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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for August 22, 2005
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Open Help Requests for GM
Help Request Answers
1999 Cadillac DeVille 4.6L abs VIN: 1G6KD54Y5X
Greetings, Techs. We have a Caddy with an intermittant ABS mil. The owner brought us this car for the lamp. After code retrieval, I have found a C1214 Solenoid Valve Relay Circuit. I have not had the light come on during test drive, and the customer states tha...
1985 Chevrolet Camaro Berlinetta 5.0L start and stall cold VIN: 1G1FP87F2F
vehicle starts up and dies, will start right away again and die, once engine is warm it seems to stay running, on datastream iac counts stay around 145 cold or hot, they may drop down to 90 sometimes. Everything else on datastream seems good: tps, temp, maf. c...
1987 Chevrolet R30 Custom Deluxe 7.4L Excessive Emissions, Poor Fuel Economy VIN: 1GCHR33N7H
after trk is warm if u start to drive the idle will start to increase until u are at approx 35mph.with bdm on veh u can watch the iac motor start to increase slowly until it is wide open.this only happens sometimes not always.return after test drive and cycle ...
1990 Chevrolet Lumina Euro 3.1L engine VIN: 2G1WN54T6L
vehicle will crank but not start, when hot. after it cools, it will start and run until hot.as you can see weve done numerous repairs to this vehicle. after a while they were just shots in the dark. please help!
1995 Chevrolet Lumina LS 3.4L compressor clutch VIN: 2G1WN52X7S
hi guys & thanks in advance anyway car came in scanner is seeing a/c request has a/c pressure 163 on scan say P/S pressure high reads no i even unhooked switch. have power to both pink wires to relay. put power to wire to clutch will engage. went to ecm dark g...
1998 Chevrolet Blazer 4.3L all gages VIN: 1GNCT18W4W
customer reports vehicle will stall with no warning and gages on dash will be inop at same time. gages will not operate again until vehicle starts.no start for 1 min. to 5 min. and then gages work again and vehicle starts and runs fine until it acts up again. ...
1999 Chevrolet Express 3500 5.7L horn VIN: 1GCHG35R2X
can anyone tell me how the steering shaft grounds and where this ground is located at THANK YOU
2000 Chevrolet Malibu 3.1L lacks power VIN: 1G1ND52J3Y
Hello fellow GM techs,I'm a GM guy with a strange one.Thanks in advance for reading this post.Vehicle lacks power at 35 mph up a moderate grade.Hard to describe other than feels just like a plugged up catalytic convertor or late ignition timing?You have to kee...
2001 Chevrolet Tahoe 5.3L Charging VIN: 1GNEK13T51
Customer came in a couple of weeks ago with a weak battery. Charged and tested battery, OK. But we found Alternator ripple too high. Replaced alternator. Customer then complained that the "Battery" telltale comes on intermittently. We checked it out and could ...
2001 Chevrolet Prizm 1.8L MIL Lamp on VIN: 1Y1SK52871
It seems like all of the wierd ones come up at the same time. This one has a lean code. The long-term fuel trim is staying at or above 30% at 65-70 mph. I first inspected the MAF and cleaned a bit of oily crud from it. No difference. I checked the fuel pressur... Trouble codes: P0171 (Fuel System Too Lean)
2003 Chevrolet Impala LS 3.8L Battery VIN: 2G1WH52K93
This car has a big drain on the battery. Seems like something with the radio or On-Star. If we pull the igntion fuse and the radio fuse the draw fades away slowly. I know the igintion switch causes problems in these GM's but can't seem to find a problem with t...
2003 Chevrolet Silverado 1500 5.3L radio VIN: 1GCEK19T53
This pickup has a bose 6 disc cd changer with amp, and is not getting any sound out of the speakers The chimes/warning noise when headlights are on-low fuel-etc does not make any noise either. I checked the amp for power and ground--both were good, plugged in ...
