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Prev Professional Automotive Repair Technical Discussions for February 15, 2010
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Open Help Requests for GM
Help Request Answers
1992 Chevrolet Lumina 3.1L Cuts out, Stall, MIL Lamp on VIN: 2G1WL54TXN
this car idles fine when driveing after about a mile when comeing to a stop it will run out of fuel cut out but it will start rite up and go guys i thinking its the ecm on this on the fuel pump is getting power but when been driven after a mile or so lose of f... Trouble codes: 54 (fuel pump voltage low)
1996 Chevrolet Camaro Z28 5.7L abs / asr VIN: 2G1FP22P3T
Hey guys thanks in advance for taking the time to think about my issue. With car running abs and asr(acceleration slip regulation or "traction control") lights are on, no codes. All related fuses and relays have been tested and are good, asr switch on-off sign...
2002 Chevrolet Tracker 2.0L Steering VIN: 2SWUW11AX3
Hi Folks I have no power steering assist and have no way to test the power steering pressure. I really don't want to buy a expensive pressure tester for this one job. Any suggestions?
2002 Chevrolet Trailblazer LT 4.2L Charging VIN: IGNDT13S72
this tralblazer came in for dead battery. found altenator not charging, install new altenator everything tested out good. customer came back a year later and nocharge replaced altenator again and was good again. customer call and siad the guage when started fi...
1998 GMC Savana 3500 6.5L No Start, Stall VIN: 1GTHG35FDW
Good afternoon,I have a 1998 GMC savana van 6.5 diesel with an intermitten stall problem.When the truck is cold it will start right up after glow plug light goes out and run for aprox 5 min and cut right off like you turned off the key,then will not start righ...
2003 GMC Sierra 1500 4.8L Extended cranking VIN: 1GTEC19V73
One for you Goodwrenches out there.Extended crank and P0342 code. I have 12v on the reference wire, a good ground, and 0v on signal wire at cam sensor with it unplugged. Good continuity from pcm to cam sensor on all 3 wires. According to Mitchell there should ... Trouble codes: P0342 (Cam sensor signal low)
2007 Saturn Ion-2 2.2L Reduced power mode VIN: 1G8AJ55FX7
TAC system keeps setting P2138 with a reduced voltage on APP1. With a new APP and system working we were able to record a scope pattern that shows APP1 almost always double the APP2 voltage. When it fails, sets code, and is in power reduction mode, the APP1 st... Trouble codes: P2138 (APP 1-2 correlation)

Fixes & Summaries for GM
Fix/Summary Answers
2003 Cadillac CTS 3.2L oil pressure VIN: 1G6DM57N73
Thank all that have replied on this vehicle. Seems like i was trying to fix this motor with just a quick fix. After all the diagnosing and the replies i have recieved the only conclusion i must assume is bearing clearance. The motor when ran out of oil because...
1998 Chevrolet Blazer LS 4.3L Poor Idle Quality, Misfire, Poor Fuel Economy VIN: 1GNBT13W6W
Thanks to all. Chris thanks for the schematic. Wires were good from PCM to DLC. A burned wire to 02 sensor helped the idle. The customer requested to stop work. This ones going back to the auction.
2001 Chevrolet Blazer LT 4.3L Heater VIN: 1GNDT13W91
Once again, thanks to all that replied. Many have discussed the blend door breaking on these Blazers. Also ,the possibility of the system being air locked due to improper filling methods, as well as poor electrical connections etc. The possiblity of air leakin...
2004 Chevrolet Impala 3.8L master cyl VIN: 1151512145
ok after diagnosing this vehicle myself and not being able to perform the work due to me being off another guy at the shop completed the work and called me saying the pedal was very low and problem was not solved. today after looking over all his work and driv...
2005 Chevrolet Impala 3.8L Poor Idle Quality VIN: 2G1WH52K35
This customer decided to " Get Rid Of It". As several suggested on this one, we checked exhaust backpressure, no problem found, removed upper intake plenum to check for a melted port around the EGR tube no problem found. The customer denied any further checkin...
2006 Chevrolet Impala LT 3.5L engine oil low / add oil message VIN: 2G1WT55K06
There must have been some sort of timer as Tony from FL suggested. As I stated in the update, the light was off the next day and has not come back on. Thank again for all your help.
2007 Chevrolet Impala LT 3.5L Transmission VIN: 2G1WT58K17
Ok All, Most of you said dif blew up and not to make full stop turns. One tech said he looked in to this problem and no fix just repair when it brakes. I got the car back from gm dealer today. They even covered towing under warranty. Now for what went wrong? T...
1997 Pontiac Grand Am SE 2.4L Cooling Systems VIN: 1G2NW52T1V
Thanks for the many replies. This ended up being two issues. As many of you suggested, bleeding this cooling system with a vacuum lift set-up is almost mandatory. After doing so, no more overheating problem. As for the 'No Heat' - customer neglected to tell me...
1999 Pontiac Grand Am SE 3.4L Mechanical VIN: 1G2NE12E2X
Hello all, sorry about the late closing, I just forgot to do it. Many folks suggested a problem with the PCV system or vacuum in the crankcase, but these were OK. Several techs suggested a compression test which I did. Found 150# on all cylinders except #2 ...
2006 Pontiac Grand Prix GT 3.8L Unknown VIN: 2G2WP52264
First off thanks to everyone who replied, and also this was a '04 not a '06 as I had posted. I luckily had a '05 Grand Prix show up so I was able to confirm that GM just leaves the connector laying atop the transaxle with nothing to plug into on a non VES syst...
2006 Saturn Ion-2 2.2L Stall, Misfire VIN: 1G8AN15F86
Well, Neil called me out on throwing parts at it. I had no choice because the customer needed her car soon and she lived 40 miles away. She ended up taking a work truck home and was more understanding than I thought she would be. I got on it the next day with ... Trouble codes: P0300.
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