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Prev Professional Automotive Repair Technical Discussions for November 9, 2011
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Open Help Requests for GM
Help Request Answers
1967 Chevrolet Corvette 7.0L Misfire VIN: 194677S105
This will be a long disertation. Feel free to email me any questions or suggestions to help diagnose this problem. This 427 390 hp engine will blubber and pop out the side pipes at 5200 rpm, no matter whether driving or under no load in the shop. When driving,...
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1995 Chevrolet Tahoe LS 5.7L Torque Convertor Lockup VIN: 1GNEK13K9S
When you drive this everything works fine for about 5 to 7 miles then the torque convertor lockup will not unlock. It will drag the engine down like a clutch not being released when pulling to a stop. I tried to scan it at the customers home before brining it ...
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2002 Chevrolet Avalanche 1500 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNEC13T22
I am working behind another mechanic trying to get this vehicle passed through a gov't assistance program. I found the wrong plugs in it and a messed up intake gasket. However now that all is corrected I still have a constant #3 missfire that cannot get to go ... Trouble codes: P0303, P0300, P0301
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2002 Chevrolet Suburban 1500 LS 5.3L Lifters VIN: 1GNEC16Z82
we removed the serp. Belt and still sounds link a noisey bearing squeking.it sounds like the front of motor.not sure i did one of these it but the noise was in the back of motor and it sounded more like a crake flywheel . And it ened up beaing the roller lifte...
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2003 Chevrolet Silverado 2500 HD 6.6L Cranking time
Hello, Having a problem with a LB7- long crank time after sitting. Truck came towed in with a bad fuel pump. Installed new pump and runs excellent. Only problem is it has an excessive crank time after sitting. Quick restarts untill about 15 minutes. Clear line...
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2004 Chevrolet Silverado 2500 6.0L Misfire, MIL Lamp on VIN: 1GCHK29U44
Thanks for any help or ideas! This is a plow truck that came in for preplow season maintance with no check engine light (new owner just purchased the truck) and the truck returned with a random misfire (code p0300) on many cylinders (using tech 2) but mostly c... Trouble codes: P0300
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2005 Chevrolet Suburban 1500 LS 5.3L transfer case VIN: 1GNFK16Z55
Hello all, Truck came in on the hook stuck in 4low. We pulled codes for the encoder c0327, motor was frozen we replaced it. While on the test drive the service 4wd message came on with codes for the encoder and the selector switch. I checked the harness for c...
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2005 Chevrolet Silverado 1500 4.3L 5 speed manual hard shifting into gear VIN: 1GCEC14X45
Mechanic here just bought a truck so no history is known. a week after purchase it is starting to get harder and harder to get into gear. While truck is moving it will shift into gear just fine. 75% of the time though when sitting still it takes too much forc...
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2006 Chevrolet HHR LT 2.4L Temp Gauge VIN: 3GNDA23P26
Replaced temp sender, temp sender unpluged -30* jump terminals at temp sender +320*, clear the p0128 code and temp gauge works until the ce lamp comes on and sets the p0128 code then temp gauge does not work, engine is heating up to 210*. Customer states that ...
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2003 GMC Sierra 2500 SLE 6.0L Oil pressure VIN: 1GTHK29U53
Truck came in with no oil pressure at the gauge but no noise from motor at this time.We checked oil pressure with mechanical gauge to verify oil pressure and found that the pressure to be 0 at idle and load it up and never went pass 15lbs of pressure. The part...
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2007 Hummer H3 3.7L low speed VIN: 5GTDN13E57
Wipers will not park,when key is turned on wipers will sweep twice then stop up down or in the middle of the windsheild.Pulled a code B3718 wiper relay ckt high.but have no test procedure.Tested resistance of wiper switch positions and test passed.Commanded lo...
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Fixes & Summaries for GM
Fix/Summary Answers
2000 Chevrolet Silverado 1500 4.8L fuel gauge VIN: 1GCEC14V2Y
Well, it is fixed. Turned out to be the sender. We knew that both the senders as well as the gauge clusters have lots of troubles. The sender was open circuited at times and was causing the gauge to go from 1/3 tank to empty. What we did was remove the under h...
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2001 Chevrolet Malibu 3.1L theft VIN: 1G1ND52J01
this one is fixed becouse john from georgia.he is the real deal.thank you john. ok we bypas the theft system by inst resistor btw passlock sign.grang[black wire] and passlock sign. data. then 10 min relern 3 times thanks all for help
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2001 Chevrolet Impala LS 3.8L No Start VIN: 2G1WH55K31
THANKS TO EVERYBODY FOR YOUR HELP, REBUILT ECM AND REPROGRAMING IT FIX THE PROBLEM AND SHE IS GONE. THANKS AGAIN MATT Trouble codes: U1016 (Comunication lost).
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2003 Chevrolet Impala 3.4L Battery Drain VIN: 2G1WF52E43
FIXED IT. It turns out the rear view mirrior was the cause. If you took the bulbs out it would cure the problem new bulb the problem came back. Replace the mirror with another one from junk yard since a new one was 200 from dealer and the problem is fixed. I g...
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2005 Chevrolet Trailblazer EXT 4.2L Oil VIN: 1GNDT13S15
THANKS FOR ALL THE REPLIES. THIS VEHICLE DOES NOT HAVE A PCV VALVE IT USES A VENTILATION SYSTEM WITH AN ORFICE. I RAN GM PISTON RING CLEANER THROUGH IT AND CHANGED OIL AND TO MY SUPRISE IT ONLY USED 3/4 QUART FOR 3000 MILES. I DONT KNOW IF THESE ENGINES ARE...
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2007 GMC Sierra 2500 HD SLT 6.6L coolant leak VIN: 1GTHK23667
intermittent leak pulled pulled ac bracket saw coolant sepage at cross over pipe gasket. pressurized system could not make leak customer requested we put back together and let him drive. he will return truck when it reoccurs. thank you for all replies will upd...
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2008 GMC Acadia SLE 3.6L Input speed sensor VIN: 1GKER13738
the vehicle went to the dealer to have the transmission rebuilt under after warranty assistance.
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1966 Pontiac Bonneville 6.9L headlamp switch VIN: N0TSUREV6H
I beleive we have figured tis out on our own. The old switch had term 1 and 5 with a jumper buss. the new switch had a jumper buss from term 5 to 3. This caused the ip lamps to stay illuminated even with the headlamp switch in the off position. The correction ...
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