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Prev Professional Automotive Repair Technical Discussions for August 21, 2009
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Open Help Requests for GM
Help Request Answers
1993 Buick Park Avenue 3.8L Stall VIN: 1G4CW52L6R
The car runs great, cranks great, good fuel pressure, no codes but when you drive it it stalls almost every time you come to a stop. I unplugged the lockup solenoid and it still stalls out. there are no codes and other than the stall the car runs perfect, no c...
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2004 Buick Century Custom 3.1L a/c VIN: 2G4WS52J14
After changing the battery in this car we have lost power to the a/c controler. The question is I was told it was from a power surge, ie from changing tne battery. As anyone delt with this on GM'S before. With auto climate control. If yes do you know how or wh...
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1990 Cadillac DeVille 4.5L No Start, Stall VIN: 1G6CD53321
This car came in on the truck yesterday for a no start. Customer is from out of town and needs car asap. Test's showed ign. module faulty, no spark. Replaced, vehicle started and ran perfect, with no MIL. Shut the car down and put the air cleaner back togeth...
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1978 Chevrolet K20 Custom Deluxe 5.7L Poor Idle Quality, Hesitation VIN: CKL248Z165
This truck idles beautifully in park and neutral, but when thrown in gear it bogs down and idles really rough. It also seems to hesitate for a second when giving it gas unless you ease on the pedal more slowly. It has an edelbrock carb and I have tried adjust...
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1986 Chevrolet Corvette 5.7L coolant water p VIN: 1G1YY078IG
HELLO PLEASE DON'T KILL ME FOR THE QUESTION i am working on changing the water pump on an 86 vette and the instructions on alldata are clear remove top bracket bolts ,lower mounting bolt and pull bracket forward and remove upper bracket bolt and than compresso...
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1994 Chevrolet S10 4.3L Hesitation, Stall, Misfire VIN: 1GCCT14W3R
motor starts to suge and stalls we loss communtion to computer start motor up it runs 1500 rpms and is stuck in 2gear till you shut key off then you can talk to the computer and will not save codes we have all power and grounds are good thank you for your time Trouble codes: 0000 (when it stalls we loss data cant talk to computer)
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1994 Chevrolet S10 Blazer 4.3L No Start VIN: 1JSBDLEH12
Got my mother-in laws Blazer here with a no start. I have a no fuel pressure, and my fuel pump relay isnt working. I swapped the plug from the relay next to it on the fire wall and the relay comes on. My question is where does the relay get its power from. I d...
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2001 Chevrolet Suburban 1500 LT 5.3L Mechanical VIN: 3GNEC16T91
cooling for a/c system is good if the a/c belt will stay on pulley or if does not brake tensioner,as engine rpm rises with a/c on,belt tensioner racthes back and fouth,and is very noise,i have replace three differant belts and tensioiner,,revacuate and charged...
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2004 Chevrolet Silverado 2500 HD LS 6.6L no low end power VIN: 1GCHK29224
Truck makes no power untill about 2200rpm then powers up well. No codes,no cel, no boost leaks, fuel pressure is right on the money. Prior owner had a tuner on it and removed it prior to us gettin the truck. It has a magnaflow cat back exhaust and intake tube ...
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2006 Chevrolet Cobalt SS 2.4L cruise control VIN: 1G1AM15B26
thanks in advance for any help offered. this cruise control will not work on this vehicle and the tech2 will not maintain communicaton although another generic scan tool will keep communications. all of the available data on solus scanner is functioning but th...
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2001 GMC Yukon XL 1500 SLT 5.3L No Start VIN: 33GKFK16T4
Truck is a tow in, no start. Try starting acts like, a pass-lock problem. Code 1626 stored in PCM memory. At this time, I am unable to communicate with BCM, the keyless remote is inop, as is the door chime, the secuity light is on solid. I prepare to pin test ... Trouble codes: P1626 (Anti-theft fuel enable circuit)
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1995 Oldsmobile 88 Royale 3.8L Interior Lights VIN: 1G3HN52K8S
Hello All, I'm having a problem with a short in the electrical system for the interior light circuit. It keeps blowing the 6A fuse. It appears to have a direct short but sometimes and without rhyme or reason, that I can tell, the short goes away. I have ins...
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1994 Pontiac Grand Am SE 3.1L Misfire VIN: 1GZNE55M0R
Hi guys, I've got a real stumper here. 94 grand am comes in skipping bad. #2 completely dead. Customer has installed wires,plugs,injectorsand intake gaskets. Checked compression, switched plug, wire and coil pack, skip stays on #2 has very strong spark. Found ...
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2001 Pontiac Aztek 3.4L Surge VIN: 3G7DA03E21
Hi all, We have this Aztek that will intermitently go cruising all by itself. Customer complaint is that it sometimes idles at 50 MPH. She pulls off the road and shuts it off. Sometimes it returns to normal and sometimes it continues to race. She no longer wan...
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2007 Saturn Ion-2 2.2L MIL Lamp on VIN: 1G8AJ55F47
This car came to us with an intermittent ses light. Tested with Tech 2. P1174 code. Flow chart testing was inconclusive. Smoke test of intake and MAF ducting revealed 1 displaced rubber boot at the air horn of the throttle body. Reinstalled the boot. Ran it on... Trouble codes: P1174 (Fuel Trim Cylinder Balance)
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Fixes & Summaries for GM
Fix/Summary Answers
2004 Buick Rendezvous CX 3.4L No Start VIN: 3G5DA03E34
I started to disconnect one module at a time. I was not having any luck until I disconnected the on star module and started to talk to the scaner. car started and runs good thanks to everyone who responded to my request.
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1993 Chevrolet Camaro 3.4L abs VIN: 2G1FP22S9P
I had to wait for car to return for further diagnosis. The tests that were mentioned were ran by me except loading harness with a light, After doing that, i made up a wiring harness and ran it direct to sensor and problem remained...abs ecm was replaced and p...
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1996 Chevrolet K1500 Silverado 5.7L Steering VIN: 2GCEK19R1T
THE PRESSURE REGULATOR WAS STUCK IN THE PUMP. I TESTED THE RETURN FLOW AND NOTICED THAT THERE WAS NO RETURN WHEN THE PROBLEM OCCURED. I THEN TOOK THE FITTING OFF THE BACK AND NOTICED THE REGULATOR WAS STUCK DOWN IN THE BORE. I THEN FREED UP THE VALVE AND ALL W...
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2002 Chevrolet Tahoe LT 5.3L MIL Lamp on VIN: 1GNEK13202
I THINK WE GOT THIS ONE NAILED. THE FIX I CAME UP WITH WAS TO REPLACE THE VENT VALVE AND THE VAPOR CANISTER CLEAN OUT ALL THE LINES WITH WATER AND COMPRESSED AIR. THEN TO CONTROL THE DIRT I USED 1/2IN. GATES HEATER HOSE (14FT WORTH)RAN THAT FROM VENT VALVE (I... Trouble codes: P0446 (evap vent control problem).
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2002 Oldsmobile Intrigue GL 3.5L Poor Fuel Economy, poor performance VIN: IG3WH52H52
Yes the Cat was the problem thanks to everyone who responded. David thanks for the information on a tool to check exhaust back pressure. Enjoy the day, Terry Trouble codes: 101 (MAF Sensor system performance), 300 (Engine Misfire detected), 404 (EGR open system performance), 420 (CAT. system low effiency).
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