 Oldsmobile Aurora 4.0L No Start the car was towed in last week, no start,no crank.found bad relay. now cranks, no injector signal, have spark, good fuel pressure, scanner wont talk to pcm, tried new pcm, no difference.not getting signal from pcm to operate injectors. has security decoder. ke... |
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| 1998 Oldsmobile Silhouette GL 3.4L abs VIN: IGHDX03EXW this vehicle came in for brakes locking up, found code for abs turning red light on, no other codes. replaced the control module, nothing happened. bled the system, still no thing happened still locking up. this is a strange one for me. at one time the code fo... |
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| 1978 Pontiac Firebird Trans Am 6.6L windows VIN: 2W87Z8N111 After replacing both the heater core and the evaporator core, neither power window works. There is no power to switch, all fuses have power. Pulled up left sill plate, no power to pink feed wire at that point. Without dismanteling much of what has been reassem... |
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| 2000 Pontiac Sunfire GT 2.4L Poor Idle Quality, Idles about 1200 VIN: 4G2JB32T2Y I have worked on this vehicle once and found the PCM to have a problem, but I didn't fix the original concern. The engine runs about 1200 RPMs at idle, sometimes. Other times it is fine, I could not find an explaination for it. Also, when driving the vehicle a... |
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| 2000 Saturn LS2 3.0L alternator VIN: 1G8JW52R0Y car came in not charging test system found alternator voltage 12.0 volts 3 amps output. replaced alternator with a-1 rebuild alternator we stock then and have not had many problems with this unit. car was gone for one week and came back same thing not charging... |
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| 2002 Saturn L200 2.2L Temperature Gauge VIN: 1G8JU54F52 Temperature gauge flucuates and vibrates between 1/4 to hot all the time. Key on, engine off or engine run. Voltage drop test grounds at PCM and instrument cluster. 0.03 volts. No codes in system. Coolant sensor reads normal for PCM. Replaced wiring connector ... |
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| 2003 Saturn L200 2.2L no accel after 55mph VIN: 1G8JU54F63 the vehicle run great through all the gears until at cruise 55 to give you an example you go to pass a vehicle and the vehicle under full acceleration slowes down and seems to be searching for the correct gear. great customer any help would appreciated. Trouble codes: P0172, P0730 |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1992 Chevrolet C1500 454 SS 7.4L Poor Idle Quality, Hesitation VIN: 1GCDC14N8N thank you all that responded. i am not into the high performance scene but learned alot about throttle body engine modifications. also thank you to stan in pa. First off there is a downside to going to radicle on throttle body motors as they can only support s... |
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| 1993 Chevrolet S10 Blazer Tahoe 4.3L Misfire VIN: 1GNCT18W6P this one is fixed after pulling off plenum i checked to see if there was any leaks in the new regulator and spider that i replaced which there was not. but I noticed the cyl.5 intake hole was very clean while the rest were not. so I pulled the valve cover and ... |
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| 1998 Chevrolet Camaro Z28 5.7L Hesitation, Cuts out, MIL Lamp on VIN: 2G1FP22G2W Thanks to all that responded, I forgot to say that the MAF was dirty and I cleaned it with no change. And with all of the K&N filters out there on our customers cars I am so used to the MAF getting dirty and setting a code, and this one was dirty but it did no... Trouble codes: P0131 (O2 1-1 circuit low voltage), P0137 (O2 2-1 circuit low voltage), P0151 (O2 1-2 circuit low voltage), P0157 (O2 2-2 circuit low voltage), P0404 (Egr performance pintle was stuck so a new one was installed). |
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| 1999 Chevrolet Venture 3.4L Subframe VIN: 1GNDX03E6X Thanks to all. Almost all replies advised to use OE bearing. The advise was right on, replaced with new Timkin and no more noise. Appreciate the help. Tom |
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| 2001 Chevrolet Venture LS 3.4L Driver Information Center VIN: 1GNDX03E01 Ok I did receive 3 replies & all said replace the BCM. At this time the customer doesnt want to shell out the cash for it. Thanks for offering the suggestions. |
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| 2002 Chevrolet Trailblazer LS 4.2L wiper arms VIN: 1GNDT13S12 You guys ROCK!!! 3 unanimous replies!! Michael, David and Kevin all said a wiper motor module would fix this TrailBlazer. A quick call to our friendly GM dealer confirmed Kevin's suspicions- it would still be covered by the GM warranty. The customer was estati... |
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| 1995 GMC Yukon 5.7L Stall VIN: 1GKEK18K1S I'm putting this in my strange but true catergory. After testing everything I could think of I went back to fuel pressure again. I noticed that the fuel pressure did not increase when I mashed the gas. Dead head test was on the lower end of specs (It should pu... |
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| 2002 GMC Yukon Denali 6.0L abs pump VIN: 1GKEK63U62 Well what a pain,I thank everyone for the suggestions,I didn't have to worry about the rust on the sensors,both hub and sensor were replced.Both new sensors measured correctly,I ended up changing the r/f hub and sensor again,same thing then switched to l/f and... |
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| 2001 Oldsmobile Alero GX 2.4L No crank VIN: 1G3NK12T01 I had some good replys...Some suggested a bad igintion switch...After a closer check it appeared bad...I replaced it and the car started OK today...Thanks |
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| 1950 Other GM pick up 240CID gauges First i must thank you all for the help. We ended up using a voltge limiter from a chry that drops the voltage down to 7 volts. Changed all the lights to 12v we also changed all the dash lights to 12v. On the ignition side we replaced the coil to a 12v coil an... |
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| 1997 Pontiac Grand Prix SE 3.8L Stall I relaced the Ballast Resistor ( Located in the R/F ) Runs like a charm !!! A big THANKS to everyone who replied !!! |
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| 2000 Saturn SL1 1.9L sdm VIN: 1G8ZH5288Y HELLO TECHS, THANKS FOR CHECKING OUT MY POST,AND SPECIAL THANKS TO BOB [...] .HE SUGGESTED CALLING THIS SATURN A J BODY AND RELEARNING BCM TO SDM NEW PART NUMBER WITH THE TECH 2.tHIS WORKED GREAT.THANKS AGAIN |
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