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Prev Professional Automotive Repair Technical Discussions for June 13, 2013
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2000 Buick LeSabre Custom 3.8L windows VIN: 1G4HP54K1Y
there is no communication with any door module except for the drivers door.Tested the simple bus interface and the circuit is open from the drivers door to to any other door.(it is a four door).There is no simple bus schematic on alldata which is the only repa...
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1994 Cadillac Eldorado 4.6L 4th tcc engagment VIN: 1G6EL12Y2R
As I understand it this tranny has a sealed silicon filled torque converter, The code indicates there is a problem with the solenoid engaging, or the wiring to it, Worst case the converter is contaminated with ATF. I'm looking for a fix other than tearing it a...
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1999 Chevrolet Tahoe LS 5.7L No Start VIN: 1GNEK13R7X
help!! Trouble codes: P1336
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2008 Chevrolet Malibu LT 2.4L No Start VIN: 1G1ZJ57B88
Towed in no start. car has start-stall symtom. Add fuel stays running. Unplug cam sensor and car runs. new sensor still start -stall. sensor unplugged, car starts, will stay running when plugged back in.Clear codes while running and stalls and returns to start...
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2008 Chevrolet Colorado WT 3.7L Engine Compression VIN: 1GCDT19E38
Thank you for your help on this one. At first it looked like simple timing chain issue but now that we have the valve cover off, we can see that the cams are lined up when we have the #1 piston at top dead center. We are pulling the front timing cover off righ...
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2001 GMC Sierra 3500 SL 6.6L No Start, Cuts out, Stall VIN: 1GTJK34111
Vehicle came in after friend installed fuel injectors and sleeves. The person that did the work forgot to install the glue on the base of the injector sleeves. I installed the injector sleeves with the glue but did not clamp them down with the injectors right ... Trouble codes: P0463, P0540, U1800 (Lost Comm with FICM)
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2000 Pontiac Grand Am SE 3.4L Misfire, MIL Lamp on, ABS, Trac VIN: 1G2NF52E8Y
Vehicle came in with several issues the first to be dealt with was the intake gaskets, after that was squared away the misfire became more prevalent. So we did a tune up and all is well on that side of it. Heres where it get sticky. When I test drove it sev... Trouble codes: C1226 (RF Wheel Speed Performance), P0300 (Misfire)
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2003 Saturn Vue 2.2L Clutch VIN: 5GZCZ23D13
Slave Cylinder Started Leaking But Trans. Shifted All Gears With No Problems. Replaced Slave With Centric Brand And Have Spent Hours Bleeding (Or Trying To Bleed) This Thing. Done The Vacuum Bleed, Tried The Saturn Procedure Of Pumping Slow Then Pumping Fast T...
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2004 Saturn L300-3 3.0L torque converter VIN: 1G8JL84R94
Looking for some insight on this Saturn. Driving at cruise speed any light lift on the accelerator pedal causes torque converter to kick out and then kick right back in. It shows on the tach as a momentary jump in r.p.m. It seems to do it at any speed as long ...
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2008 Saturn Astra XR 1.8L Mechanical VIN: W08AT67138
The customer wants us to do a timing belt on his car and I am just wondering if you really need all of the specialty tool Mitchel says you need. I've read the instructions and don't see where there is a real have to have tool except for maybe the cam holder (f...
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Fixes & Summaries for GM
Fix/Summary Answers
1994 Chevrolet Cavalier RS 2.2L Poor Idle Quality, Misfire VIN: 1G1JC1442R
This one is fixed! I would like to thank everyone who responded, 34 responses in two days! The culprit was the intake manifold gasket, oddly neither carb spray or propane would change anything, finally hooked up the smoke machine and viola, smoke coming from #...
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1996 GMC C3500 Sierra SL 6.5L Hesitation VIN: 1GTHC33F0T
Long story short, we hounded the manufacturer for another pump and WA LA ! Sometimes it is just a bad re manufactured unit. Problem fixed !!! Trouble codes: 1218 (Injection pump).
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