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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 3, 2007
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Open Help Requests for GM
Help Request Answers
1995 Buick LeSabre Custom 3.8L tail lamps headlights VIN: 1G4HP52L6S
help headlamps and parking lites are not working i think it may be the lamp control module but i cannot find it. has anyone ever replaced one of these? i appreciate any help i can get.
1995 Buick Skylark Custom 2.3L parasitic draw VIN: 1G4NV15D0S
i have this buick with a 2.7 amp draw. even with all the fuses and relays pulled out. there are 6 or 7 fusible links in one eyelet at the starter solinoid and if i remove them, the draw drops to 0. alldata is not the greatest in terms of wiring diagrams so, ha...
1998 Cadillac DeVille 4.6L Starting VIN: 1G6KD54YOW
hello thanks for your help. this is the first time i have used this. so sorry. i have helped people on here. i have this 98 deville drove into shop. This car had no dash cluster lights and no display. i hooked up scanner no comunication. took dash cluster apar...
1999 Cadillac Seville SLS 4.6L heating & ac system VIN: 1G6KS54Y9X
after control head and actuators were installed the heat & ac worked fine for two weeks... but now the same problem is back... please help...
1985 Chevrolet K10 Scottsdale 5.7L hydraulic VIN: 1GCEK14H7F
on this 4x4 chevy, customer's complaint is a brake pull to the right. after test driving, just calling it a pull does not do it justice. on moderate braking, it pulls to the right. on hard braking, it will snatch you into the ditch. we check all brakes. calipe...
1994 Chevrolet Camaro Z28 5.7L MIL Lamp on VIN: 2G1FP22P5R
Happy New Year. What a start we are having. I have this 1994 Camaro that SES light is on. Problem started when owner wired fans direct and burnt a fuse link to the ignition which stalled the engine when it burnt into. I have check the codes after repair to the... Trouble codes: 43 (knock sensor)
1995 Chevrolet K1500 Cheyenne 5.7L Hesitation, Surge, Cuts out, Poor Fuel Economy VIN: 1GCEK19KXS
This 95 Chevy has me stumped. First thought was the map sensor. Readings were all over. Apparently just because the engine is surging so badly. No 02 reading. New sensor helped, but not much. The fuel filter was horrible. Replaced of course. This vehicle idles...
1997 Chevrolet Camaro 3.8L Fuel Guage VIN: 2G1FP32K9V
Vehicle came in no start, fuel tank full. No fuel pump operation. Removed fuel, removed fuel tank, replaced module with OE AC Delco, reassembled system, vehicle runs well. Customer complains now of moving fuel guage needle upon braking and acceleration, verifi...
1997 Chevrolet P-van 6.3L Noise VIN: 1GBKP32Y1V
Noise coming from timing housing, a grinding noise at idle. Pronounced with oil cap off. Loud ticking noise under acceleration. Any ideas before I start removing parts would be appreciated. steve
1999 Chevrolet K1500 Suburban 5.7L No Start VIN: 3GNFK16R9X
Truck was towed into shop for no-start.I verified spark at cylinder no#1.When i turn the KOEO i hear the fuel pump relay working as well as 2 seconds after i turn the key off. I have 65 psi of fuel pressure at the rail and it holds after you shut the vehicle o...
2001 Chevrolet Astro 4.3L No Start VIN: 1GCDM19W81
This Astro Van has had repeated distributor cap failures over the last 60k miles. At 40k the distributor failed and was replaced. Since that time the distributor caps have been failing every 8 to 10k (you know the usual crossfire problem in these things) We've...
2001 Chevrolet Impala LS 3.8L Surge, Misfire, MIL Lamp on VIN: 2G1WH55K31
Hello my name is Justin and im trying to pinpoint a driveability problem in a 2001 Impala. The car came to me with a surging problem on light accel. On the scanner cylinders 1246 would clock up on the missfire data during the surging, it seems to be running a ... Trouble codes: P0204
2002 Chevrolet Venture LS 3.4L whistle VIN: 1GNDV13E92
Hi people, I have this high pitch whistle like a vacuum leak. Test road with customer and could hear it from drivers seat and only with window down. When coasting at about 35 mph and just slight pressure on throttle. Noise goes away if you push harder or let ...
2002 Chevrolet Venture LS 3.4L cooling fans VIN: 12EWGYNU12
van overheats fan comes on only on low speed disconnect coolant sensor fan comes on can also activate fan with modis found only 2 volts at sensor and computer what am i missing
1988 GMC S15 2.5L No start VIN: 5698741236
Hey guys i have a problem. I have an 88 S15 that wont start or stay running. I have checked the gas routing and fuel filter and the fuel pump and the single injector. It all appears to be in good shape. The problem is i can start it by pooring gas down through...
