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Prev Professional Automotive Repair Technical Discussions for January 8, 2014
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Open Help Requests for GM
Help Request Answers
2009 Buick Lucerne CX 3.9L No Start, Hesitation, Cuts out, Stall VIN: 1G4HP57M79
This vehicle is making go crazy it intermittent won't start customer go in to store comes out after 5 mins vehicle won't start waits about 5 mins cranks and it will start up sometime he driving down it will cut out. I checked all the fuses scanned for codes no...
1993 Chevrolet Corvette 40th Anniversary Edition 5.7L Excessive Emissions, Hesitation, Surge, Stall, Poor Fuel Economy VIN: 1G1YY23P6P
Vehicle came to us with complaint of sluggish response from a stop and misfires while at cruise speeds. Scan the vehicle no codes were present. Road test the vehicle monitor scan data and found that the low resolution sensor in the distributor was erratic at c...
2002 Chevrolet Impala 3.4L No Start VIN: 2G1WF52E02
car was towed in with a no start i found the battery was bad i replaced the battery.we drove the car about 3 miles cut it off the car has not started sence.i have 59lb fuel presher,i have good fire at the plugs,i had a lock & key co. come in and program the se... Trouble codes: P1189
2006 GMC Yukon Denali 6.0L Ride Control VIN: 1GKEK63U76
Need an opinion the customer wants to know if this is a workable solution or not and what could be the ramifications. They would like us install an aftermarket front and rear shock package and disable the Ride Control. The rear shocks are leaking and pump moto...
2007 GMC Yukon Denali 6.2L stall/ no start VIN: 1GKFK638X7
This truck was towed in for a no start and started when it got here. Customer took it home and in 2 days it stalled on the road and would not restart. Was towed in again and was hard to start like it was flooded. Had to hold gas pedal to the floor to get it ru... Trouble codes: P0011, P0016, P0175
2009 GMC Yukon XL 1500 SLE 5.3L check engine VIN: 1GKEC36019
Thanks for any suggestions you have. I hope some gm techs have seen this. This vehicle recently had an inop fuel pump control module & a u0109 communication lost to fpcm. Sure enough i could not communicate with the fpcm. It was replaced & programmed & it star...
2002 Pontiac Grand Prix SE 3.1L Passkey III VIN: 1G2WK52JX2
Customer called me on one of our coldest days Monday and said his car would start and die, just like the vehicle theft was active. I gave him the procedure for relearn and when that didn't work it was towed in. In the parking lot it would start and die and aft...
2003 Saturn Ion-2 2.2L Starter VIN: 1G8AN1243Z
Friends car came in with new starter battery ignition switch.would not start when cold no crank. Scan bcm had code b2960 and b3033 did as tsb said replace bcm and had flashedwith tech 2,tis web,and laptop. Still will not crank any help would be cool. Ps read a...
2003 Saturn Vue 2.2L No Start VIN: 5GZCZ23D13
Thanks in advance for your help guys! The vehicle came in cranking good, no start. It smelled of raw fuel so I started checking the ignition system. Found spark plug gaps ranged from 0.090-0.100, engine was flooded. I blew out the combustion chambers, through... Trouble codes: P0420 (Catalyst Efficiency Low Bank 1), P1599 (CC Power Management Mode or Engine Stall)
2004 Saturn Ion-2 2.2L Starting VIN: 1G8AJ52F44
THis vehicle was brought to us approxamatly 2 yrs ago and it had an ongoing concern with the ignition switch according to tsb 0408-45-00sd you are supposed to replace the ignition switch . If its never been done before . Ok we did that it was good for about a ...

Fixes & Summaries for GM
Fix/Summary Answers
1990 Cadillac Eldorado 4.5L No Start VIN: 1G6EL1338L
Hello everyone and thanks for the help! We cleaned every ground we could find on the car as a lot of you suggested and the car is fixed. there wasn't a ground that you could point at and say that was the one but they were all kind of ugly
2003 Cadillac CTS 3.2L no crank VIN: 1G6DM57NX3
yes vehical is fixed. chased class2 data line which was down to .1 volt, found air bag control module pulling voltage down after module unplugged voltage returned to 7 volts thanks for replies
2005 Cadillac SRX 4.6L MIL Lamp on VIN: 1GYEE63A95
Hi guys , we found it , it was a break in the wire iat signal , # 1 tan wire , broke about 2 inches from plug on mas air flow , it made easy with all of your help , cant say enough about you guys , what you really do is give a guy confidence , thank you to all... Trouble codes: P0113, P0111.
2003 Chevrolet Tracker 2.0L Mechanical VIN: 2CNBJ13C13
The fix was I need to use a dealer master cylinder. The aftermarkets tried 3 were not working. Put on a dealer and it fixed the problem.
2006 Chevrolet Impala LT 3.9L Poor Idle Quality, Surge, Misfire, MIL Lamp on
In the end I had a lifter lock up and bend a pushrod. Replaced pushrod and lifter and everything was great... For about two weeks. Vehicle came back with another bent pushrod...coincidence? Fixed this pushrod and replaced lifter (on cylinder 1 this time). Vehi... Trouble codes: P0300, P0011, P0016.
1999 GMC K2500 Sierra SLE 6.5L Transmission VIN: 1GTGK29F7X
Thanks to everyone who replied. I took this job off my tech and started all over. I noticed the truck jumps forward when going into drive just as if you are in 4low. I was playing with 4wd shifter and noticed neutral is 2wd and 2wd and 4Hi operate as normal. 4...
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