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Prev Professional Automotive Repair Technical Discussions for December 12, 2012
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1987 Buick grand nation 3.8L Poor Idle Quality, Hesitation, Stall VIN: 1G4GJ1176H
Help. This car is driving me nuts. Customer requested engine and turbo rebuilt. Car ran poorly to begin with.Customer insisted on following through with engine and turbo rebuild.Out came engine.It was sent to Jasper.Turbo to local rebuilder we have had good su...
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2001 Buick Park Avenue 3.8L master cylinder VIN: 1G4CW54K61
Good mourning and thanks for any help. This car came in with left front caliper pins stuck and pads grinding into rotors. I replaced pads rotors and calipers. ( on initial Car test drove with now brake issues except slight grind from lf on braking) After repla...
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2004 Buick Rainier CXL 4.2L Front Axle VIN: 5GADT13S94
This rig bleongs to my boss' wife. It is AWD and there are no codes in the transfer case and the front and rear driveshafts both turn. Problem is that the front end does not work. I looked for an actuator on the front axle but I cannot find one and transfer ca...
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2007 Buick Rendezvous CX 3.5L alternator VIN: ATH0MED0NT
sorry at home didnt have vin. anyhow i havent replaced an alternator on the 3.5 in these yet and according to alldata nothing special about removal. i rolled engine forward all the basics got alt loose and took bracket off no big deal got to replace it anyhow....
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2001 Cadillac DeVille 4.6L no spark VIN: 1G6KD54Y71
replaced running engine new jasper unit new engine never started cranks good no spark check ground wires at engine. check codes found 2 codes for crank sensor b. other code sensor a tested power ground at pcm all ok ck signal from sensors at pcm with snap on m...
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2003 Cadillac Seville SLS 4.6L Starting VIN: 1G6KS54Y33
Car will stall at cruise speed. After pulling over; vehicle will not crank. When this happens, the dash background lighting will not work; but horn and headlights are fine. When you attempt to crank; entire dash goes dark just like no connection at battery, bu...
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2007 Cadillac STS 3.6L Programming ECM VIN: 1G6DW67777
One for you GM dealer guys. Was called in to program a replacement ECM in this '07 STS because I have the Tech 2 and Tis-to-WEB. This vehicle has the push button start. How do you keep power to the ECM to program it. When you push the start button it shuts off...
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1996 Chevrolet Tahoe LS 5.7L No Start VIN: 1GNEK13R8T
This truck came will hard start, it had multiple cylinder misfire. fuel pressure would drop from 55 to zero about 10ps every [...]. Pulled the top intake and found a white spot were the reg was leaking. I replaced the regulator and all 8 injectors. Now i g...
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1998 Chevrolet Blazer 4.3L Four Wheel Drive VIN: 1GNDT13W4W
Hello, my problem today is i have this 1998 chevy blazer come in with the four wheel drive not working. There was no lights at all in the button switch itself. Made sure the fueses were all good and we had power to it. So replaced the selector switch. Still do...
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2000 Chevrolet Blazer LS 4.3L No Spark VIN: 1GNDT13W0Y
Hello i have a 200o blazer with 4.3 vin w... We cant figure out why this truck will not start if the outside temp drops below 37 degrees but if you wait tell the outside temp goes to 39 to 40 degrees the truck will start with out a problem... We have check all...
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2000 Chevrolet Monte Carlo LS 3.4L MIL Lamp on, evap VIN: 2G1WW12E9Y
p0446 replaced 2 vent solenoids, and filler neck now light is back on. Try to turn on vent solenoid to smoke system, computer says too much vaccum. Plugged vapour line and now leak found. Trouble codes: P0446
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2001 Chevrolet S10 4.3L Distributor VIN: 1GCCS19WX1
Hello. This is my personal vehicle. On Dec. 7 I started to notice a noise from the engine compartment. At first I thought it might be an alternator bearing going bad. Further inspection showed the noise was coming from the distributor. When I removed the cap I...
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2001 Chevrolet Venture LS 3.4L Abs VIN: 1GNDX03E31
Well im not to sure were to look on this van, ive checked for codes in the antilock system and found nothing. What seems to happen is that when you start the van and slightly turn the steeering wheel you can feel and hear the abs pump coming on. Has anyone co...
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2009 Chevrolet Uplander 3.9L Mechanical VIN: 1GMDV23169
This customer required rear pads and rotors.We install A/C delco parts and vehicle came back with moaning noise backing up first thing in morning.Customer states this problem has been since rear brake job.Vehicle returned and OEM parts were then installed and ...
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2000 GMC Jimmy SLS 4.3L No Start, Cuts out VIN: 1GKCT18W7Y
This is a plow vehicle. (not plated) Customer complaint, "will not start unless block heater plugged in". Towed in and left outside overnight. Tried to start in AM and cranks normally but not a hint of trying to start. It's snowing and freezing rain outside so...
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2008 Saturn Vue XR 3.6L MIL Lamp on VIN: 3GSDL63738
this vehicle would keep setting code p0017,runs great,no issues there. i ran a quick cleen product in oil for half a day then changed oil. i actuated the cam actuators with snap on scanner, the others clicked,right exhaust did nothing.i replaced that actuator,... Trouble codes: P0017
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Fixes & Summaries for GM
Fix/Summary Answers
1997 Chevrolet Monte Carlo LS 3.1L engine VIN: 2G1WW12M4V
This turned out to be the PCM after all. I replaced the 7x crank sensor and the terminal end at the sensor before replacing the PCM. I should have replaced the entire harness. The new connector splice upped the resistance in the wire causing a slightly lower v...
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2004 Chevrolet Tahoe LS 5.3L Transfer Case Control Module VIN: 1GNEK13Z74
WAS WAITING FOR CUSTOMER TO GET BACK TO ME, THEY TOOK CAR TO DEALER AND DEALER TOLD THEM THE PROBLEM WAS AN IPOD INTERFACE CONNECTED TO RADIO THAT WAS CAUSING THE PROGRAMMING PROBLEM. I NEVER DID GET THE CHANCE TO TRY PROGRAMMING PER ALLEN'S INSTRUCTIONS. ANYW...
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2006 Chevrolet C4500 Kodiak C4C042 6.6L Hvac VIN: 1GBE4C1216
Thanks for the help guys. It looks like I'm going to purchase the manual for this truck, it will be nice to have it anyways. Thanks Dave
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2006 Chevrolet Impala SS 5.3L ses light on VIN: 2G1WD58C56
going to send it to the dealer and will post if the owner lets me know what was found, but did get some helpful info. The emissions 2 fuse does not power the cooling fan motors. It powers the relay control coils of the cooling fan relays 1, 2, & 3. It also f... Trouble codes: P0102, P0480, P0081, P3401.
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2006 Chevrolet Silverado 2500 HD LT 6.6L Excessive Emissions, No Start, Stall VIN: 1GCHK29D36
This is going to a long reply for a fix but everyone please take the time to read it. To give a little background we diagnose with a vertronix master tech, snap on solus pro and a vertronix 5100 lab scope. As you can tell from the information in the post I was...
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