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Prev Professional Automotive Repair Technical Discussions for August 12, 2013
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Open Help Requests for GM
Help Request Answers
2000 Buick LeSabre Custom 3.8L Starter VIN: 1G4HP54K9Y
Hello everyone, got one here that might be simple. The customer came in complaining of a stall issue and engine cranks over but not starting(one time occurrence). Having not be able to duplicate the condition, she agreed to try installing a crank sensor due to...
2008 Cadillac Escalade 6.2L MIL Lamp on VIN: 1GYFK63888
Hello Fellow Techs. I need help and advise how to get the system variation learn with Tech2 Scanner, I will be appreciate with all help and support. I have been used Tech2 Scanner try few times to get the system variation learn for this Escalade after replace ... Trouble codes: P0315 (Crank position sensor)
1994 Chevrolet Camaro Z28 5.7L No Start, Stall, Intermittent VIN: 2G1FP22P6R
We have lost our butt and now are losing our minds on this one. No good can come from this as the customer is mad as a hornet as we've had this car for 8 weeks. (4 weeks longer than planned). Car was driven in, complaint of engine cutting out at times and ru... Trouble codes: 16 (OPTI-SPARK Ignition Timing System Low Resolution Pulse), 36 (OPTI-SPARK Ign. Timing System Faulty Hi Res. Pulse or Extra Low Res. Pulse detected)
2003 Chevrolet Monte Carlo LS 3.4L Start VIN: 2G1WW12E93
Car came in for intermittent no crank. No current codes. History codes B1440, B2960, B2964, B3128. Have Launch Daigun scan tool. Cranked car numerous times and started every time. did set B2960 back into history one time. Also, seems to be a delayed crank ofte...
2004 Chevrolet Corvette 5.7L ABS Module VIN: 1G1YY32G24
ABS & Traction Lights On. Code C1232 Present. Checked LF Hub. Broken Wire. Replaced Hub. Cleared Code. Started On Test Drive Code C1232 Came Back But Only In History. Clear Code, Recheck Before Moving Car Code Gone. Start Driving Car And Within A Few Feet Ligh...
2006 Chevrolet Colorado LT 3.5L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1GCCS19636
Have a 2006 Chevy Colorado that is in REDUCED POWER mode and we have already changed the throttle body, the ECM, the wiring harness, and have even changed the engine with the update already done to the head and the truck is still showing REDUCED POWER. Code #'... Trouble codes: P0122, P0222
2006 Chevrolet Cobalt LS 2.2L Generator VIN: 1G1AK15F96
replaced generator, replaced PCM, still no 4.5 -5.5v signal from PCM, signal to charge from PCM only 2V and going down, checked wires PCM to generator_OK, also have code P0621
2007 Chevrolet Tahoe LTZ 5.3L Calipers VIN: 1GNFK13047
Hey all, Got this Tahoe in for a braking problem. The issue is the brakes lock up after 10 min of driving. After the ten minutes, a wait for a tow truck, and a tow, the car will literally drive off the flatbed. So after it cools down, the brakes are no longer...
2007 Chevrolet Suburban 1500 LS 5.3L A/C Air Temp Out Left Vents VIN: 1GNFC16067
I got this vehicle because the other shop only does maintenance service to a/c systems. I recovered 2.43 lbs. Freon & it holds 3.0 lbs. for the front & rear system. Rechecked the system on medium hi fan speed, recerulate, both temperature controls to full cold...
1997 GMC Jimmy SL 4.3L Fuel Gauge VIN: 1GKDT13W4V
This one has me scratching my head, guys and gals: This is one where the customer installed an alternator, on a Thursday, it got towed here on a Monday, after it quit charging, again. Diagnostics led to a failed Alternator. I replaced failed alternator with a...
2002 GMC Sierra 2500 HD SL 6.6L compressor VIN: 1GTHK23162
I have not come encountered this before, hopefully someone has some insight. The customer concern is that the A/C system will stop working intermittently. We have been able to duplicate this one time only. During our initial inspection we noted that the A/C sy...
2007 GMC Sierra 1500 SLT 5.3L Accessories VIN: 2GTEK19J97
hey guys 07 sierra fuel gaugeeads empty all times the crazy thing is the low fuel ligh goes on when u first start it i have a code for fuel level sensor i installed one same thing any suggestions would help
2005 Pontiac Grand Prix GTP 3.8L engine VIN: 2G2WR52455
on cold start up engine surges and runs rich. after a minute or two runs fine. fuel trims are still a little rich but not nothing the computer cant compinsate for. it eventually sets a p0068 map/mass corrilation code.cleaned throttle body replaced mass airflow...

Fixes & Summaries for GM
Fix/Summary Answers
1999 Chevrolet Astro 4.3L Excessive Emissions VIN: 1GCDM19W2X
Thanks all of you guys.The next day after I ask for help customer pick up the car.I have no more information .Thanks again.
2006 GMC C5500 Topkick C5U042 6.6L Hesitation, MIL Lamp on VIN: 1GDE5C3256
well I got the truck while it was doing it and I just happen to look at the balance rates cylinder 2 and 5 were 3.2-3.8 so I chanced 2 fuel injectors so far the truck has been running its route for 2 days and all is well man this truck was a disaster I couldn'... Trouble codes: P0087.
2008 GMC Acadia SLT 3.6L Excessive Emissions, No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on, raw fuel into exhaus
vehicle towed out of here it was towed to our sister shop as manager sent it up to other shop felt i was too busy. I was going to swap injectors front to rar to see if misfire went from #2 to #1. the tech at other shop put 6 injectors in it. fised is what he s... Trouble codes: 87 (89 -), 89 (154 -), 154 (191 -), 191 (302 -), 302 (304 - bank 2 306 too and 300), 304 (bank 2 306 too and 300).
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