1996 GMC K2500 Sierra SL 5.7L Air/fule metering system VIN: 1GTGK24R1T
This ones for all you GM guys. We have a 96 1500 pickup with a 350. Complaint is a high idle when warmed-up (above 1600 rpm) and poor shifting when warm. We have varified this only once, when it sat over night in our lot. We keep getting throttle poss. sensor ...
2001 GMC Sierra 1500 SL 4.8L Poor Idle Quality, Misfire VIN: 2GTEC19V51
This one came in with a rough unstable idle complaint... I checked it when it came in and had a P0171 and P0174 lean codes... sprayed carb cleaner around looking for a vacum leak and noticed my long term seemed to change when I soaked the intake runner so I tr... Trouble codes: P0171 (Lean Bank 1), P0174 (Lean Bank 2), P0300 (random misfire)
2001 GMC Cab & Chassis Sierra 3500 8.1L Drive indicator VIN: 1GDJC34G81
OK guys. I have another weird GM problem. Customer brought us this vehicle with a very intemittent concern. They stated that it only happens at highway speeds. We drove it 55 miles with no problem. Then moving it in the parking lot it happened once. The "d" li...
2001 GMC Yukon XL 1500 SLT 5.3L Misfire VIN: 3GKFK16T81
vehicle came in originally with P0300, P0171, P0174, found open plug wires and 5lbs of backpressure in exhaust, replaced above componenets ran great, now has P0300, only misfires on cold start until you reach about 130 degrees misfire goes away, pressure dropp... Trouble codes: P0300 (random misfire)
1993 Pontiac Grand Am SE 2.3L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 1G2NE1430P
Vehicle runs very rough, have codes for map and iat. Replaced map with known good, no difference, iat shows current ambient temp at cold start. Codes seem unrelated to problem, someone had been working on it at home before it was brought to me. Vehicle running... Trouble codes: 23 (iat circuit low), 34 (map circuit low)
1993 Pontiac Grand Am SE 2.3L ignition VIN: 1G2NE5431P
replacing crank sensor. took bolt out twisted sensor and pulled up and part of sensor still in block. is there a easy way to get it out with out taking oil pan off?
1997 Pontiac Grand Prix GT 3.8L low coolant light VIN: 1G2WP12K7V
This vehicle came to my shop with low coolant light on. I unpluged senser the light went out. I replaced the senser but the light still comes on until you unplug it. The thing i notice is that it stays on until you unplug it but when you plug back in it does n...
1999 Pontiac Grand Am GT 3.4L MIL Lamp on VIN: 1G2NW52E2X
this car came in 1 month ago with code p0341. after checking it out it came up as intermittant. now it is back with the same code but it resets every time it is cleared. after going through the flow chart four times, i keep coming up being told to replace the ... Trouble codes: P0341

Fixes & Summaries for GM
Fix/Summary Answers
1997 Cadillac DeVille 4.6L Digital Cluster Illumination VIN: 1GKD54Y9VU
Thanks to all that gave input on this vehicle. I removed the cluster and checked all connections and verified the required power feeds and grounds. All checked good so I ordered an exchange unit from the local dealer. I instslled it yesterday and all seems fin...
2005 Chevrolet Trailblazer LS 4.2L engine tick VIN: 1GNDT13S55
Thanks to everyone that replied. After pulling the cam cover I found an oil gallery plug in the front of the head between the two camshafts pushed out of the head. GM has a PI out on this saying that a rare occasions this plug will become dislodge causing mult...
2000 Pontiac Montana 3.4L intake manifold VIN: 1GMDX03EOY
Well this vehicle is fixed and back on the road again. I want to thank the many who responded to my help request. I was pleasantly surprised by how fast the responses came in. The majority of you said to do only the intake gaskets since that could cause all of...
2004 Pontiac Grand Prix GTP 3.8L Blower Runs -Key Off VIN: 2G2WR524X4
Thanks for all the input guys. The car has not returned as yet... called owner, all working well. If/when it returns I plan to replace blower motor (OEM). Will post more later. All the Best JB
1998 Saturn SL2 1.9L reverse & 2nd gear VIN: 1G8ZK5277W
this is a long time customer of mine and i almost sent him for a trans. i figured i'd try tighteningthe nut first since he said he had no trouble till all of a sudden and he brought it right to me. i cleaned the threads with 2+2 took a hammer and chisel to the...
2002 Saturn L300 3.0L Misfire VIN: 1G8JW54R32
Fixed, thanks to all that replied for your time, Ray of California was spot on. FYI-- each engine bank has a coil pack of 3 coils. packs are molded together( ind coils can't be swapped) and each side is different and can't be swapped. New coil pack from Saturn... Trouble codes: P, 0301 (miafire 1 cylinder).
2002 Saturn Vue 2.2L bcm issue VIN: 5GZCZ23D82
We ended up taking the vehicle to Saturn dealer. They tried programming the second BCM,it could not be programmed. Saturn installed another BCM and via their web based program they were successful. We suspect there may be a software issue. We just installed ou...
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