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Professional Automotive Repair Technical Discussions for January 12, 2004 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1985 Buick Skylark Limited 2.8L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1G4XC69W5F Hi techs,this car came into shop with check engine light on (code 35 maf voltage high and 45 rich exhaust)check out maf sensor found to be bad, it would increase pulse width to 9.0 at idle and run real rich.Replace maf sensor with new ac delco part, now car ru... Trouble codes: 44 (lean exhaust always) |
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| 1997 Buick Park Avenue 3.8L PCV Vent VIN: 1G4CW52K4V I am trying to check the crankcase press/vac to help diagnos oil consumption. The PCV is under the map sensor but where is the fresh air vent for the system? Both valve covers are sealed. |
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| 1997 Cadillac Catera 3.0L blower stays on with key off VIN: W06VR52R6V This is the 1st one of these I've worked on. The blower motor stays running when the key is shut off. I know with the older models the blower controler was the cause . aldata leads me to believe this controler is part of the blower moter. has anyone run into t... |
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| 1997 Cadillac DeVille 4.6L Lifters VIN: 1G6KD54Y1V This 1997 Deville (Northstar) originally came in with head gaskets leaking coolant into the oil. It was disassembled, heads checked (ok) and new head gaskets put in. It came back with cust complaining of intermittant noisy lifters. If the engine is run until w... |
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| 1998 Cadillac Seville STS 4.6L No Start, Stall VIN: 1G6KY5494W Hello everyone. I have a 98 seville that will stall at times and will not start for customer at times. We have not been able to experience problem yet. It has a code 1376 with two history recordings. The first recording had a low ref voltage of 1.8 volts. We c... Trouble codes: P1376 |
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| 1987 Chevrolet R10 Custom Deluxe 5.7L Stall VIN: 1GCER14K7H the engine dies when put into reverse but starts up again & will go as long as you apply gas & sometimes dies at stop lights ,idle quality is worst when cold.this is a nagging problem for my customer any info. will be appreciated thank you. |
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| 1990 Chevrolet C1500 Cheyenne 5.7L a/c control head VIN: 1GCDC14K3L vehicle came in with control head flashing and temp works, mode doors work, tried 2 control heads checked all my wiring 1 by 1 of course checked the freon level, there is no tape on any of the wiring harness underneath the dash. i am stuck i have worked on thi... |
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| 1994 Chevrolet K1500 5.7L Mechanical VIN: 20CEC19KR1 This truck had the intake gasket changed, after that the motor cut out, idle bad, hesitates and some backfiring. Engine runs hot up to 240. After we replaced the egr it idle good but hesitates on acceleration and will occasionally backfire. |
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| 1996 Chevrolet S10 2.2L No Start, Poor Idle Quality, Stall, MIL Lamp on VIN: 1GCCS1445T Hi all this truck came in on the hook with a no start. I was able to start it and it barely runs with wide open throttle wont rev past idle. replaced plugs due to fuel fouled black and sooty also replaced map sensor still wont hardly run cleared code and repla... Trouble codes: P0108 |
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| 1997 Chevrolet Monte Carlo LS 3.1L convertor cycles of and on @ 70 MPH VIN: 2G1WW12M7V This car has been interesting and very difficult to get to the bottom of. The problem is that the convertor is not locking up at all untill 70 mph. Then it turns on-of-on-of-on...It wont even stay aplied for 2 sec. I can see the pcm commanding the trans conver... |
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| 1997 Chevrolet Cavalier 2.2L no-start VIN: 3G1JC1243V GOOD DAY,I have a 97 cavalier 2.2l engine that will not run because the vtm keeps shutting down the fuel system.I have tried the on for 10 minute off,on for 10 minute off,on for 10 minute and then try to start and this car will not respond.Does any body know i... |
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| 1999 Chevrolet Blazer 4.3L lights VIN: 1GNDT13W3X the voltage on this blazer will drop to 12.1 volts at 800 rpm with headlights,blower on high,then it will come back to 14.1 volts in a second,this seems abnormal to me.i found this gm bulletin 02-06-03-008 about the way the alt charges,but i don't think thats ... |
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| 2001 Chevrolet Workhorse 6.5L Engine VIN: 5B4KP42Y21 This is a Postal vehicle. The problem is very intermittent. The truck has had this problem since it was new. Please don't immediately suggest taking this truck to a dealer. We don't always have the best luck there. After the vehicle is fully warmed up and the ... |
