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Prev Professional Automotive Repair Technical Discussions for October 15, 2009
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Open Help Requests for GM
Help Request Answers
1986 Chevrolet K5 Blazer Custom 6.2L no glow plug relay a VIN: 1G8ED18J7G
hello everybody, what we have is an 86 diesel blazer (military version)that has no glow plug relay activation, wait to start light is working, all glow plugs ohm at approx 2 ohms and thermal switch is at .5 ohms (i believe spec to be under 1 ohm untill 125 deg...
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1994 Chevrolet Corvette 5.7L Coolant temp sensor VIN: 1G1YY22P2R
This Car cam in with overheating issue and Service light. Pulled codes and got #15 Temp coolant sensor high voltage. We replaced the sensor light went out for a while than came back in with over heat still an issue. Found plastic bag wrap'd around primary fan...
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1994 Chevrolet K2500 5.7L Hesitation, Cuts out, Misfire VIN: 1GCFK24K38
this truck will stumble tipping in off idle and hardly pull itself down the road.trim was 145+ before the intake reseal lt 160. The only way this truck runs 1/2 right with the base timing set at 8 before.doesn't run to bad wot.Sometimes it will stall dropping ...
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1998 Chevrolet C1500 Silverado 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCEK19R3W
Hello all you gm guys out there. I will start by saying I am not a gm guy. I own an import (german) repair shop. I am working on this truck for a friend. The vehicle came with a terrible misfire. All the ignition system looked old and worn. replaced Plugs,wire... Trouble codes: P0300, P0155, P0161 (o2 sensor heater circuit b2s1), P0442 (evap system small leak detected), P1345 (crank/cam sensor correlation cyl discrimination signal)
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2000 Chevrolet Astro 4.3L power steering VIN: 1GBDM19WXX
customer called p/s and brakes died while backing into her trailer to hook up. veh. towed in. replaced p/s pump, filled system with bg p/s fluid. turned steering wheel with vehicle on lift, eng off, to get big bubbles out. then used factory procedure with eng ...
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2001 Chevrolet Venture LS 3.4L Starting VIN: IGNDXO3E21
hi technicians,i have this chevrolet venture,3.4 motor,problem is when i want to star the car,i do not recive signal to the starter,the purple wire,icheck relay no signal goes ,i check neutral swith,maybe ignition swith.batery is good,starter new.thanks for th...
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2003 Chevrolet Avalanche 1500 5.3L transfer case VIN: 3GNEK13T43
hello:i have this avalance which has the auto transfer case in it and my experiance with this unit is limited.when it is in any 4wd drive mode you can only go about 4-5 mph and it shakes the whole truck and you can hear and feel front tires grabing and squeeli...
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2001 GMC Savana 2500 5.0L Misfire, MIL Lamp on VIN: 1GTFG25M11
Cyl 4 had the bulk of the missfires cyl 2 had the second most and there were several missfires on 3 and 7. I noticed the cyl 7 missfires seemed to increase on decel. Trouble codes: P0300, P1381
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1997 Oldsmobile Achieva S 2.4L No Start, passlock VIN: 1G3NL52T6V
Has anyone come across this and do you know what make it return to the ref voltage reading? I don't know if I should send the IPC back to repair or if I'm way off base and it's a commuication problem between thew PCM and the IPC Trouble codes: P1629, P1601 (loss of serial communicationdoesnt set all the time)
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2000 Pontiac Grand Prix GTP 3.8L Stall VIN: 1G2WR121XY
This car is becoming the bane of my existence :-) About three weeks ago, I towed the car in for stall/would crank but not restart. Had spark, cmp signal, all that, but fuel pressure was only 35 PSI, should be 55-60, so that's the fix, right? Well, it seems th... Trouble codes: P101
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2002 Pontiac Grand Am SE 2.2L engine VIN: 1G2NE52FO2
hello, we have this grand-am that won't start for the customer but when it gets towed in it starts for us. there is no codes, and we have fuel pressure. sounds like a crank sensor but this, a 2.2 ecotec and we can't seem to find it. does anyone know where it i...
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2005 Pontiac Grand Am SE 2.2L theft alarm VIN: 1G2NE52F75
alarm sets at times and car will not start. when reprograhm passlock will start and run for few days and then will not start
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2000 Saturn SC2 1.9L engine VIN: 1G8ZY1272Y
This car came in on a wrecker with a dead battery. Customer said he went to start the car in the AM and the car was dead- no lights on instruments, no crank, etc. Battery was dead so we charged the battery almost all day yesterday. Once the battery was charged...
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Fixes & Summaries for GM
Fix/Summary Answers
1998 Cadillac DeVille 4.6L No Start, Stall VIN: 1G6KD54YXW
This is a first for me, Believe it or not, we found a spark plug wire jumping voltage into the blower motor. Replaced and rerouted the wire and car starts, runs and drives. The only explanation I have is that voltage was spiking the heater control head, which ... Trouble codes: U1255.
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1977 Chevrolet G20 Beauville 5.7L Mechanical VIN: CGL267U227
sorry it took so long . i had to track down a used combination valve. Replaced valve and bled and all is well
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1995 Chevrolet Impala SS 5.7L crank hub VIN: 1G1BL52P3S
at some point the customer had upgraded the engine in this vehicle from an lt1 to a LT4 purchased from gm as a crate engine at the time the origional balancer was installed we replaced with proper balancer for that motor and all is straight and good thank u al...
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2001 Chevrolet Cavalier LS 2.4L Surge VIN: 1G1JF52T01
Thanks everyone for all the help. So far we have smoked the intake, checked the cam timing, among so many other little things. We are just going to fool around with it over the [...], and hopefully we find something wrong in the wiring, as thats what the cu... Trouble codes: C1275.
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2002 Chevrolet Impala 3.4L Starting VIN: 2G1WF55EX2
Thanks to all the great replies.It turned out to be the ign switch.This guy is a truck driver so i had a hard time to get it back.This time when the gas gauge was not working we were able to wiggle ign switch and gas gauge started working.This was our first go...
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2003 Chevrolet Trailblazer LS 4.2L Hesitation, Low power VIN: 1GNET16S53
Well Ladies in Gentleman, this one is fixed!Well I asked the tech to inspect the throttle body, and the response was" The other shop already did that!" Well I asked again only to find that throttle body had not been serviced, and tit was filthy. A BG service h...
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2003 Chevrolet Impala 3.4L Stall VIN: 2G1WF52E73
Thanks for all the help from everybody it was the ignition switch,replaced problem went away thanks again
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2004 Chevrolet Silverado 1500 5.3L Speed calibration after axle ratio change
I called the dealer back and asked if they could reset the front wheel sensors to match the taller tires. They said that they could do that and also reset for the axle ratio. When I took it in the tech had trouble with the 4.56 axle ratio (not offered by GM), ...
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1988 Oldsmobile Cutlass Ciera 2.8L No Start VIN: 2G3AJ51W5J
thanks for all the replies...i ended up replacing 3 injectors even thou they ohmed out to be good...must have been plugged...started up and ran fine thanks for all the help
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1997 Oldsmobile Achieva S 2.4L MIL Lamp on VIN: 1G3NL52T9V
THANKS FOR ALL THE RESPONSE. AFTER TRYING WITH THE MODIS AGAIN WITH NO LUCK, I TOOK THE CAR TO A FREIND OF MINE THAT HAD A TECH 2 SCANNER. THE TECH 2 RELEARNED WITH NO PROBLEM. CODE CLEARED AND DID NOT RETURN. THANKS AGAIN Trouble codes: P1336.
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