GM Automotive Technicians Technical Discussion and Fixes for Jun 21, 2012 - iATN (Members Only)

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Open Help Requests for GM

	Help Request	Answers
	1994 Chevrolet Camaro 3.4L No Start VIN: 2G1FP22S6R I have this 1994 Camaro that we are swapping in a LT1. Everything is hooked up. All connectors hooked up. The thing basically will not start. about every 20th time you crank it it fires up and runs great until you cut it off to re start. then no start. I'm not... Trouble codes: 82 (Shift Sel. A Circuit), 43 (ESC Module Circuit), 41 (EST Open)	View
	1995 Chevrolet Impala SS 5.7L Starting VIN: 1G1BL52P0S a customer of mine has had this car a for a little over a year. i had to tow it in becuase it woulnt start. it has two problems. at times when you turn the key off the engine will remain running and it seems like shutting the door makes it die but thats not fo...	View
	1999 Chevrolet S10 LS 2.2L Charging VIN: 1GCCS1942X i have this s-10 charging system issue. it seems weird how it comes about when it decides to act up. here goes:start the truck cold and drive anywhere,starts normal and charges fine.shut off let it sit for a bit.restart and it cranks long and starts like its l...	View
	2000 Chevrolet Astro 4.3L Cuts out VIN: 1GNDM19WXY sorry for the length of this post. I have a very severe tip in miss/stumble, seems worse hot, but does it cold but not as much. when the stumble/miss happens the engine run time in the pcm resets to zero. I have sat on all power and grounds to pcm with meter a...	View
	2003 Chevrolet Impala 3.4L compressor VIN: 2G1WF52EX3 there is no power to the compressor at all.also the scanner shows,no a/c command,when the a/c button is push in the dash, the button light up, but a/c does not engage,I checked the pressure switch there is 5 volts, also noticed that fans are not coming on,if I...	View
	2004 Chevrolet Blazer LS 4.3L transmission shift cold VIN: 1GNDT13X84 hey fellow techs need your help on this one as on related history only this time its when the trans is hot it has longer shifts and it will not have 4th gear and when the ses lamp comes on and sets the p1810 the trans shifts prefectly. the scan tool the switch...	View
	2006 Chevrolet Impala LTZ 3.9L Compressor VIN: 2G1WU581X6 Customer has been battling an interm. AC problem. The cooling fans don't cut on when the AC is requested on. I can manually use my Tech 2 to turn them on all speeds with no problems. Swapped relays and no change. The pressures do not change when fans are cut o...	View
	2006 Chevrolet Impala LS 3.5L No Start VIN: 2G1WB55K76 When car first came in it had misfire codes and MAP sensor code. Tune-up was done with a/c delco parts and new MAP. Started car and ran great even on road test. Called customer to pick up. Customer came and drove the car about a mile and it died and would not ...	View
	1991 GMC K2500 Sierra SLE 5.7L transmission VIN: 2GTGK29KSM Hello fellow Techs, This customer runs a weed spray service out of his truck. While he sprays he puts the truck in 4 lo. While he is in 4 lo the transmission will not up shift. We replace the input and output speed sensors, but did not fix the problem. Is ther...	View
	1957 Oldsmobile Golden Rocket 88 6.1L Mechanical VIN: 577M401620 Mid 70s Olds 455 with lightly lumpy hydraulic cam,tri power intake with Holly 2300 type mechanical style carbs that owner says were marine listings. Starts and runs very well on center carb but bogs when end carbs open. Will actually kill engine unless you hav...	View
	2002 Oldsmobile Intrigue GX 3.5L System Flow VIN: 1G3WH52H12 I think that is all. Thanks Howie	View
	2004 Oldsmobile Alero GL 3.4L Burns Oil VIN: 1G3NL52E44 Has anyone else had a problem with a warped intake manifold causing excessive oil consumption? If so did you replace it with new? Thanks. Pete	View
	2000 Saturn SL2 1.9L compressor VIN: 1G8ZK5274Y hi to every one. I have this 00 saturn 1.9L that customer came in woth an a/c not working at all. afther inspectioning the vehicle found that the compressorw as leaking so we recomended to replace the compressor first and re check. afther the reman compressor ...	View
	2008 Saturn Aura XE 2.4L Fan 1 VIN: 1G8ZS57B78 I have this Aura that gets hot in traffic. Customer comes in and I find that the cooling fan for the drivers side fan isn't turning on. Fuses good, relays (all three) are working and I can observe the voltages dropping per the mitchell instructions. I can turn...	View

Fixes & Summaries for GM

	Fix/Summary	Answers
	2001 GMC Sierra 1500 SL 5.3L No Start, Cuts out, Stall VIN: 2GTEK19T21 Ended up taken this truck to the dealer, they spent 4 days trying to figure this one out. Two of the days was with GM tech. found the PCM to be bad. Replaced PCM and reflashed, vehicle running fine now Thanks for everyones help	10
	2001 Oldsmobile Intrigue GX 3.5L engine cooling system VIN: 1G3WH52H31 ok did more testing found if i open air bleed on top of raditor when it starts over heating it will start cooling again till it gets more air in system so i am very positive we have ahead gsk leak will have to test with a combustion leak tester Thanks for all...	12
	1961 Pontiac Star Chief 6.4L Hesitation Sorry it has taken me a while to get back to you all, all very good things to check, have done much work on older vehicles in the past and had done most of those checks already. I was concerned about the surface between the ports on the intake ports mostly, si...	39
	1994 Pontiac Firebird Formula 5.7L Srs VIN: 2G2FV22P6R Thanks to Richard and Clifford from the great state of Texas for sending the code 62 info I needed to solve this problem.After checking connections A2 and B2 on the DERM module for poor connections and also for opens in circuits 650 and 39B which we found no i...	6
	2001 Pontiac Grand Am GT 3.4L Surge, Cuts out, Misfire VIN: 1G2NW12E11 We did not get the car fixed, we have another car of the same type and we took all parts off the good running car. car runs OK as long as under a lite load but jerks under a lite decel. We replaced the MAP,TPS,ICM,MAF, PCM,EGR,all coils and wires and plugs, Ch...	13
	2003 Pontiac Bonneville SE 3.8L vibration and leaks VIN: 1G2HX52K13 Well, it is fixed. We replaced both axles again with new EMPI shafts. I had given up on new aftermarket because of other issues but this one is fixed and at a reasonable price thanks to these new shafts. The problem is indeed the fit of the splines at the t...	10

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