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| 2002 Chevrolet Impala 3.4L cruise motor VIN: 2G1WF52E72 In extremely cold conditions, the customer complains that the cruise (throttle) sticks on. Under 10 deg f. If she hits the brake, the cruise light goes out, but the engine rpms stay up. It is not cold enough to duplicate the problem. I do not know if the crui... |
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| 1992 Oldsmobile Toronado 3.8L guages, etc. VIN: 1G3E213L3N Hello and thanks in advance. This 92 olds upon start up has no instrumentation,dash lights, or climate control. After the car has been driven awhile it starts to work. Upon working the message center states electrical problem. While the dash is dead it still r... |
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| 1993 Oldsmobile Cutlass Supreme S 3.1L No Start VIN: 1G3WH54T4P This Olds is driving the shop crazy. Came in on the hook. Customer says it stalled while driving down the highway and would not start back up. When the truck showed up to get the car it started long enough to move it into position an stalled again. We have not... |
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| 1999 Oldsmobile Silhouette Premiere 3.4L cooling system VIN: 1GHDX03E2X hi every one. hope every one had a good christmas & a happy new year. need some g.m. help. strange one to start the year off!!! customer bought vehicle recently from individual. customer noted vehicle using minor ammount of coolant on long trip. brought vehicl... |
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| 2001 Oldsmobile Silhouette Premiere 3.4L Poor Idle Quality, Stall VIN: 1GHDX13E81 Hi All, Last week I put upper and lower intake gaskets on this vehicle as they were both leaking coolant. Used GM gasket set with the updated crush sleeves. All went well until I went to start it. It would not start unless I applied very little pressure on the... |
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| 1992 Pontiac Grand Am SE 2.3L Cuts out, Stall VIN: 1G2NE1432N Hi gang I need some help. Got this 92 Grand Am that cuts out with no warning after it has been driven about 10-15 miles. After a cool down period of 15-30 minutes it will restart and go again for another 10-15 miles. Have checked fuel pressure, replaced fuel f... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1990 Buick Riviera Luxury 3.8L steering VIN: 1G4EZ13C6L I was overwhelmed with the number of replies to my email(29 in all). Dave [...] gets the trophy for his Alldata online service bulletin that addressed a left lead or pull to the left on 90-92 Buick Rivieras. The bulletin directed us to place shims(4mm to 12mm... |
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| 1996 Buick Century Custom 3.1L MIL Lamp on, code p0134 VIN: IG4AG53MXT Hello, were considering this vehicle fixed. Its been one month since it was last in the shop, and the light hasn't come on again. What we did is removed the MAF sensor, sprayed it down with carb cleaner (even though it looked reasonably clean)and reinstalled i... Trouble codes: P0134 (Insufficient activity sensor 1). |
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| 1996 Chevrolet Blazer 4.3L No shift VIN: 1GNDT13W4T Hello All...I received 22 replies, and found all of them to be helpful and educational. Jerry from Virginia hit the nail on the head in the first reply I received. Problem was a faulty 3-2 solonoid which was putting the system in 'limp home' mode. (NOTE: If yo... |
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| 1996 GMC K2500 Sierra SL 5.7L rear brakes VIN: 1GTGK24R3T The fix on this truck was to counter sink the brake drum mounting holes so they would fit over the stud shoulder that protrudes from the axle. Special thanks to Martin [...] who suggested this. this truck has never needed rear brakes and this problem just appe... |
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| 1997 Oldsmobile Regency 3.8L heating system VIN: 1G3HC52K3W Thanks to those who took time to help me, David from texas and Carl from Ohio hit it on this one, both said the blend door actuator. The other common response was programmer, which I suspected. However I now have something to offer, I watched the actuators and... |
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| 1997 Pontiac Bonneville SE 3.8L No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on, Tach acts funny VIN: 1G2HX52K9V Okay guys the customer is making a decision. So far the PCM seems like the most likely cause. Thanks. Responses were for PCM fixing it and a Cam sensor fixing it. Trouble codes: P0336 (Loss of 18X signal at PCM). |
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| 2000 Pontiac Grand Am GT 3.4L 2-3 shift VIN: 1G2NW52E3Y After checking further it was determined to be an internal transmission problem. Customer opted to go with a Jasper remanufactured unit. After installation, the trans worked fine. GM sure came up with a dumb way to ch fluid level. You have to drive car, then r... |
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