1997 GMC Savana 1500 5.7L 3-4 shift VIN: 1GDFG15R5V
Vehicle shifts fine until 4th. Complete slippage. If manually shift it is better. Leave out of overdrive and no slippage. Any help would be appreciated
1989 Oldsmobile Cutlass Supreme 2.8L Poor Idle Quality, Cuts out, Stall VIN: 1G3WH14W8K
car will not take gas,tried everything but computer. starts up runns rough at first idles but when u press the gas it dies, tried opening throttle plate but had to put it to zero to keep it running, it will run all day even in drive or reverse, just will not t...
2002 Oldsmobile Bravada 4.2L Stall VIN: 1GHDT13SX2
Customer states that after truck sits overnight he can travel approximatly 1/8 of a mile and then when pressing on accelerater pedal nothing happens like the fuel has shut off then the engine dies. He stated that it will restart right away and runs fine after ...
2002 Saturn Vue 2.2L hydraulics VIN: IS6HG5543E
are clutch master cyls a problem on these critters? low to no fluid volume from master cyl line at slave connection( before quick connect) thanx ken

Fixes & Summaries for GM
Fix/Summary Answers
1995 Chevrolet Caprice Classic 4.3L a/c compressor VIN: 1G1BL52WXS
Well the customer didnt want to go to much further with this,after looking at the calibration in the computer it didnt match up with year and model.The car was in a wreck and alot parts were replaced, I think the computer was replaced when the car was put back...
1996 Chevrolet Cavalier LS 2.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G1JF52T6T
Thanks people for all the sugg.After run on 5-gas and power balance test 3 of 4 inj.border line were cleaned previous but didn't help,tore it down and installed 4 new inj. problem solved,thanks for help. darren at advantage auto. Trouble codes: P0300.
1996 Chevrolet K2500 5.7L No Start, Hesitation, Cuts out, Stall VIN: 1GCGK24ROT
It turned out to be the fuel pump connector, it looked okay but we replaced it any way and the customer has had no trouble since, thankyou every one that responded
2001 Chevrolet Blazer LS 4.3L Loss of Coolant VIN: 1GNDT13W11
Everyone responded with the same fix, the intake was the problem. Replaced intake gasket and no more leak, Thanks to all that responded.
2002 Chevrolet Astro 4.3L abs module
sorry for a no fix , but after a while of driving the light went off and now comes on occasionally as it did before.I checked out all the ideas that were forwarded and came to the conclusion the module is bad . customer doesn't want to spend that much yet. tha...
2004 Chevrolet Trailblazer LS 4.2L Misfire VIN: 1GNDS13S74
Hello I have checked all the things that you told me to check and the timing chain was correct and the gears too, I have installed all the things again and took to the dealer, I think it was a electrical problem. Trouble codes: P0016 (Crankshaft Position - Camshaft Position Correlation - Bank 1 Sensor A), P0300 (Random misfire detected), P0301 (Misfire on cyl 1).
1988 Oldsmobile Delta 88 Royale 3.8L Stall VIN: 1G3HN51C81
Tried used injector rail and it now runs perfect.From the replies i got, some of you said that 1 bad injector can kill the engine suddenly by shorting or cancelling the rest out. Thanks to all that replied. MIKE.
1998 Pontiac Sunfire SE 2.4L Excessive Emissions, Cuts out, Stall, MIL Lamp on VIN: 4G2JB32T1W
thanks for all the help- found timing chain tensioner bad causing valve timing to jump around- after changing gears, chain, guides and tensionor- fuel trim came down to -14 LT- did fuel system clean trim came down to -4 LT car runs great again- customer at fir... Trouble codes: P0172, P1133 (O2 counbt B1 Sensor 1 to few).
2000 Pontiac Sunfire SE 2.2L No Start, Cuts out, Stall, MIL Lamp on VIN: 1G2JB1245Y
The communication problem was the lighter was shorted and was always blowing fuses. replaced the lighter. got a crankshaft sensor code, pulled the sensor and checked it against a new one, but the values were the same. cleared the code drove it and it was still...
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