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Prev Professional Automotive Repair Technical Discussions for June 10, 2011
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Open Help Requests for GM
Help Request Answers
2000 Chevrolet Impala 3.8L Poor Idle Quality VIN: 2G1WH55R3Y
Engine intermittently stalls "immediately" after first starting and has to be restarted. Engine does not seem to have idle flare up on startup. Initial idle speed is approx 900 rpm. Other cars flare to 1200-1500rpm. Changed IAC motor, has new MAF sensor. Teste...
2003 Chevrolet Venture LS 3.4L runs good VIN: 1GNDU23E83
Hello everyone and thanks for all your help. I have this 03 venture at idle makes a buzzing sound coming from the fuel return line goes away when you accelerate or when you disconnect the fuel pressure regulator has anyone run into this problem before. I have ...
2005 Chevrolet Trailblazer EXT LT 5.3L displacement on demand VIN: 1GNET16M45
Displacement on Demand system seems to be stuck ON. Misfiring on cylinders 1, 4, 6, and 7, these cylinders not contributing to engine power. Customer came in for a lot of work but was running fine. We replaced spark plugs due to mileage, rear pads and rotors, ...
2006 Chevrolet Equinox LT 3.4L Abs VIN: 2CNDL73F36
The problem with this vehicle is that in very slow speed when stopping the ABS is activated. When scan test was performed no fault codes were found, and while driving with the scanner on no erratic wheel speed changes were showed. Vehicle with 180000 Kms, we r...
1991 GMC R3500 7.4L Excessive Emissions VIN: 1GTHR33N3M
Truck runs well , fails emissions at idle . With scanner installed and monitoring, perform 2500 rpm test for 30 sec ok, return to idle stays in closed loop for 15 sec then goes open . O2 sensor at .890 fixed system co goes to 2.39 and fails test . I have check...
2000 Pontiac Sunfire SE 2.2L Cuts out VIN: 1G2JB1247Y
Hi I have this 2000 Pontiac Sunfire That came in with a crank sensor error. The car will start and idle fine but when you give it any gas it will stall and set the crank sensor error.The customer put new plugs, wires, coils, and an ignition module on it and ha... Trouble codes: P0336
2007 Pontiac Montana SV6 3.9L cruise control VIN: 1GMDU03187
van has no cruise control switch or option can it be added factory or aftermarket
2005 Saturn Ion-1 2.2L MIL Lamp on VIN: 1G8AF52F55
Hi, The car came in with mil on.Many codes were present.I cleared the codes and one code would come on,PO102-MAF sensor A circuit frequency low.After replacing the MAF sensor and clearing code,mil comes back on shortly after restarting engine,with the same cod... Trouble codes: P0102

Fixes & Summaries for GM
Fix/Summary Answers
1998 Buick LeSabre Custom 3.8L drum brakes
Thanks to all who replied. Disassembled rear brakes and found big {U} shaped retaing spring came out of the front right rear brake shoe. Re adjusted as per the suggestions recieved. Test drove no noise and brake pedal feels normal. I was shocked at how fast th...
1990 Cadillac Seville 4.5L booster VIN: 1G6KS5339L
This one is fixed. The relay contacts where bad so cleaned them on the wiring side and replaced the relay. As far as bleeding the system just allowed the pump to run and blead the brakes normally.
2003 Cadillac CTS 3.2L No Start, Poor Idle Quality VIN: 1G6DM57N63
thanks to all for the information we have received, we tested the fuel pressure and saw that it was slowly dropping so we decided to pinch off our fuel lines and see if it would drop, thus indicating a leaking injector. Once tested we found out the injectors w...
2007 Cadillac DTS L 4.6L brake lights VIN: 1GEEH06Y67
hello ..well since i couldnt get solus pro to access bcm..i took it to the dealer.they sed bcm was fine and it was a short in back of coach..avinash was was rear switches in back coming apart under carpet...thanks to all who responded...
2000 Chevrolet Express 3500 7.4L Misfire, MIL Lamp on VIN: 1GBJG31J9Y
Well I finally decided to remove the cylinder head well there is was #1 cylinder piston was setting down about 1/8 of an inch engine must of hydrolocked to bent the rod. Two machine shops said that the lower ends are strong and that would probably not be the p... Trouble codes: P0300.
2006 Chevrolet Silverado 1500 LS 4.8L Compressor VIN: 2GCEC13V26
finally got it!!! you guys were right it was a wiring issue. Special thanks to Ron, the harness from the pressure sensor runs between the oil pan and trans cooler lines, right in there they bend them to a 90 degree, if you just look at the loom they look norma...
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